The Most Metal-poor Stars in the Magellanic Clouds Are r-process Enhanced*

Reggiani, Henrique; Schlaufman, Kevin C.; Casey, Andrew R.; Simon, Joshua D.; Ji, Alexander P.

doi:10.3847/1538-3881/ac1f9a

The Most Metal-poor Stars in the Magellanic Clouds Are r-process Enhanced*

Journal Article · Fri Nov 05 00:00:00 EDT 2021 · The Astronomical Journal

DOI:https://doi.org/10.3847/1538-3881/ac1f9a· OSTI ID:1983147

^[1]; ^[2]; ^[3]; ^[4]; ^[5]

Johns Hopkins Univ., Baltimore, MD (United States); Carnegie Observatories, Pasadena, CA (United States)
Johns Hopkins Univ., Baltimore, MD (United States); Flatiron Institute, New York, NY (United States)
Monash Univ., Melbourne, VIC (Australia); ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D), Canberra, ACT (Australia)
Carnegie Observatories, Pasadena, CA (United States)
Carnegie Observatories, Pasadena, CA (United States); Univ. of Chicago, IL (United States); Sloan Digital Sky Survey (SDSS), et al.

The chemical abundances of a galaxy’s metal-poor stellar population can be used to investigate the earliest stages of its formation and chemical evolution. The Magellanic Clouds are the most massive of the Milky Way’s satellite galaxies and are thought to have evolved in isolation until their recent accretion by the Milky Way. Unlike the Milky Way’s less massive satellites, little is known about the Magellanic Clouds’ metal-poor stars. We have used the mid-infrared metal-poor star selection of Schlaufman & Casey and archival data to target nine LMC and four SMC giants for high-resolution Magellan/MIKE spectroscopy. These nine LMC giants with -2.4 ≲ [Fe/H] ≲ -1.5 and four SMC giants with -2.6 ≲ [Fe/H] ≲ -2.0 are the most metal-poor stars in the Magellanic Clouds yet subject to a comprehensive abundance analysis. While we find that at constant metallicity these stars are similar to Milky Way stars in their α, light, and iron-peak elemental abundances, both the LMC and SMC are enhanced relative to the Milky Way in the r-process element europium. These abundance offsets are highly significant, equivalent to 3.9σ for the LMC, 2.7σ for the SMC, and 5.0σ for the complete Magellanic Cloud sample. We propose that the r-process enhancement of the Magellanic Clouds’ metal-poor stellar population is a result of the Magellanic Clouds’ isolated chemical evolution and long history of accretion from the cosmic web combined with r-process nucleosynthesis on a timescale longer than the core-collapse supernova timescale but shorter than or comparable to the thermonuclear (i.e., Type Ia) supernova timescale.

View Accepted Manuscript (DOE)

Research Organization:: US Department of Energy (USDOE), Washington, DC (United States). Office of Science, Sloan Digital Sky Survey (SDSS)

Sponsoring Organization:: USDOE

Contributing Organization:: Sloan Digital Sky Survey (SDSS)

OSTI ID:: 1983147

Journal Information:: The Astronomical Journal, Journal Name: The Astronomical Journal Journal Issue: 6 Vol. 162; ISSN 0004-6256

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: United States

Language:: English

References (178)

The chemical composition of the Small Magellanic Cloud Mucciarelli, A. Astronomische Nachrichten, Vol. 335, Issue 1 https://doi.org/10.1002/asna.201312006	journal	January 2014
Estimating regression models with unknown break-points Muggeo, Vito M. R. Statistics in Medicine, Vol. 22, Issue 19 https://doi.org/10.1002/sim.1545	journal	January 2003
The mass of our Milky Way Wang, WenTing; Han, JiaXin; Cautun, Marius Science China Physics, Mechanics & Astronomy, Vol. 63, Issue 10 https://doi.org/10.1007/s11433-019-1541-6	journal	May 2020
The ESA Gaia Archive: Data Release 1 Salgado, J.; González-Núñez, J.; Gutiérrez-Sánchez, R. Astronomy and Computing, Vol. 21 https://doi.org/10.1016/j.ascom.2017.08.002	journal	October 2017
Nucleosynthesis yields of core-collapse supernovae and hypernovae, and galactic chemical evolution Nomoto, Ken'ichi; Tominaga, Nozomu; Umeda, Hideyuki Nuclear Physics A, Vol. 777 https://doi.org/10.1016/j.nuclphysa.2006.05.008	journal	October 2006
Atomic Data for Stellar Nucleosynthesis Sneden, Christopher; Lawler, James E.; Den Hartog, Elizabeth A. Proceedings of the International Astronomical Union, Vol. 11, Issue A29A https://doi.org/10.1017/S1743921316003069	journal	August 2015
SkyMapper Southern Survey: Second data release (DR2) Onken, Christopher A.; Wolf, Christian; Bessell, Michael S. Publications of the Astronomical Society of Australia, Vol. 36 https://doi.org/10.1017/pasa.2019.27	journal	January 2019
R-process enrichment from a single event in an ancient dwarf galaxy Ji, Alexander P.; Frebel, Anna; Chiti, Anirudh Nature, Vol. 531, Issue 7596 https://doi.org/10.1038/nature17425	journal	March 2016
Abundance of live 244Pu in deep-sea reservoirs on Earth points to rarity of actinide nucleosynthesis Wallner, A.; Faestermann, T.; Feige, J. Nature Communications, Vol. 6, Issue 1 https://doi.org/10.1038/ncomms6956	journal	January 2015
Short-lived 244Pu points to compact binary mergers as sites for heavy r-process nucleosynthesis Hotokezaka, Kenta; Piran, Tsvi; Paul, Michael Nature Physics, Vol. 11, Issue 12 https://doi.org/10.1038/nphys3574	journal	December 2015
A distance to the Large Magellanic Cloud that is precise to one per cent Pietrzyński, G.; Graczyk, D.; Gallenne, A. Nature, Vol. 567, Issue 7747 https://doi.org/10.1038/s41586-019-0999-4	journal	March 2019
A nearby neutron-star merger explains the actinide abundances in the early Solar System Bartos, Imre; Marka, Szabolcs Nature, Vol. 569, Issue 7754 https://doi.org/10.1038/s41586-019-1113-7	journal	May 2019
Collapsars as a major source of r-process elements Siegel, Daniel M.; Barnes, Jennifer; Metzger, Brian D. Nature, Vol. 569, Issue 7755 https://doi.org/10.1038/s41586-019-1136-0	journal	May 2019
SciPy 1.0: fundamental algorithms for scientific computing in Python Virtanen, Pauli; Gommers, Ralf; Oliphant, Travis E. Nature Methods https://doi.org/10.1038/s41592-019-0686-2	journal	February 2020
The effects of photoionization on galaxy formation - I. Model and results at z =0 Benson, A. J.; Lacey, C. G.; Baugh, C. M. Monthly Notices of the Royal Astronomical Society, Vol. 333, Issue 1 https://doi.org/10.1046/j.1365-8711.2002.05387.x	journal	June 2002
The effects of photoionization on galaxy formation - II. Satellite galaxies in the Local Group Benson, A. J.; Frenk, C. S.; Lacey, C. G. Monthly Notices of the Royal Astronomical Society, Vol. 333, Issue 1 https://doi.org/10.1046/j.1365-8711.2002.05388.x	journal	June 2002
Virial shocks in galactic haloes? Birnboim, Yuval; Dekel, Avishai Monthly Notices of the Royal Astronomical Society, Vol. 345, Issue 1 https://doi.org/10.1046/j.1365-8711.2003.06955.x	journal	October 2003
Chromium: NLTE abundances in metal-poor stars and nucleosynthesis in the Galaxy Bergemann, M.; Cescutti, G. Astronomy & Astrophysics, Vol. 522 https://doi.org/10.1051/0004-6361/201014250	journal	October 2010
Non-LTE calculations for neutral Na in late-type stars using improved atomic data Lind, K.; Asplund, M.; Barklem, P. S. Astronomy & Astrophysics, Vol. 528 https://doi.org/10.1051/0004-6361/201016095	journal	March 2011
Chemical abundances in LMC stellar populations: II. The bar sample⋆⋆⋆⋆⋆⋆ Van der Swaelmen, M.; Hill, V.; Primas, F. Astronomy & Astrophysics, Vol. 560 https://doi.org/10.1051/0004-6361/201321109	journal	December 2013
Astropy: A community Python package for astronomy Robitaille, Thomas P.; Tollerud, Erik J.; Greenfield, Perry Astronomy & Astrophysics, Vol. 558 https://doi.org/10.1051/0004-6361/201322068	journal	September 2013
Determining stellar atmospheric parameters and chemical abundances of FGK stars with iSpec Blanco-Cuaresma, S.; Soubiran, C.; Heiter, U. Astronomy & Astrophysics, Vol. 569 https://doi.org/10.1051/0004-6361/201423945	journal	September 2014
The Solar Twin Planet Search: I. Fundamental parameters of the stellar sample⋆ Ramírez, I.; Meléndez, J.; Bean, J. Astronomy & Astrophysics, Vol. 572 https://doi.org/10.1051/0004-6361/201424244	journal	November 2014
Mg line formation in late-type stellar atmospheres: II. Calculations in a grid of 1D models⋆ Osorio, Y.; Barklem, P. S. Astronomy & Astrophysics, Vol. 586 https://doi.org/10.1051/0004-6361/201526958	journal	February 2016
The Gaia mission Prusti, T.; de Bruijne, J. H. J.; Brown, A. G. A. Astronomy & Astrophysics, Vol. 595 https://doi.org/10.1051/0004-6361/201629272	journal	November 2016
Constraining cosmic scatter in the Galactic halo through a differential analysis of metal-poor stars Reggiani, Henrique; Meléndez, Jorge; Kobayashi, Chiaki Astronomy & Astrophysics, Vol. 608 https://doi.org/10.1051/0004-6361/201730750	journal	December 2017
Gaia Data Release 2 : Kinematics of globular clusters and dwarf galaxies around the Milky Way★ Helmi, A.; van Leeuwen, F.; McMillan, P. J. Astronomy & Astrophysics, Vol. 616 https://doi.org/10.1051/0004-6361/201832698	journal	August 2018
Gaia Data Release 2 : The astrometric solution Lindegren, L.; Hernández, J.; Bombrun, A. Astronomy & Astrophysics, Vol. 616 https://doi.org/10.1051/0004-6361/201832727	journal	August 2018
Gaia Data Release 2 : Using Luri, X.; Brown, A. G. A.; Sarro, L. M. Astronomy & Astrophysics, Vol. 616 https://doi.org/10.1051/0004-6361/201832964	journal	August 2018
Gaia Data Release 2 : Catalogue validation Arenou, F.; Luri, X.; Babusiaux, C. Astronomy & Astrophysics, Vol. 616 https://doi.org/10.1051/0004-6361/201833234	journal	August 2018
Gaia DR2 proper motions of dwarf galaxies within 420 kpc : Orbits, Milky Way mass, tidal influences, planar alignments, and group infall Fritz, T. K.; Battaglia, G.; Pawlowski, M. S. Astronomy & Astrophysics, Vol. 619 https://doi.org/10.1051/0004-6361/201833343	journal	November 2018
Non-LTE analysis of K I in late-type stars Reggiani, Henrique; Amarsi, Anish M.; Lind, Karin Astronomy & Astrophysics, Vol. 627 https://doi.org/10.1051/0004-6361/201935156	journal	July 2019
Evidence for ≳4 Gyr timescales of neutron star mergers from Galactic archaeology Skúladóttir, Á.; Salvadori, S. Astronomy & Astrophysics, Vol. 634 https://doi.org/10.1051/0004-6361/201937293	journal	January 2020
Facing problems in the determination of stellar temperatures and gravities: Galactic globular clusters Mucciarelli, A.; Bonifacio, P. Astronomy & Astrophysics, Vol. 640 https://doi.org/10.1051/0004-6361/202037703	journal	August 2020
The GALAH Survey: non-LTE departure coefficients for large spectroscopic surveys Amarsi, A. M.; Lind, K.; Osorio, Y. Astronomy & Astrophysics, Vol. 642 https://doi.org/10.1051/0004-6361/202038650	journal	October 2020
R -process enhancements of Gaia-Enceladus in GALAH DR3 Matsuno, Tadafumi; Hirai, Yutaka; Tarumi, Yuta Astronomy & Astrophysics, Vol. 650 https://doi.org/10.1051/0004-6361/202040227	journal	June 2021
Kinetic equilibrium of iron in the atmospheres of cool stars: III. The ionization equilibrium of selected reference stars Korn, A. J.; Shi, J.; Gehren, T. Astronomy & Astrophysics, Vol. 407, Issue 2 https://doi.org/10.1051/0004-6361:20030907	journal	August 2003
First stars V - Abundance patterns from C to Zn and supernova yields in the early Galaxy Cayrel, R.; Depagne, E.; Spite, M. Astronomy & Astrophysics, Vol. 416, Issue 3 https://doi.org/10.1051/0004-6361:20034074	journal	March 2004
The Hamburg/ESO R-process enhanced star survey (HERES): II. Spectroscopic analysis of the survey sample Barklem, P. S.; Christlieb, N.; Beers, T. C. Astronomy & Astrophysics, Vol. 439, Issue 1 https://doi.org/10.1051/0004-6361:20052967	journal	July 2005
The chemical evolution of barium and europium in the Milky Way Cescutti, G.; François, P.; Matteucci, F. Astronomy & Astrophysics, Vol. 448, Issue 2 https://doi.org/10.1051/0004-6361:20053622	journal	February 2006
Chemical abundances in LMC stellar populations: I. The inner disk sample Pompéia, L.; Hill, V.; Spite, M. Astronomy & Astrophysics, Vol. 480, Issue 2 https://doi.org/10.1051/0004-6361:20064854	journal	January 2008
The VizieR database of astronomical catalogues Ochsenbein, F.; Bauer, P.; Marcout, J. Astronomy and Astrophysics Supplement Series, Vol. 143, Issue 1 https://doi.org/10.1051/aas:2000169	journal	April 2000
The ALADIN interactive sky atlas: A reference tool for identification of astronomical sources Bonnarel, F.; Fernique, P.; Bienaymé, O. Astronomy and Astrophysics Supplement Series, Vol. 143, Issue 1 https://doi.org/10.1051/aas:2000331	journal	April 2000
The SIMBAD astronomical database: The CDS reference database for astronomical objects Wenger, M.; Ochsenbein, F.; Egret, D. Astronomy and Astrophysics Supplement Series, Vol. 143, Issue 1 https://doi.org/10.1051/aas:2000332	journal	April 2000
A Spectroscopic Analysis of 33 of the Most Metal-Poor Stars.I. McWilliam, Andrew; Preston, George W.; Sneden, Christopher The Astronomical Journal, Vol. 109 https://doi.org/10.1086/117485	journal	June 1995
Spectroscopic Analysis of 33 of the Most Metal Poor Stars. II. McWilliam, Andrew; Preston, George W.; Sneden, Christopher The Astronomical Journal, Vol. 109 https://doi.org/10.1086/117486	journal	June 1995
On the Infall of Matter Into Clusters of Galaxies and Some Effects on Their Evolution Gunn, James E.; Gott, J. Richard, III The Astrophysical Journal, Vol. 176 https://doi.org/10.1086/151605	journal	August 1972
Stellar lifetimes and abundance ratios in chemical evolution Tinsley, B. M. The Astrophysical Journal, Vol. 229 https://doi.org/10.1086/157039	journal	May 1979
The evolution of disk galaxies and the origin of S0 galaxies Larson, R. B.; Tinsley, B. M.; Caldwell, C. N. The Astrophysical Journal, Vol. 237 https://doi.org/10.1086/157917	journal	April 1980
Black-hole-neutron-star collisions Lattimer, J. M.; Schramm, D. N. The Astrophysical Journal, Vol. 192 https://doi.org/10.1086/181612	journal	September 1974
The Evolution and Explosion of Massive Stars. II. Explosive Hydrodynamics and Nucleosynthesis Woosley, S. E.; Weaver, Thomas A. The Astrophysical Journal Supplement Series, Vol. 101 https://doi.org/10.1086/192237	journal	November 1995
Barium Abundances in Extremely Metal-poor Stars McWilliam, Andrew The Astronomical Journal, Vol. 115, Issue 4 https://doi.org/10.1086/300289	journal	April 1998
[CLC]Ca[/CLC] [CSC]ii[/CSC] Triplet Spectroscopy of Giants in Small Magellanic Cloud Star Clusters: Abundances, Velocities, and the Age-Metallicity Relation Da Costa, G. S.; Hatzidimitriou, D. The Astronomical Journal, Vol. 115, Issue 5 https://doi.org/10.1086/300340	journal	May 1998
The Evolution of Early‐Type Galaxies in Distant Clusters. II. Internal Kinematics of 55 Galaxies in the \documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \usepackage[OT2,OT1]{fontenc} \newcommand\cyr{ \renewcommand\rmdefault{wncyr} \renewcommand\sfdefault{wncyss} \renewcommand\encodingdefault{OT2} \normalfont \selectfont} \DeclareTextFontCommand{\textcyr}{\cyr} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} \landscape $z=0.33$ \end{document} Cluster Cl 1358+62 Kelson, Daniel D.; Illingworth, Garth D.; van Dokkum, Pieter G. The Astrophysical Journal, Vol. 531, Issue 1 https://doi.org/10.1086/308445	journal	March 2000
Reionization and the Abundance of Galactic Satellites Bullock, James S.; Kravtsov, Andrey V.; Weinberg, David H. The Astrophysical Journal, Vol. 539, Issue 2 https://doi.org/10.1086/309279	journal	August 2000
Color Separation of Galaxy Types in the Sloan Digital Sky Survey Imaging Data Strateva, Iskra; Ivezić, Željko; Knapp, Gillian R. The Astronomical Journal, Vol. 122, Issue 4 https://doi.org/10.1086/323301	journal	October 2001
Can Photoionization Squelching Resolve the Substructure Crisis? Somerville, Rachel S. The Astrophysical Journal, Vol. 572, Issue 1 https://doi.org/10.1086/341444	journal	June 2002
Optimal Techniques in Two‐dimensional Spectroscopy: Background Subtraction for the 21st Century Kelson, Daniel D. Publications of the Astronomical Society of the Pacific, Vol. 115, Issue 808 https://doi.org/10.1086/375502	journal	June 2003
The Broadband Optical Properties of Galaxies with Redshifts 0.02 < z < 0.22 Blanton, Michael R.; Hogg, David W.; Bahcall, Neta A. The Astrophysical Journal, Vol. 594, Issue 1 https://doi.org/10.1086/375528	journal	September 2003
Quantifying the Bimodal Color‐Magnitude Distribution of Galaxies Baldry, Ivan K.; Glazebrook, Karl; Brinkmann, Jon The Astrophysical Journal, Vol. 600, Issue 2 https://doi.org/10.1086/380092	journal	January 2004
The Star Formation History of the Small Magellanic Cloud Harris, Jason; Zaritsky, Dennis The Astronomical Journal, Vol. 127, Issue 3 https://doi.org/10.1086/381953	journal	March 2004
Nucleosynthesis in Outflows from the Inner Regions of Collapsars Pruet, Jason; Thompson, Todd A.; Hoffman, R. D. The Astrophysical Journal, Vol. 606, Issue 2 https://doi.org/10.1086/382036	journal	May 2004
Spectroscopy of Red Giants in the Large Magellanic Cloud Bar: Abundances, Kinematics, and the Age-Metallicity Relation Cole, Andrew A.; Tolstoy, Eline; Gallagher III, John S. The Astronomical Journal, Vol. 129, Issue 3 https://doi.org/10.1086/428007	journal	March 2005
The Two Micron All Sky Survey (2MASS) Skrutskie, M. F.; Cutri, R. M.; Stiening, R. The Astronomical Journal, Vol. 131, Issue 2 https://doi.org/10.1086/498708	journal	February 2006
Supernova Fallback: A Possible Site for the r -Process Fryer, Christopher L.; Herwig, Falk; Hungerford, Aimee The Astrophysical Journal, Vol. 646, Issue 2 https://doi.org/10.1086/507071	journal	July 2006
Spitzer Survey of the Large Magellanic Cloud: Surveying the Agents of a Galaxy?s Evolution (SAGE). I. Overview and Initial Results Meixner, Margaret; Gordon, Karl D.; Indebetouw, Remy The Astronomical Journal, Vol. 132, Issue 6 https://doi.org/10.1086/508185	journal	January 2006
Galactic Chemical Evolution: Carbon through Zinc Kobayashi, Chiaki; Umeda, Hideyuki; Nomoto, Ken’ichi The Astrophysical Journal, Vol. 653, Issue 2 https://doi.org/10.1086/508914	journal	December 2006
Are the Magellanic Clouds on Their First Passage about the Milky Way? Besla, Gurtina; Kallivayalil, Nitya; Hernquist, Lars The Astrophysical Journal, Vol. 668, Issue 2 https://doi.org/10.1086/521385	journal	October 2007
The Chemical Enrichment History of the Large Magellanic Cloud Carrera, R.; Gallart, C.; Hardy, Eduardo The Astronomical Journal, Vol. 135, Issue 3 https://doi.org/10.1088/0004-6256/135/3/836	journal	February 2008
AN ACCURATE AGE DETERMINATION FOR THE SMALL MAGELLANIC CLOUD STAR CLUSTER NGC 121 WITH THE HUBBLE SPACE TELESCOPE /ADVANCED CAMERA FOR SURVEYS Glatt, Katharina; Gallagher, John S.; Grebel, Eva K. The Astronomical Journal, Vol. 135, Issue 4 https://doi.org/10.1088/0004-6256/135/4/1106	journal	February 2008
The star Formation History of the Large Magellanic Cloud Harris, Jason; Zaritsky, Dennis The Astronomical Journal, Vol. 138, Issue 5 https://doi.org/10.1088/0004-6256/138/5/1243	journal	September 2009
The Wide-Field Infrared Survey Explorer (Wise): Mission Description and Initial On-Orbit Performance Wright, Edward L.; Eisenhardt, Peter R. M.; Mainzer, Amy K. The Astronomical Journal, Vol. 140, Issue 6 https://doi.org/10.1088/0004-6256/140/6/1868	journal	November 2010
Zirconium, Barium, Lanthanum, and Europium Abundances in open Clusters Jacobson, Heather R.; Friel, Eileen D. The Astronomical Journal, Vol. 145, Issue 4 https://doi.org/10.1088/0004-6256/145/4/107	journal	March 2013
A Search for Stars of very low Metal Abundance. vi. Detailed Abundances of 313 Metal-Poor Stars Roederer, Ian U.; Preston, George W.; Thompson, Ian B. The Astronomical Journal, Vol. 147, Issue 6 https://doi.org/10.1088/0004-6256/147/6/136	journal	May 2014
MASS AND ENVIRONMENT AS DRIVERS OF GALAXY EVOLUTION IN SDSS AND zCOSMOS AND THE ORIGIN OF THE SCHECHTER FUNCTION Peng, Ying-jie; Lilly, Simon J.; Kovač, Katarina The Astrophysical Journal, Vol. 721, Issue 1 https://doi.org/10.1088/0004-637X/721/1/193	journal	August 2010
Nucleosynthesis and Evolution of Massive Metal-Free Stars Heger, Alexander; Woosley, S. E. The Astrophysical Journal, Vol. 724, Issue 1 https://doi.org/10.1088/0004-637X/724/1/341	journal	November 2010
Multi-Element Abundance Measurements from Medium-Resolution Spectra. iii. Metallicity Distributions of Milky way Dwarf Satellite Galaxies Kirby, Evan N.; Lanfranchi, Gustavo A.; Simon, Joshua D. The Astrophysical Journal, Vol. 727, Issue 2 https://doi.org/10.1088/0004-637X/727/2/78	journal	January 2011
Multi-Element Abundance Measurements from Medium-Resolution Spectra. iv. Alpha Element Distributions in Milky way Satellite Galaxies Kirby, Evan N.; Cohen, Judith. G.; Smith, Graeme H. The Astrophysical Journal, Vol. 727, Issue 2 https://doi.org/10.1088/0004-637X/727/2/79	journal	January 2011
GALAXY STRUCTURE AND MODE OF STAR FORMATION IN THE SFR-MASS PLANE FROM z ∼ 2.5 TO z ∼ 0.1 Wuyts, Stijn; Förster Schreiber, Natascha M.; van der Wel, Arjen The Astrophysical Journal, Vol. 742, Issue 2 https://doi.org/10.1088/0004-637X/742/2/96	journal	November 2011
Neowise Observations of Near-Earth Objects: Preliminary Results Mainzer, A.; Grav, T.; Bauer, J. The Astrophysical Journal, Vol. 743, Issue 2 https://doi.org/10.1088/0004-637X/743/2/156	journal	December 2011
A Stellar mass Threshold for Quenching of Field Galaxies Geha, M.; Blanton, M. R.; Yan, R. The Astrophysical Journal, Vol. 757, Issue 1 https://doi.org/10.1088/0004-637X/757/1/85	journal	September 2012
Chemical Evolution of the Large Magellanic Cloud Bekki, Kenji; Tsujimoto, Takuji The Astrophysical Journal, Vol. 761, Issue 2 https://doi.org/10.1088/0004-637X/761/2/180	journal	December 2012
THIRD-EPOCH MAGELLANIC CLOUD PROPER MOTIONS. I. HUBBLE SPACE TELESCOPE /WFC3 DATA AND ORBIT IMPLICATIONS Kallivayalil, Nitya; van der Marel, Roeland P.; Besla, Gurtina The Astrophysical Journal, Vol. 764, Issue 2 https://doi.org/10.1088/0004-637X/764/2/161	journal	February 2013
The Distribution of Alpha Elements in Ultra-Faint Dwarf Galaxies Vargas, Luis C.; Geha, Marla; Kirby, Evan N. The Astrophysical Journal, Vol. 767, Issue 2 https://doi.org/10.1088/0004-637X/767/2/134	journal	April 2013
Deriving Stellar Effective Temperatures of Metal-Poor Stars with the Excitation Potential Method Frebel, Anna; Casey, Andrew R.; Jacobson, Heather R. The Astrophysical Journal, Vol. 769, Issue 1 https://doi.org/10.1088/0004-637X/769/1/57	journal	May 2013
The Araucaria Project. the Distance to the Small Magellanic Cloud from Late-Type Eclipsing Binaries Graczyk, Dariusz; Pietrzyński, Grzegorz; Thompson, Ian B. The Astrophysical Journal, Vol. 780, Issue 1 https://doi.org/10.1088/0004-637X/780/1/59	journal	December 2013
Third-Epoch Magellanic Cloud Proper Motions. ii. the Large Magellanic Cloud Rotation Field in Three Dimensions van der Marel, Roeland P.; Kallivayalil, Nitya The Astrophysical Journal, Vol. 781, Issue 2 https://doi.org/10.1088/0004-637X/781/2/121	journal	January 2014
THE CARNEGIE-SPITZER-IMACS REDSHIFT SURVEY OF GALAXY EVOLUTION SINCE z = 1.5. I. DESCRIPTION AND METHODOLOGY Kelson, Daniel D.; Williams, Rik J.; Dressler, Alan The Astrophysical Journal, Vol. 783, Issue 2 https://doi.org/10.1088/0004-637X/783/2/110	journal	February 2014
3D-HST+CANDELS: THE EVOLUTION OF THE GALAXY SIZE-MASS DISTRIBUTION SINCE z = 3 van der Wel, A.; Franx, M.; van Dokkum, P. G. The Astrophysical Journal, Vol. 788, Issue 1 https://doi.org/10.1088/0004-637X/788/1/28	journal	May 2014
THE STAR FORMATION HISTORIES OF LOCAL GROUP DWARF GALAXIES. I. HUBBLE SPACE TELESCOPE /WIDE FIELD PLANETARY CAMERA 2 OBSERVATIONS Weisz, Daniel R.; Dolphin, Andrew E.; Skillman, Evan D. The Astrophysical Journal, Vol. 789, Issue 2 https://doi.org/10.1088/0004-637X/789/2/147	journal	June 2014
Ultrafaint Dwarfs—Star Formation and Chemical Evolution in the Smallest Galaxies Webster, David; Sutherland, Ralph; Bland-Hawthorn, Joss The Astrophysical Journal, Vol. 796, Issue 1 https://doi.org/10.1088/0004-637X/796/1/11	journal	October 2014
The Quenching of the Ultra-Faint Dwarf Galaxies in the Reionization era Brown, Thomas M.; Tumlinson, Jason; Geha, Marla The Astrophysical Journal, Vol. 796, Issue 2 https://doi.org/10.1088/0004-637X/796/2/91	journal	November 2014
The best and Brightest Metal-Poor Stars Schlaufman, Kevin C.; Casey, Andrew R. The Astrophysical Journal, Vol. 797, Issue 1 https://doi.org/10.1088/0004-637X/797/1/13	journal	November 2014
THE HISTORY OF R -PROCESS ENRICHMENT IN THE MILKY WAY Shen, Sijing; Cooke, Ryan J.; Ramirez-Ruiz, Enrico The Astrophysical Journal, Vol. 807, Issue 2 https://doi.org/10.1088/0004-637X/807/2/115	journal	July 2015
Ultrafaint Dwarf Galaxies—The Lowest-Mass Relics from Before Reionization Bland-Hawthorn, Joss; Sutherland, Ralph; Webster, David The Astrophysical Journal, Vol. 807, Issue 2 https://doi.org/10.1088/0004-637X/807/2/154	journal	July 2015
High-Resolution Spectroscopic Study of Extremely Metal-Poor star Candidates from the Skymapper Survey Jacobson, Heather R.; Keller, Stefan; Frebel, Anna The Astrophysical Journal, Vol. 807, Issue 2 https://doi.org/10.1088/0004-637X/807/2/171	journal	July 2015
NEW RARE EARTH ELEMENT ABUNDANCE DISTRIBUTIONS FOR THE SUN AND FIVE r -PROCESS-RICH VERY METAL-POOR STARS Sneden, Christopher; Lawler, James E.; Cowan, John J. The Astrophysical Journal Supplement Series, Vol. 182, Issue 1 https://doi.org/10.1088/0067-0049/182/1/80	journal	April 2009
Modules for Experiments in Stellar Astrophysics (Mesa) Paxton, Bill; Bildsten, Lars; Dotter, Aaron The Astrophysical Journal Supplement Series, Vol. 192, Issue 1 https://doi.org/10.1088/0067-0049/192/1/3	journal	December 2010
Modules for Experiments in Stellar Astrophysics (Mesa): Planets, Oscillations, Rotation, and Massive Stars Paxton, Bill; Cantiello, Matteo; Arras, Phil The Astrophysical Journal Supplement Series, Vol. 208, Issue 1 https://doi.org/10.1088/0067-0049/208/1/4	journal	August 2013
Modules for Experiments in Stellar Astrophysics (Mesa): Binaries, Pulsations, and Explosions Paxton, Bill; Marchant, Pablo; Schwab, Josiah The Astrophysical Journal Supplement Series, Vol. 220, Issue 1 https://doi.org/10.1088/0067-0049/220/1/15	journal	September 2015
The Apache Point Observatory Galactic Evolution Experiment (APOGEE) Spectrographs Wilson, J. C.; Hearty, F. R.; Skrutskie, M. F. Publications of the Astronomical Society of the Pacific, Vol. 131, Issue 999 https://doi.org/10.1088/1538-3873/ab0075	journal	March 2019
Simulations of the Magellanic Stream in a First Infall Scenario Besla, G.; Kallivayalil, N.; Hernquist, L. The Astrophysical Journal, Vol. 721, Issue 2 https://doi.org/10.1088/2041-8205/721/2/L97	journal	September 2010
MAGNETOROTATIONALLY DRIVEN SUPERNOVAE AS THE ORIGIN OF EARLY GALAXY r -PROCESS ELEMENTS? Winteler, C.; Käppeli, R.; Perego, A. The Astrophysical Journal, Vol. 750, Issue 1 https://doi.org/10.1088/2041-8205/750/1/L22	journal	April 2012
The Primeval Populations of the Ultra-Faint Dwarf Galaxies Brown, Thomas M.; Tumlinson, Jason; Geha, Marla The Astrophysical Journal, Vol. 753, Issue 1 https://doi.org/10.1088/2041-8205/753/1/L21	journal	June 2012
Star Formation in Ultra-Faint Dwarfs: Continuous or Single-Age Bursts? Webster, David; Bland-Hawthorn, Joss; Sutherland, Ralph The Astrophysical Journal, Vol. 799, Issue 2 https://doi.org/10.1088/2041-8205/799/2/L21	journal	January 2015
Magellanic satellites in ΛCDM cosmological hydrodynamical simulations of the Local Group Santos-Santos, Isabel M. E.; Fattahi, Azadeh; Sales, Laura V. Monthly Notices of the Royal Astronomical Society, Vol. 504, Issue 3 https://doi.org/10.1093/mnras/stab1020	journal	April 2021
Binary neutron star merger in common envelope jets supernovae Soker, Noam Monthly Notices of the Royal Astronomical Society, Vol. 506, Issue 2 https://doi.org/10.1093/mnras/stab1860	journal	July 2021
Galactic r-process enrichment by neutron star mergers in cosmological simulations of a Milky Way-mass galaxy van de Voort, Freeke; Quataert, Eliot; Hopkins, Philip F. Monthly Notices of the Royal Astronomical Society, Vol. 447, Issue 1 https://doi.org/10.1093/mnras/stu2404	journal	December 2014
Chemical evolution of classical and ultra-faint dwarf spheroidal galaxies Vincenzo, F.; Matteucci, F.; Vattakunnel, S. Monthly Notices of the Royal Astronomical Society, Vol. 441, Issue 4 https://doi.org/10.1093/mnras/stu710	journal	May 2014
Red giants in the Small Magellanic Cloud – II. Metallicity gradient and age–metallicity relation Dobbie, P. D.; Cole, A. A.; Subramaniam, A. Monthly Notices of the Royal Astronomical Society, Vol. 442, Issue 2 https://doi.org/10.1093/mnras/stu926	journal	June 2014
Non-LTE line formation of Fe in late-type stars – III. 3D non-LTE analysis of metal-poor stars Amarsi, A. M.; Lind, K.; Asplund, M. Monthly Notices of the Royal Astronomical Society, Vol. 463, Issue 2 https://doi.org/10.1093/mnras/stw2077	journal	August 2016
The solar silicon abundance based on 3D non-LTE calculations Amarsi, A. M.; Asplund, M. Monthly Notices of the Royal Astronomical Society, Vol. 464, Issue 1 https://doi.org/10.1093/mnras/stw2445	journal	September 2016
The need for speed: escape velocity and dynamical mass measurements of the Andromeda galaxy Kafle, Prajwal R.; Sharma, Sanjib; Lewis, Geraint F. Monthly Notices of the Royal Astronomical Society, Vol. 475, Issue 3 https://doi.org/10.1093/mnras/sty082	journal	January 2018
On the dynamics of the Small Magellanic Cloud through high-resolution ASKAP H iobservations Di Teodoro, E. M.; McClure-Griffiths, N. M.; Jameson, K. E. Monthly Notices of the Royal Astronomical Society, Vol. 483, Issue 1 https://doi.org/10.1093/mnras/sty3095	journal	November 2018
Chemical evolution with rotating massive star yields – I. The solar neighbourhood and the s-process elements Prantzos, N.; Abia, C.; Limongi, M. Monthly Notices of the Royal Astronomical Society, Vol. 476, Issue 3 https://doi.org/10.1093/mnras/sty316	journal	February 2018
First results from the IllustrisTNG simulations: a tale of two elements – chemical evolution of magnesium and europium Naiman, Jill P.; Pillepich, Annalisa; Springel, Volker Monthly Notices of the Royal Astronomical Society, Vol. 477, Issue 1 https://doi.org/10.1093/mnras/sty618	journal	March 2018
The total mass of the Large Magellanic Cloud from its perturbation on the Orphan stream Erkal, D.; Belokurov, V.; Laporte, C. F. P. Monthly Notices of the Royal Astronomical Society, Vol. 487, Issue 2 https://doi.org/10.1093/mnras/stz1371	journal	May 2019
Dark and luminous satellites of LMC-mass galaxies in the FIRE simulations Jahn, Ethan D.; Sales, Laura V.; Wetzel, Andrew Monthly Notices of the Royal Astronomical Society, Vol. 489, Issue 4 https://doi.org/10.1093/mnras/stz2457	journal	September 2019
Modern stellar spectroscopy caveats Blanco-Cuaresma, Sergi Monthly Notices of the Royal Astronomical Society, Vol. 486, Issue 2 https://doi.org/10.1093/mnras/stz549	journal	April 2019
Stellar Abundances for Galactic Archaeology Database. IV. Compilation of stars in dwarf galaxies Suda, Takuma; Hidaka, Jun; Aoki, Wako Publications of the Astronomical Society of Japan, Vol. 69, Issue 5 https://doi.org/10.1093/pasj/psx059	journal	August 2017
The NumPy Array: A Structure for Efficient Numerical Computation van der Walt, Stéfan; Colbert, S. Chris; Varoquaux, Gaël Computing in Science & Engineering, Vol. 13, Issue 2 https://doi.org/10.1109/MCSE.2011.37	journal	March 2011
How do galaxies get their gas? Kere , D.; Katz, N.; Weinberg, D. H. Monthly Notices of the Royal Astronomical Society, Vol. 363, Issue 1 https://doi.org/10.1111/j.1365-2966.2005.09451.x	journal	October 2005
Galaxy bimodality due to cold flows and shock heating Dekel, A.; Birnboim, Y. Monthly Notices of the Royal Astronomical Society, Vol. 368, Issue 1 https://doi.org/10.1111/j.1365-2966.2006.10145.x	journal	May 2006
Multimodal nested sampling: an efficient and robust alternative to Markov Chain Monte Carlo methods for astronomical data analyses: Multimodal nested sampling Feroz, F.; Hobson, M. P. Monthly Notices of the Royal Astronomical Society, Vol. 384, Issue 2 https://doi.org/10.1111/j.1365-2966.2007.12353.x	journal	January 2008
The importance of satellite quenching for the build-up of the red sequence of present-day galaxies van den Bosch, Frank C.; Aquino, Daniel; Yang, Xiaohu Monthly Notices of the Royal Astronomical Society, Vol. 387, Issue 1 https://doi.org/10.1111/j.1365-2966.2008.13230.x	journal	June 2008
The total mass and dark halo properties of the Small Magellanic Cloud Bekki, Kenji; Stanimirović, Snežana Monthly Notices of the Royal Astronomical Society, Vol. 395, Issue 1 https://doi.org/10.1111/j.1365-2966.2009.14514.x	journal	May 2009
MultiNest: an efficient and robust Bayesian inference tool for cosmology and particle physics Feroz, F.; Hobson, M. P.; Bridges, M. Monthly Notices of the Royal Astronomical Society, Vol. 398, Issue 4 https://doi.org/10.1111/j.1365-2966.2009.14548.x	journal	October 2009
Ionization balance of Ti in the photospheres of the Sun and four late-type stars: Ionization balance of Ti in late-type stars Bergemann, Maria Monthly Notices of the Royal Astronomical Society, Vol. 413, Issue 3 https://doi.org/10.1111/j.1365-2966.2011.18295.x	journal	March 2011
The Magellan Telescopes Shectman, Stephen A.; Johns, Matthew Astronomical Telescopes and Instrumentation, SPIE Proceedings https://doi.org/10.1117/12.457909	conference	February 2003
MIKE: A Double Echelle Spectrograph for the Magellan Telescopes at Las Campanas Observatory Bernstein, Rebecca; Shectman, Stephen A.; Gunnels, Steven M. Astronomical Telescopes and Instrumentation, SPIE Proceedings https://doi.org/10.1117/12.461502	conference	March 2003
The Iraf Data Reduction And Analysis System Tody, Doug 1986 Astronomy Conferences, SPIE Proceedings https://doi.org/10.1117/12.968154	conference	October 1986
Even-to-Odd Barium Isotope Ratio in Selected Galactic Halo Stars Mashonkina, L. I.; Belyaev, A. K. Astronomy Letters, Vol. 45, Issue 6 https://doi.org/10.1134/S1063773719060033	journal	June 2019
Observational Evidence of Active Galactic Nuclei Feedback Fabian, A. C. Annual Review of Astronomy and Astrophysics, Vol. 50, Issue 1 https://doi.org/10.1146/annurev-astro-081811-125521	journal	September 2012
Near-Field Cosmology with Extremely Metal-Poor Stars Frebel, Anna; Norris, John E. Annual Review of Astronomy and Astrophysics, Vol. 53, Issue 1 https://doi.org/10.1146/annurev-astro-082214-122423	journal	August 2015
Star-Formation Histories, Abundances, and Kinematics of Dwarf Galaxies in the Local Group Tolstoy, Eline; Hill, Vanessa; Tosi, Monica Annual Review of Astronomy and Astrophysics, Vol. 47, Issue 1 https://doi.org/10.1146/annurev-astro-082708-101650	journal	September 2009
Observational Clues to the Progenitors of Type Ia Supernovae Maoz, Dan; Mannucci, Filippo; Nelemans, Gijs Annual Review of Astronomy and Astrophysics, Vol. 52, Issue 1 https://doi.org/10.1146/annurev-astro-082812-141031	journal	August 2014
The Faintest Dwarf Galaxies Simon, Joshua D. Annual Review of Astronomy and Astrophysics, Vol. 57, Issue 1 https://doi.org/10.1146/annurev-astro-091918-104453	journal	August 2019
The Discovery and Analysis of Very Metal-Poor Stars in the Galaxy Beers, Timothy C.; Christlieb, Norbert Annual Review of Astronomy and Astrophysics, Vol. 43, Issue 1 https://doi.org/10.1146/annurev.astro.42.053102.134057	journal	September 2005
Importance Nested Sampling and the MultiNest Algorithm Feroz, Farhan; Hobson, Michael P.; Cameron, Ewan The Open Journal of Astrophysics, Vol. 2, Issue 1 https://doi.org/10.21105/astro.1306.2144	journal	November 2019
DETAILED CHEMICAL ABUNDANCES IN THE r -PROCESS-RICH ULTRA-FAINT DWARF GALAXY RETICULUM 2 Roederer, Ian U.; Mateo, Mario; Iii, John I. Bailey The Astronomical Journal, Vol. 151, Issue 3 https://doi.org/10.3847/0004-6256/151/3/82	journal	February 2016
Aspcap: the Apogee Stellar Parameter and Chemical Abundances Pipeline García Pérez, Ana E.; Prieto, Carlos Allende; Holtzman, Jon A. The Astronomical Journal, Vol. 151, Issue 6 https://doi.org/10.3847/0004-6256/151/6/144	journal	May 2016
The Carnegie Hubble Program: the Distance and Structure of the smc as Revealed by Mid-Infrared Observations of Cepheids Scowcroft, Victoria; Freedman, Wendy L.; Madore, Barry F. The Astrophysical Journal, Vol. 816, Issue 2 https://doi.org/10.3847/0004-637X/816/2/49	journal	January 2015
Core-Collapse Supernovae from 9 to 120 Solar Masses Based on Neutrino-Powered Explosions Sukhbold, Tuguldur; Ertl, T.; Woosley, S. E. The Astrophysical Journal, Vol. 821, Issue 1 https://doi.org/10.3847/0004-637X/821/1/38	journal	April 2016
Mesa Isochrones and Stellar Tracks (Mist). i. Solar-Scaled Models Choi, Jieun; Dotter, Aaron; Conroy, Charlie The Astrophysical Journal, Vol. 823, Issue 2 https://doi.org/10.3847/0004-637X/823/2/102	journal	May 2016
COMPLETE ELEMENT ABUNDANCES OF NINE STARS IN THE r -PROCESS GALAXY RETICULUM II Ji, Alexander P.; Frebel, Anna; Simon, Joshua D. The Astrophysical Journal, Vol. 830, Issue 2 https://doi.org/10.3847/0004-637X/830/2/93	journal	October 2016
Mesa Isochrones and Stellar Tracks (Mist) 0: Methods for the Construction of Stellar Isochrones Dotter, Aaron The Astrophysical Journal Supplement Series, Vol. 222, Issue 1 https://doi.org/10.3847/0067-0049/222/1/8	journal	January 2016
Sloan Digital Sky Survey IV: Mapping the Milky Way, Nearby Galaxies, and the Distant Universe Blanton, Michael R.; Bershady, Matthew A.; Abolfathi, Bela The Astronomical Journal, Vol. 154, Issue 1 https://doi.org/10.3847/1538-3881/aa7567	journal	June 2017
The Apache Point Observatory Galactic Evolution Experiment (APOGEE) Majewski, Steven R.; Schiavon, Ricardo P.; Frinchaboy, Peter M. The Astronomical Journal, Vol. 154, Issue 3 https://doi.org/10.3847/1538-3881/aa784d	journal	August 2017
Target Selection for the SDSS-IV APOGEE-2 Survey Zasowski, G.; Cohen, R. E.; Chojnowski, S. D. The Astronomical Journal, Vol. 154, Issue 5 https://doi.org/10.3847/1538-3881/aa8df9	journal	October 2017
Binary Companions of Evolved Stars in APOGEE DR14: Search Method and Catalog of ∼5000 Companions Price-Whelan, Adrian M.; Hogg, David W.; Rix, Hans-Walter The Astronomical Journal, Vol. 156, Issue 1 https://doi.org/10.3847/1538-3881/aac387	journal	June 2018
Elemental Abundances in M31: Iron and Alpha Element Abundances in M31’s Outer Halo Gilbert, Karoline M.; Wojno, Jennifer; Kirby, Evan N. The Astronomical Journal, Vol. 160, Issue 1 https://doi.org/10.3847/1538-3881/ab9602	journal	June 2020
The Most Metal-poor Stars in the Inner Bulge Reggiani, Henrique; Schlaufman, Kevin C.; Casey, Andrew R. The Astronomical Journal, Vol. 160, Issue 4 https://doi.org/10.3847/1538-3881/aba948	journal	September 2020
The Southern Stellar Stream Spectroscopic Survey ( S ⁵ ): Chemical Abundances of Seven Stellar Streams Ji, Alexander P.; Li, Ting S.; Hansen, Terese T. The Astronomical Journal, Vol. 160, Issue 4 https://doi.org/10.3847/1538-3881/abacb6	journal	September 2020
SYSTEMATIC NON-LTE STUDY OF THE −2.6 ≤ [Fe/H] ≤ 0.2 F AND G DWARFS IN THE SOLAR NEIGHBORHOOD. II. ABUNDANCE PATTERNS FROM Li TO Eu Zhao, G.; Mashonkina, L.; Yan, H. L. The Astrophysical Journal, Vol. 833, Issue 2 https://doi.org/10.3847/1538-4357/833/2/225	journal	December 2016
An r -process Enhanced Star in the Dwarf Galaxy Tucana III Hansen, T. T.; Simon, J. D.; Marshall, J. L. The Astrophysical Journal, Vol. 838, Issue 1 https://doi.org/10.3847/1538-4357/aa634a	journal	March 2017
Production and Distribution of ⁴⁴ Ti and ⁵⁶ Ni in a Three-dimensional Supernova Model Resembling Cassiopeia A Wongwathanarat, Annop; Janka, Hans-Thomas; Müller, Ewald The Astrophysical Journal, Vol. 842, Issue 1 https://doi.org/10.3847/1538-4357/aa72de	journal	June 2017
The Universality of the Rapid Neutron-capture Process Revealed by a Possible Disrupted Dwarf Galaxy Star Casey, Andrew R.; Schlaufman, Kevin C. The Astrophysical Journal, Vol. 850, Issue 2 https://doi.org/10.3847/1538-4357/aa9079	journal	November 2017
The R -process Alliance: First Release from the Southern Search for R -process-enhanced Stars in the Galactic Halo Hansen, Terese T.; Holmbeck, Erika M.; Beers, Timothy C. The Astrophysical Journal, Vol. 858, Issue 2 https://doi.org/10.3847/1538-4357/aabacc	journal	May 2018
A Stringent Limit on the Mass Production Rate of r -process Elements in the Milky Way Macias, Phillip; Ramirez-Ruiz, Enrico The Astrophysical Journal, Vol. 860, Issue 2 https://doi.org/10.3847/1538-4357/aac3e0	journal	June 2018
Gaia Proper Motions and Orbits of the Ultra-faint Milky Way Satellites Simon, Joshua D. The Astrophysical Journal, Vol. 863, Issue 1 https://doi.org/10.3847/1538-4357/aacdfb	journal	August 2018
The R -Process Alliance: First Release from the Northern Search for r -process-enhanced Metal-poor Stars in the Galactic Halo Sakari, Charli M.; Placco, Vinicius M.; Farrell, Elizabeth M. The Astrophysical Journal, Vol. 868, Issue 2 https://doi.org/10.3847/1538-4357/aae9df	journal	November 2018
The Common Envelope Jet Supernova (CEJSN) r -process Scenario Grichener, Aldana; Soker, Noam The Astrophysical Journal, Vol. 878, Issue 1 https://doi.org/10.3847/1538-4357/ab1d5d	journal	June 2019
Elemental Abundances in M31: Alpha and Iron Element Abundances from Low-resolution Resolved Stellar Spectroscopy in the Stellar Halo Escala, Ivanna; Kirby, Evan N.; Gilbert, Karoline M. The Astrophysical Journal, Vol. 878, Issue 1 https://doi.org/10.3847/1538-4357/ab1eac	journal	June 2019
Chemical Abundance Analysis of Tucana III, the Second r -process Enhanced Ultra-faint Dwarf Galaxy Marshall, J. L.; Hansen, T.; Simon, J. D. The Astrophysical Journal, Vol. 882, Issue 2 https://doi.org/10.3847/1538-4357/ab3653	journal	September 2019
Elemental Abundances in M31: A Comparative Analysis of Alpha and Iron Element Abundances in the the Outer Disk, Giant Stellar Stream, and Inner Halo of M31 Escala, Ivanna; Gilbert, Karoline M.; Kirby, Evan N. The Astrophysical Journal, Vol. 889, Issue 2 https://doi.org/10.3847/1538-4357/ab6659	journal	February 2020
The Lazy Giants: APOGEE Abundances Reveal Low Star Formation Efficiencies in the Magellanic Clouds Nidever, David L.; Hasselquist, Sten; Hayes, Christian R. The Astrophysical Journal, Vol. 895, Issue 2 https://doi.org/10.3847/1538-4357/ab7305	journal	May 2020
Elemental Abundances in M31: [Fe/H] and [α/Fe] in M31 Dwarf Galaxies Using Coadded Spectra Wojno, Jennifer; Gilbert, Karoline M.; Kirby, Evan N. The Astrophysical Journal, Vol. 895, Issue 2 https://doi.org/10.3847/1538-4357/ab8ccb	journal	May 2020
The R -Process Alliance: First Magellan/MIKE Release from the Southern Search for R -process-enhanced Stars Ezzeddine, Rana; Rasmussen, Kaitlin; Frebel, Anna The Astrophysical Journal, Vol. 898, Issue 2 https://doi.org/10.3847/1538-4357/ab9d1a	journal	August 2020
The Origin of Elements from Carbon to Uranium Kobayashi, Chiaki; Karakas, Amanda I.; Lugaro, Maria The Astrophysical Journal, Vol. 900, Issue 2 https://doi.org/10.3847/1538-4357/abae65	journal	September 2020
Elemental Abundances in M31: Properties of the Inner Stellar Halo* Escala, Ivanna; Kirby, Evan N.; Gilbert, Karoline M. The Astrophysical Journal, Vol. 902, Issue 1 https://doi.org/10.3847/1538-4357/abb474	journal	October 2020
The Gas Content and Stripping of Local Group Dwarf Galaxies Putman, Mary E.; Zheng, Yong; Price-Whelan, Adrian M. The Astrophysical Journal, Vol. 913, Issue 1 https://doi.org/10.3847/1538-4357/abe391	journal	May 2021
Age-dating Red Giant Stars Associated with Galactic Disk and Halo Substructures Grunblatt, Samuel K.; Zinn, Joel C.; Price-Whelan, Adrian M. The Astrophysical Journal, Vol. 916, Issue 2 https://doi.org/10.3847/1538-4357/ac0532	journal	August 2021
Modules for Experiments in Stellar Astrophysics (${\mathtt{M}}{\mathtt{E}}{\mathtt{S}}{\mathtt{A}}$): Convective Boundaries, Element Diffusion, and Massive Star Explosions Paxton, Bill; Schwab, Josiah; Bauer, Evan B. The Astrophysical Journal Supplement Series, Vol. 234, Issue 2 https://doi.org/10.3847/1538-4365/aaa5a8	journal	February 2018
Modules for Experiments in Stellar Astrophysics (MESA): Pulsating Variable Stars, Rotation, Convective Boundaries, and Energy Conservation Paxton, Bill; Smolec, R.; Schwab, Josiah The Astrophysical Journal Supplement Series, Vol. 243, Issue 1 https://doi.org/10.3847/1538-4365/ab2241	journal	July 2019
The 16th Data Release of the Sloan Digital Sky Surveys: First Release from the APOGEE-2 Southern Survey and Full Release of eBOSS Spectra Ahumada, Romina; Prieto, Carlos Allende; Almeida, Andrés The Astrophysical Journal Supplement Series, Vol. 249, Issue 1 https://doi.org/10.3847/1538-4365/ab929e	journal	June 2020
The R -Process Alliance: Fourth Data Release from the Search for R -process-enhanced Stars in the Galactic Halo Holmbeck, Erika M.; Hansen, Terese T.; Beers, Timothy C. The Astrophysical Journal Supplement Series, Vol. 249, Issue 2 https://doi.org/10.3847/1538-4365/ab9c19	journal	August 2020
OGLE-ing the Magellanic System: Optical Reddening Maps of the Large and Small Magellanic Clouds from Red Clump Stars Skowron, D. M.; Skowron, J.; Udalski, A. The Astrophysical Journal Supplement Series, Vol. 252, Issue 2 https://doi.org/10.3847/1538-4365/abcb81	journal	February 2021
Linemake: An Atomic and Molecular Line List Generator Placco, Vinicius M.; Sneden, Christopher; Roederer, Ian U. Research Notes of the AAS, Vol. 5, Issue 4 https://doi.org/10.3847/2515-5172/abf651	journal	April 2021

Similar Records

CHEMICAL ABUNDANCES OF METAL-POOR RR LYRAE STARS IN THE MAGELLANIC CLOUDS

Journal Article · Sat Sep 01 00:00:00 EDT 2012 · Astronomical Journal (New York, N.Y. Online) · OSTI ID:22089886

ACCRETION OF THE MAGELLANIC SYSTEM ONTO THE GALAXY

Journal Article · Wed Nov 30 23:00:00 EST 2011 · Astrophysical Journal · OSTI ID:22004612

The Most Metal-poor Stars in the Inner Bulge

Journal Article · Thu Oct 01 00:00:00 EDT 2020 · The Astronomical Journal (Online) · OSTI ID:23013381

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
Galaxy accretion
Galaxy chemical evolution
Galaxy environments
Magellanic clouds
Population II stars
Stellar abundances

The Most Metal-poor Stars in the Magellanic Clouds Are r-process Enhanced*

Citation Formats

References (178)

Linked Research (1)

Similar Records

Related Subjects