Farthest neighbor: The distant Milky Way satellite Eridanus II
Abstract
We present Magellan/IMACS spectroscopy of the recently-discovered Milky Way satellite Eridanus II (Eri II). We identify 28 member stars in Eri II, from which we measure a systemic radial velocity of $$v_{\rm hel} = 75.6 \pm 1.3~\mbox{(stat.)} \pm 2.0~\mbox{(sys.)}~\mathrm{km\,s^{-1}}$$ and a velocity dispersion of $$6.9^{+1.2}_{-0.9}~\mathrm{km\,s^{-1}}$$. Assuming that Eri~II is a dispersion-supported system in dynamical equilibrium, we derive a mass within the half-light radius of Eri II is $$1.2^{+0.4}_{-0.3} \times 10^{7}~\mathrm{M_\odot}$$, indicating a mass-to-light ratio of $$420^{+210}_{-140}~\mathrm{M_\odot}/\mathrm{L_\odot}$$ and confirming that it is a dark matter-dominated dwarf galaxy. From the equivalent width measurements of the CaT lines of 16 red giant member stars, we derive a mean metallicity of $${\rm [Fe/H]} = -2.38 \pm 0.13$$ and a metallicity dispersion of $$\sigma_{\rm [Fe/H]} = 0.47 ^{+0.12}_{-0.09}$$. The velocity of Eri II in the Galactic Standard of Rest frame is $$v_{\rm GSR} = -66.6~\mathrm{km\,s^{-1}}$$, indicating that either Eri II is falling into the Milky Way potential for the first time or it has passed the apocenter of its orbit on a subsequent passage. At a Galactocentric distance of $$\sim$$370 kpc, Eri II is one of the Milky Way's most distant satellites known. Additionally, we show that the bright blue stars previously suggested to be a young stellar population are not associated with Eri II. The lack of gas and recent star formation in Eri II is surprising given its mass and distance from the Milky Way, and may place constraints on models of quenching in dwarf galaxies and on the distribution of hot gas in the Milky Way halo. Furthermore, the large velocity dispersion of Eri II can be combined with the existence of a central star cluster to constrain MACHO dark matter with mass $$\gtrsim10~\mathrm{M_\odot}$$.
- Authors:
-
;
;
more »
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Org.:
- DES Collaboration
- OSTI Identifier:
- 1349627
- Alternate Identifier(s):
- OSTI ID: 1345629; OSTI ID: 1368580
- Report Number(s):
- FERMILAB-PUB-16-479-AE-PPD; arXiv:1611.05052
Journal ID: ISSN 1538-4357; KJ0402000; KJ0503000; ERKJ311; ERKJEPM; TRN: US1700601
- Grant/Contract Number:
- AC05-00OR22725; AC02-07CH11359; AC02-76SF00515
- Resource Type:
- Accepted Manuscript
- Journal Name:
- The Astrophysical Journal (Online)
- Additional Journal Information:
- Journal Name: The Astrophysical Journal (Online); Journal Volume: 838; Journal Issue: 1; Journal ID: ISSN 1538-4357
- Publisher:
- Institute of Physics (IOP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; dark matter; galaxies: dwarf; galaxies: individual (Eridanus II); galaxies: stellar content; Local Group; stars: abundances
Citation Formats
Li, T. S., Simon, J. D., Drlica-Wagner, A., Bechtol, K., Wang, M. Y., García-Bellido, J., Frieman, J., Marshall, J. L., James, D. J., Strigari, L., Pace, A. B., Balbinot, E., Zhang, Y., Abbott, T. M. C., Allam, S., Benoit-Lévy, A., Bernstein, G. M., Bertin, E., Brooks, D., Burke, D. L., Rosell, A. Carnero, Kind, M. Carrasco, Carretero, J., Cunha, C. E., D’Andrea, C. B., Costa, L. N. da, DePoy, D. L., Desai, S., Diehl, H. T., Eifler, T. F., Flaugher, B., Goldstein, D. A., Gruen, D., Gruendl, R. A., Gschwend, J., Gutierrez, G., Krause, E., Kuehn, K., Lin, H., Maia, M. A. G., March, M., Menanteau, F., Miquel, R., Plazas, A. A., Romer, A. K., Sanchez, E., Santiago, B., Schubnell, M., Sevilla-Noarbe, I., Smith, R. C., Sobreira, F., Suchyta, E., Tarle, G., Thomas, D., Tucker, D. L., Walker, A. R., Wechsler, R. H., Wester, W., and Yanny, B. Farthest neighbor: The distant Milky Way satellite Eridanus II. United States: N. p., 2017.
Web. doi:10.3847/1538-4357/aa6113.
Li, T. S., Simon, J. D., Drlica-Wagner, A., Bechtol, K., Wang, M. Y., García-Bellido, J., Frieman, J., Marshall, J. L., James, D. J., Strigari, L., Pace, A. B., Balbinot, E., Zhang, Y., Abbott, T. M. C., Allam, S., Benoit-Lévy, A., Bernstein, G. M., Bertin, E., Brooks, D., Burke, D. L., Rosell, A. Carnero, Kind, M. Carrasco, Carretero, J., Cunha, C. E., D’Andrea, C. B., Costa, L. N. da, DePoy, D. L., Desai, S., Diehl, H. T., Eifler, T. F., Flaugher, B., Goldstein, D. A., Gruen, D., Gruendl, R. A., Gschwend, J., Gutierrez, G., Krause, E., Kuehn, K., Lin, H., Maia, M. A. G., March, M., Menanteau, F., Miquel, R., Plazas, A. A., Romer, A. K., Sanchez, E., Santiago, B., Schubnell, M., Sevilla-Noarbe, I., Smith, R. C., Sobreira, F., Suchyta, E., Tarle, G., Thomas, D., Tucker, D. L., Walker, A. R., Wechsler, R. H., Wester, W., & Yanny, B. Farthest neighbor: The distant Milky Way satellite Eridanus II. United States. https://doi.org/10.3847/1538-4357/aa6113
Li, T. S., Simon, J. D., Drlica-Wagner, A., Bechtol, K., Wang, M. Y., García-Bellido, J., Frieman, J., Marshall, J. L., James, D. J., Strigari, L., Pace, A. B., Balbinot, E., Zhang, Y., Abbott, T. M. C., Allam, S., Benoit-Lévy, A., Bernstein, G. M., Bertin, E., Brooks, D., Burke, D. L., Rosell, A. Carnero, Kind, M. Carrasco, Carretero, J., Cunha, C. E., D’Andrea, C. B., Costa, L. N. da, DePoy, D. L., Desai, S., Diehl, H. T., Eifler, T. F., Flaugher, B., Goldstein, D. A., Gruen, D., Gruendl, R. A., Gschwend, J., Gutierrez, G., Krause, E., Kuehn, K., Lin, H., Maia, M. A. G., March, M., Menanteau, F., Miquel, R., Plazas, A. A., Romer, A. K., Sanchez, E., Santiago, B., Schubnell, M., Sevilla-Noarbe, I., Smith, R. C., Sobreira, F., Suchyta, E., Tarle, G., Thomas, D., Tucker, D. L., Walker, A. R., Wechsler, R. H., Wester, W., and Yanny, B. Fri .
"Farthest neighbor: The distant Milky Way satellite Eridanus II". United States. https://doi.org/10.3847/1538-4357/aa6113. https://www.osti.gov/servlets/purl/1349627.
@article{osti_1349627,
title = {Farthest neighbor: The distant Milky Way satellite Eridanus II},
author = {Li, T. S. and Simon, J. D. and Drlica-Wagner, A. and Bechtol, K. and Wang, M. Y. and García-Bellido, J. and Frieman, J. and Marshall, J. L. and James, D. J. and Strigari, L. and Pace, A. B. and Balbinot, E. and Zhang, Y. and Abbott, T. M. C. and Allam, S. and Benoit-Lévy, A. and Bernstein, G. M. and Bertin, E. and Brooks, D. and Burke, D. L. and Rosell, A. Carnero and Kind, M. Carrasco and Carretero, J. and Cunha, C. E. and D’Andrea, C. B. and Costa, L. N. da and DePoy, D. L. and Desai, S. and Diehl, H. T. and Eifler, T. F. and Flaugher, B. and Goldstein, D. A. and Gruen, D. and Gruendl, R. A. and Gschwend, J. and Gutierrez, G. and Krause, E. and Kuehn, K. and Lin, H. and Maia, M. A. G. and March, M. and Menanteau, F. and Miquel, R. and Plazas, A. A. and Romer, A. K. and Sanchez, E. and Santiago, B. and Schubnell, M. and Sevilla-Noarbe, I. and Smith, R. C. and Sobreira, F. and Suchyta, E. and Tarle, G. and Thomas, D. and Tucker, D. L. and Walker, A. R. and Wechsler, R. H. and Wester, W. and Yanny, B.},
abstractNote = {We present Magellan/IMACS spectroscopy of the recently-discovered Milky Way satellite Eridanus II (Eri II). We identify 28 member stars in Eri II, from which we measure a systemic radial velocity of $v_{\rm hel} = 75.6 \pm 1.3~\mbox{(stat.)} \pm 2.0~\mbox{(sys.)}~\mathrm{km\,s^{-1}}$ and a velocity dispersion of $6.9^{+1.2}_{-0.9}~\mathrm{km\,s^{-1}}$. Assuming that Eri~II is a dispersion-supported system in dynamical equilibrium, we derive a mass within the half-light radius of Eri II is $1.2^{+0.4}_{-0.3} \times 10^{7}~\mathrm{M_\odot}$, indicating a mass-to-light ratio of $420^{+210}_{-140}~\mathrm{M_\odot}/\mathrm{L_\odot}$ and confirming that it is a dark matter-dominated dwarf galaxy. From the equivalent width measurements of the CaT lines of 16 red giant member stars, we derive a mean metallicity of ${\rm [Fe/H]} = -2.38 \pm 0.13$ and a metallicity dispersion of $\sigma_{\rm [Fe/H]} = 0.47 ^{+0.12}_{-0.09}$. The velocity of Eri II in the Galactic Standard of Rest frame is $v_{\rm GSR} = -66.6~\mathrm{km\,s^{-1}}$, indicating that either Eri II is falling into the Milky Way potential for the first time or it has passed the apocenter of its orbit on a subsequent passage. At a Galactocentric distance of $\sim$370 kpc, Eri II is one of the Milky Way's most distant satellites known. Additionally, we show that the bright blue stars previously suggested to be a young stellar population are not associated with Eri II. The lack of gas and recent star formation in Eri II is surprising given its mass and distance from the Milky Way, and may place constraints on models of quenching in dwarf galaxies and on the distribution of hot gas in the Milky Way halo. Furthermore, the large velocity dispersion of Eri II can be combined with the existence of a central star cluster to constrain MACHO dark matter with mass $\gtrsim10~\mathrm{M_\odot}$.},
doi = {10.3847/1538-4357/aa6113},
journal = {The Astrophysical Journal (Online)},
number = 1,
volume = 838,
place = {United States},
year = {Fri Mar 17 00:00:00 EDT 2017},
month = {Fri Mar 17 00:00:00 EDT 2017}
}
Free Publicly Available Full Text
Publisher's Version of Record
Other availability
Search WorldCat to find libraries that may hold this journal
Cited by: 96 works
Citation information provided by
Web of Science
Web of Science
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.
Works referenced in this record:
Observation of Gravitational Waves from a Binary Black Hole Merger
journal, February 2016
- Abbott, B. P.; Abbott, R.; Abbott, T. D.
- Physical Review Letters, Vol. 116, Issue 6
Dwarf Galaxy dark Matter Density Profiles Inferred from Stellar and gas Kinematics
journal, June 2014
- Adams, Joshua J.; Simon, Joshua D.; Fabricius, Maximilian H.
- The Astrophysical Journal, Vol. 789, Issue 1
MACHO Project Limits on Black Hole Dark Matter in the 1–30 [ITAL]M[/ITAL][TINF]⊙[/TINF] Range
journal, April 2001
- Alcock, C.; Allsman, R. A.; Alves, D. R.
- The Astrophysical Journal, Vol. 550, Issue 2
Astropy: A community Python package for astronomy
journal, September 2013
- Robitaille, Thomas P.; Tollerud, Erik J.; Greenfield, Perry
- Astronomy & Astrophysics, Vol. 558
Pre-launch estimates for GLAST sensitivity to dark matter annihilation signals
journal, July 2008
- Baltz, E. A.; Berenji, B.; Bertone, G.
- Journal of Cosmology and Astroparticle Physics, Vol. 2008, Issue 07
The H I Parkes All Sky Survey: southern observations, calibration and robust imaging
journal, April 2001
- Barnes, D. G.; Staveley-Smith, L.; de Blok, W. J. G.
- Monthly Notices of the Royal Astronomical Society, Vol. 322, Issue 3
Eight new Milky way Companions Discovered in First-Year dark Energy Survey data
journal, June 2015
- Bechtol, K.; Drlica-Wagner, A.; Balbinot, E.
- The Astrophysical Journal, Vol. 807, Issue 1
Did LIGO Detect Dark Matter?
journal, May 2016
- Bird, Simeon; Cholis, Ilias; Muñoz, Julian B.
- Physical Review Letters, Vol. 116, Issue 20
The Galaxy in Context: Structural, Kinematic, and Integrated Properties
journal, September 2016
- Bland-Hawthorn, Joss; Gerhard, Ortwin
- Annual Review of Astronomy and Astrophysics, Vol. 54, Issue 1
Gas‐Rich Dwarf Spheroidals
journal, October 2000
- Blitz, Leo; Robishaw, Timothy
- The Astrophysical Journal, Vol. 541, Issue 2
THE MILKY WAY'S CIRCULAR-VELOCITY CURVE BETWEEN 4 AND 14 kpc FROM APOGEE DATA
journal, October 2012
- Bovy, Jo; Allende Prieto, Carlos; Beers, Timothy C.
- The Astrophysical Journal, Vol. 759, Issue 2
parsec : stellar tracks and isochrones with the PAdova and TRieste Stellar Evolution Code
journal, October 2012
- Bressan, Alessandro; Marigo, Paola; Girardi, Léo
- Monthly Notices of the Royal Astronomical Society, Vol. 427, Issue 1
The Quenching of the Ultra-Faint Dwarf Galaxies in the Reionization era
journal, November 2014
- Brown, Thomas M.; Tumlinson, Jason; Geha, Marla
- The Astrophysical Journal, Vol. 796, Issue 2
The Parkes H I Survey of the Magellanic System
journal, February 2005
- Brüns, C.; Kerp, J.; Staveley-Smith, L.
- Astronomy & Astrophysics, Vol. 432, Issue 1
Hierarchical Galaxy Formation and Substructure in the Galaxy’s Stellar Halo
journal, February 2001
- Bullock, James S.; Kravtsov, Andrey V.; Weinberg, David H.
- The Astrophysical Journal, Vol. 548, Issue 1
The near-infrared Ca ii triplet as a metallicity indicator – II. Extension to extremely metal-poor metallicity regimes★
journal, July 2013
- Carrera, R.; Pancino, E.; Gallart, C.
- Monthly Notices of the Royal Astronomical Society, Vol. 434, Issue 2
Dark matter profiles and annihilation in dwarf spheroidal galaxies: prospectives for present and future γ-ray observatories - I. The classical dwarf spheroidal galaxies: γ-ray from dark matter annihilation in dSphs
journal, November 2011
- Charbonnier, A.; Combet, C.; Daniel, M.
- Monthly Notices of the Royal Astronomical Society, Vol. 418, Issue 3
Massive primordial black holes from hybrid inflation as dark matter and the seeds of galaxies
journal, July 2015
- Clesse, Sébastien; García-Bellido, Juan
- Physical Review D, Vol. 92, Issue 2
The mass distribution of the Fornax dSph: constraints from its globular cluster distribution: The mass distribution of the Fornax dSph
journal, September 2012
- Cole, David R.; Dehnen, Walter; Read, Justin I.
- Monthly Notices of the Royal Astronomical Society, Vol. 426, Issue 1
Dynamical evidence for a strong tidal interaction between the Milky Way and its satellite, Leo V
journal, January 2017
- Collins, Michelle L. M.; Tollerud, Erik J.; Sand, David J.
- Monthly Notices of the Royal Astronomical Society
Deep Imaging of Eridanus ii and its lone star Cluster
journal, June 2016
- Crnojević, D.; Sand, D. J.; Zaritsky, D.
- The Astrophysical Journal, Vol. 824, Issue 1
Mass Density Profiles of Low Surface Brightness Galaxies
journal, May 2001
- de Blok, W. J. G.; McGaugh, Stacy S.; Bosma, Albert
- The Astrophysical Journal, Vol. 552, Issue 1
The Structural Properties and Star Formation History of Leo T from Deep LBT Photometry
journal, June 2008
- de Jong, J. T. A.; Harris, J.; Coleman, M. G.
- The Astrophysical Journal, Vol. 680, Issue 2
The dependence of dark matter profiles on the stellar-to-halo mass ratio: a prediction for cusps versus cores
journal, November 2013
- Di Cintio, Arianna; Brook, Chris B.; Macciò, Andrea V.
- Monthly Notices of the Royal Astronomical Society, Vol. 437, Issue 1
IMACS: The Inamori-Magellan Areal Camera and Spectrograph on Magellan-Baade
journal, March 2011
- Dressler, Alan; Bigelow, Bruce; Hare, Tyson
- Publications of the Astronomical Society of the Pacific, Vol. 123, Issue 901
IMACS: the wide-field imaging spectrograph on Magellan-Baade
conference, June 2006
- Dressler, Alan; Hare, Tyson; Bigelow, Bruce C.
- SPIE Astronomical Telescopes + Instrumentation, SPIE Proceedings
SEARCH FOR GAMMA-RAY EMISSION FROM DES DWARF SPHEROIDAL GALAXY CANDIDATES WITH FERMI -LAT DATA
journal, August 2015
- Drlica-Wagner, A.; Albert, A.; Bechtol, K.
- The Astrophysical Journal, Vol. 809, Issue 1
Eight Ultra-Faint Galaxy Candidates Discovered in year two of the dark Energy Survey
journal, November 2015
- Drlica-Wagner, A.; Bechtol, K.; Rykoff, E. S.
- The Astrophysical Journal, Vol. 813, Issue 2
The structure of cold dark matter halos
journal, September 1991
- Dubinski, John; Carlberg, R. G.
- The Astrophysical Journal, Vol. 378
Missing mass around galaxies: morphological evidence
journal, November 1974
- Einasto, Jaan; Saar, Enn; Kaasik, Ants
- Nature, Vol. 252, Issue 5479
Bounds on cross sections and lifetimes for dark matter annihilation and decay into charged leptons from gamma-ray observations of dwarf galaxies
journal, July 2009
- Essig, Rouven; Sehgal, Neelima; Strigari, Louis E.
- Physical Review D, Vol. 80, Issue 2
Under pressure: quenching star formation in low-mass satellite galaxies via stripping
journal, August 2016
- Fillingham, Sean P.; Cooper, Michael C.; Pace, Andrew B.
- Monthly Notices of the Royal Astronomical Society, Vol. 463, Issue 2
Taking care of business in a flash : constraining the time-scale for low-mass satellite quenching with ELVIS
journal, October 2015
- Fillingham, Sean P.; Cooper, Michael C.; Wheeler, Coral
- Monthly Notices of the Royal Astronomical Society, Vol. 454, Issue 2
corner.py: Scatterplot matrices in Python
journal, June 2016
- Foreman-Mackey, Daniel
- The Journal of Open Source Software, Vol. 1, Issue 2
emcee : The MCMC Hammer
journal, March 2013
- Foreman-Mackey, Daniel; Hogg, David W.; Lang, Dustin
- Publications of the Astronomical Society of the Pacific, Vol. 125, Issue 925
ELVIS: Exploring the Local Volume in Simulations
journal, January 2014
- Garrison-Kimmel, Shea; Boylan-Kolchin, Michael; Bullock, James S.
- Monthly Notices of the Royal Astronomical Society, Vol. 438, Issue 3
Dwarf Galaxy Annihilation and Decay Emission Profiles for dark Matter Experiments
journal, March 2015
- Geringer-Sameth, Alex; Koushiappas, Savvas M.; Walker, Matthew
- The Astrophysical Journal, Vol. 801, Issue 2
Cuspy no more: how outflows affect the central dark matter and baryon distribution in Λ cold dark matter galaxies: Galaxy cores in ΛCDM
journal, March 2012
- Governato, F.; Zolotov, A.; Pontzen, A.
- Monthly Notices of the Royal Astronomical Society, Vol. 422, Issue 2
H i in Local Group Dwarf Galaxies and Stripping by the Galactic halo
journal, April 2009
- Grcevich, Jana; Putman, Mary E.
- The Astrophysical Journal, Vol. 696, Issue 1
Some astrophysical consequences of the existence of a heavy stable neutral lepton
journal, August 1978
- Gunn, J. E.; Lee, B. W.; Lerche, I.
- The Astrophysical Journal, Vol. 223
Discovery of an Unusual Dwarf Galaxy in the Outskirts of the Milky Way
journal, January 2007
- Irwin, M. J.; Belokurov, V.; Evans, N. W.
- The Astrophysical Journal, Vol. 656, Issue 1
Horologium ii: a Second Ultra-Faint Milky way Satellite in the Horologium Constellation
journal, July 2015
- Kim, Dongwon; Jerjen, Helmut
- The Astrophysical Journal, Vol. 808, Issue 2
A Hero’S dark Horse: Discovery of an Ultra-Faint Milky way Satellite in Pegasus
journal, May 2015
- Kim, Dongwon; Jerjen, Helmut; Mackey, Dougal
- The Astrophysical Journal, Vol. 804, Issue 2
Discovery of a Faint Outer halo Milky way star Cluster in the Southern sky
journal, April 2015
- Kim, Dongwon; Jerjen, Helmut; Milone, Antonino P.
- The Astrophysical Journal, Vol. 803, Issue 2
The Universal Stellar Mass-Stellar Metallicity Relation for Dwarf Galaxies
journal, November 2013
- Kirby, Evan N.; Cohen, Judith G.; Guhathakurta, Puragra
- The Astrophysical Journal, Vol. 779, Issue 2
SEVEN-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE ( WMAP ) OBSERVATIONS: COSMOLOGICAL INTERPRETATION
journal, January 2011
- Komatsu, E.; Smith, K. M.; Dunkley, J.
- The Astrophysical Journal Supplement Series, Vol. 192, Issue 2
Beasts of the Southern Wild: Discovery of nine Ultra Faint Satellites in the Vicinity of the Magellanic Clouds
journal, May 2015
- Koposov, Sergey E.; Belokurov, Vasily; Torrealba, Gabriel
- The Astrophysical Journal, Vol. 805, Issue 2
Did massive black holes in globular clusters initially satisfy galactic scaling relations?
journal, July 2013
- Kruijssen, J. M. Diederik; Lützgendorf, Nora
- Monthly Notices of the Royal Astronomical Society: Letters, Vol. 434, Issue 1
SAGITTARIUS II, DRACO II AND LAEVENS 3: THREE NEW MILKY WAY SATELLITES DISCOVERED IN THE PAN-STARRS 1 3 π SURVEY
journal, October 2015
- Laevens, Benjamin P. M.; Martin, Nicolas F.; Bernard, Edouard J.
- The Astrophysical Journal, Vol. 813, Issue 1
The Hercules Satellite: a Stellar Stream in the Milky way Halo?
journal, September 2010
- Martin, Nicolas F.; Jin, Shoko
- The Astrophysical Journal, Vol. 721, Issue 2
Hydra ii: a Faint and Compact Milky way Dwarf Galaxy Found in the Survey of the Magellanic Stellar History
journal, April 2015
- Martin, Nicolas F.; Nidever, David L.; Besla, Gurtina
- The Astrophysical Journal, Vol. 804, Issue 1
A robust determination of Milky Way satellite properties using hierarchical mass modelling
journal, June 2015
- Martinez, G. D.
- Monthly Notices of the Royal Astronomical Society, Vol. 451, Issue 3
The Observed Properties of Dwarf Galaxies in and Around the Local Group
journal, June 2012
- McConnachie, Alan W.
- The Astronomical Journal, Vol. 144, Issue 1
Revisiting the Influence of Unidentified Binaries on Velocity Dispersion Measurements in Ultra-Faint Stellar Systems
journal, October 2010
- McConnachie, Alan W.; Côté, Patrick
- The Astrophysical Journal, Vol. 722, Issue 2
Correcting Velocity Dispersions of Dwarf Spheroidal Galaxies for Binary Orbital Motion
journal, September 2010
- Minor, Quinn E.; Martinez, Greg; Bullock, James
- The Astrophysical Journal, Vol. 721, Issue 2
The Structure of Cold Dark Matter Halos
journal, May 1996
- Navarro, Julio F.; Frenk, Carlos S.; White, Simon D. M.
- The Astrophysical Journal, Vol. 462
The Mass-to-Light Ratios of the Draco and Ursa Minor Dwarf Spheroidal Galaxies. II. The Binary Population and its Effects on the Measured Velocity Dispersions of Dwarf Spheroidals
journal, February 1996
- Olszewski, Edward W.; Pryor, Carlton; Armandroff, Taft E.
- The Astronomical Journal, Vol. 111
How supernova feedback turns dark matter cusps into cores: Supernova feedback and dark matter cores
journal, March 2012
- Pontzen, Andrew; Governato, Fabio
- Monthly Notices of the Royal Astronomical Society, Vol. 421, Issue 4
On the reported death of the MACHO era
journal, June 2009
- Quinn, D. P.; Wilkinson, M. I.; Irwin, M. J.
- Monthly Notices of the Royal Astronomical Society: Letters, Vol. 396, Issue 1
Late gas accretion on to primordial minihaloes: a model for Leo T, dark galaxies and extragalactic high-velocity clouds
journal, January 2009
- Ricotti, Massimo
- Monthly Notices of the Royal Astronomical Society: Letters, Vol. 392, Issue 1
A synthetic view on structure and evolution of the Milky Way
journal, October 2003
- Robin, A. C.; Reylé, C.; Derrière, S.
- Astronomy & Astrophysics, Vol. 409, Issue 2
The Local Group dwarf Leo T: H i on the brink of star formation: H i in Leo T
journal, January 2008
- Ryan-Weber, Emma V.; Begum, Ayesha; Oosterloo, Tom
- Monthly Notices of the Royal Astronomical Society, Vol. 384, Issue 2
The Near‐Infrared Na i Doublet Feature in M Stars
journal, April 1997
- Schiavon, R. P.; Barbuy, B.; Rossi, S. C. F.
- The Astrophysical Journal, Vol. 479, Issue 2
Local kinematics and the local standard of rest
journal, April 2010
- Schönrich, Ralph; Binney, James; Dehnen, Walter
- Monthly Notices of the Royal Astronomical Society, Vol. 403, Issue 4
Stellar Kinematics and Metallicities in the Ultra-Faint Dwarf Galaxy Reticulum ii
journal, July 2015
- Simon, J. D.; Drlica-Wagner, A.; Li, T. S.
- The Astrophysical Journal, Vol. 808, Issue 1
The Kinematics of the Ultra‐faint Milky Way Satellites: Solving the Missing Satellite Problem
journal, November 2007
- Simon, Joshua D.; Geha, Marla
- The Astrophysical Journal, Vol. 670, Issue 1
A Complete Spectroscopic Survey of the Milky way Satellite Segue 1: the Darkest Galaxy
journal, May 2011
- Simon, Joshua D.; Geha, Marla; Minor, Quinn E.
- The Astrophysical Journal, Vol. 733, Issue 1
Exploring Halo Substructure with Giant Stars. X. Extended Dark Matter or Tidal Disruption?: The Case for the Leo I Dwarf Spheroidal Galaxy
journal, July 2007
- Sohn, Sangmo Tony; Majewski, Steven R.; Munoz, Ricardo R.
- The Astrophysical Journal, Vol. 663, Issue 2
The Dearth of Neutral Hydrogen in Galactic Dwarf Spheroidal Galaxies
journal, October 2014
- Spekkens, Kristine; Urbancic, Natasha; Mason, Brian S.
- The Astrophysical Journal, Vol. 795, Issue 1
A New Look at the Kinematics of Neutral Hydrogen in the Small Magellanic Cloud
journal, March 2004
- Stanimirović, S.; Staveley‐Smith, L.; Jones, P. A.
- The Astrophysical Journal, Vol. 604, Issue 1
The Most Dark‐Matter–dominated Galaxies: Predicted Gamma‐Ray Signals from the Faintest Milky Way Dwarfs
journal, May 2008
- Strigari, Louis E.; Koushiappas, Savvas M.; Bullock, James S.
- The Astrophysical Journal, Vol. 678, Issue 2
The mass profile of the Milky Way to the virial radius from the Illustris simulation
journal, June 2016
- Taylor, Corbin; Boylan-Kolchin, Michael; Torrey, Paul
- Monthly Notices of the Royal Astronomical Society, Vol. 461, Issue 4
Limits on the Macho content of the Galactic Halo from the EROS-2 Survey of the Magellanic Clouds
journal, April 2007
- Tisserand, P.; Le Guillou, L.; Afonso, C.
- Astronomy & Astrophysics, Vol. 469, Issue 2
The feeble giant. Discovery of a large and diffuse Milky Way dwarf galaxy in the constellation of Crater
journal, April 2016
- Torrealba, G.; Koposov, S. E.; Belokurov, V.
- Monthly Notices of the Royal Astronomical Society, Vol. 459, Issue 3
At the survey limits: discovery of the Aquarius 2 dwarf galaxy in the VST ATLAS and the SDSS data
journal, August 2016
- Torrealba, G.; Koposov, S. E.; Belokurov, V.
- Monthly Notices of the Royal Astronomical Society, Vol. 463, Issue 1
New Understanding of Large Magellanic Cloud Structure, Dynamics, and Orbit from Carbon Star Kinematics
journal, November 2002
- van der Marel, Roeland P.; Alves, David R.; Hardy, Eduardo
- The Astronomical Journal, Vol. 124, Issue 5
Internal Kinematics of the Fornax Dwarf Spheroidal Galaxy
journal, April 2006
- Walker, Matthew G.; Mateo, Mario; Olszewski, Edward W.
- The Astronomical Journal, Vol. 131, Issue 4
A Method for Measuring (Slopes of) the mass Profiles of Dwarf Spheroidal Galaxies
journal, November 2011
- Walker, Matthew G.; Peñarrubia, Jorge
- The Astrophysical Journal, Vol. 742, Issue 1
THE STAR FORMATION HISTORIES OF LOCAL GROUP DWARF GALAXIES. I. HUBBLE SPACE TELESCOPE /WIDE FIELD PLANETARY CAMERA 2 OBSERVATIONS
journal, June 2014
- Weisz, Daniel R.; Dolphin, Andrew E.; Skillman, Evan D.
- The Astrophysical Journal, Vol. 789, Issue 2
THE STAR FORMATION HISTORY OF LEO T FROM HUBBLE SPACE TELESCOPE IMAGING
journal, March 2012
- Weisz, Daniel R.; Zucker, Daniel B.; Dolphin, Andrew E.
- The Astrophysical Journal, Vol. 748, Issue 2
On the neutral gas content of nine new Milky Way satellite galaxy candidates
journal, August 2015
- Westmeier, T.; Staveley-Smith, L.; Calabretta, M.
- Monthly Notices of the Royal Astronomical Society, Vol. 453, Issue 1
Rapid Environmental Quenching of Satellite Dwarf Galaxies in the Local Group
journal, July 2015
- Wetzel, Andrew R.; Tollerud, Erik J.; Weisz, Daniel R.
- The Astrophysical Journal, Vol. 808, Issue 1
Sweating the small stuff: simulating dwarf galaxies, ultra-faint dwarf galaxies, and their own tiny satellites
journal, August 2015
- Wheeler, Coral; Oñorbe, Jose; Bullock, James S.
- Monthly Notices of the Royal Astronomical Society, Vol. 453, Issue 2
A synthetic view on structure and evolution of the Milky Way
journal, February 2004
- Robin, A. C.; Reylé, C.; Derrière, S.
- Astronomy & Astrophysics, Vol. 416, Issue 1
The Hercules Satellite: A Stellar Stream in the Milky Way Halo?
journal, January 2011
- Jin, S.; Martin, N. F.
- EAS Publications Series, Vol. 48
Search for Gamma-Ray Emission from des Dwarf Spheroidal Galaxy Candidates with Fermi-Lat data
collection, January 2015
- Drlica-Wagner, A.
- IOP
The feeble giant: Discovery of a large and diffuse Milky Way dwarf galaxy in the constellation of Crater
text, January 2016
- Torrealba, G.; Koposov, Se; Belokurov, V.
- Apollo - University of Cambridge Repository
Two major accretion epochs in M31 from two distinct populations of globular clusters.
journalarticle, January 2019
- Mackey, Dougal; Lewis, Geraint F.; Brewer, Brendon J.
- Springer Science and Business Media LLC
Dark matter profiles and annihilation in dwarf spheroidal galaxies: prospectives for present and future γ-ray observatories – I. The classical dwarf spheroidal galaxies
text, January 2011
- Charbonnier, Ald́ee; Combet, Céline; Daniel, Michael
- ETH Zurich
Pre-launch estimates for GLAST sensitivity to Dark Matter annihilation signals
text, January 2008
- Baltz, E. A.; Berenji, B.; Bertone, G.
- arXiv
On the Reported Death of the MACHO Era
text, January 2009
- Quinn, D. P.; Wilkinson, M. I.; Irwin, M. J.
- arXiv
Local Kinematics and the Local Standard of Rest
text, January 2009
- Schoenrich, R.; Binney, J.; Dehnen, W.
- arXiv
Correcting velocity dispersions of dwarf spheroidal galaxies for binary orbital motion
text, January 2010
- Minor, Quinn E.; Martinez, Greg; Bullock, James
- arXiv
A Complete Spectroscopic Survey of the Milky Way Satellite Segue 1: The Darkest Galaxy
text, January 2010
- Simon, Joshua D.; Geha, Marla; Minor, Quinn E.
- arXiv
The Hercules satellite: a stellar stream in the Milky Way halo?
text, January 2010
- Martin, Nicolas F.; Jin, Shoko
- arXiv
Revisiting the influence of unidentified binaries on velocity dispersion measurements in ultra-faint stellar systems
text, January 2010
- McConnachie, Alan W.; Cote, Patrick
- arXiv
The observed properties of dwarf galaxies in and around the Local Group
text, January 2012
- McConnachie, Alan W.
- arXiv
The dependence of dark matter profiles on the stellar to halo mass ratio: a prediction for cusps vs cores
text, January 2013
- Di Cintio, Arianna; Brook, Chris B.; Maccio, Andrea V.
- arXiv
The Near Infrared Ca II Triplet as Metallicity Indicator: II Extension to extremely metal-poor metallicity regimes
text, January 2013
- Carrera, R.; Pancino, E.; Gallart, C.
- arXiv
The Star Formation Histories of Local Group Dwarf Galaxies I. Hubble Space Telescope / Wide Field Planetary Camera 2 Observations
text, January 2014
- Weisz, Daniel R.; Dolphin, Andrew E.; Skillman, Evan D.
- arXiv
Dwarf Galaxy Dark Matter Density Profiles Inferred from Stellar and Gas Kinematics
text, January 2014
- Adams, Joshua J.; Simon, Joshua D.; Fabricius, Maximilian H.
- arXiv
Dwarf galaxy annihilation and decay emission profiles for dark matter experiments
text, January 2014
- Geringer-Sameth, Alex; Koushiappas, Savvas M.; Walker, Matthew
- arXiv
Search for Gamma-Ray Emission from DES Dwarf Spheroidal Galaxy Candidates with Fermi-LAT Data
text, January 2015
- Collaboration, Lat; Collaboration, The DES; Drlica-Wagner, A.
- arXiv
A New Faint Milky Way Satellite Discovered in the Pan-STARRS1 3 pi Survey
text, January 2015
- Laevens, Benjamin P. M.; Martin, Nicolas F.; Ibata, Rodrigo A.
- arXiv
Hydra II: a faint and compact Milky Way dwarf galaxy found in the Survey of the Magellanic Stellar History
text, January 2015
- Martin, Nicolas F.; Nidever, David L.; Besla, Gurtina
- arXiv
Taking Care of Business in a Flash: Constraining the Timescale for Low-Mass Satellite Quenching with ELVIS
text, January 2015
- Fillingham, Sean P.; Cooper, Michael C.; Wheeler, Coral
- arXiv
Stellar Kinematics and Metallicities in the Ultra-Faint Dwarf Galaxy Reticulum II
text, January 2015
- Simon, J. D.; Drlica-Wagner, A.; Li, T. S.
- arXiv
Eight Ultra-faint Galaxy Candidates Discovered in Year Two of the Dark Energy Survey
text, January 2015
- Collaboration, The DES; Drlica-Wagner, A.; Bechtol, K.
- arXiv
The Galaxy in Context: Structural, Kinematic and Integrated Properties
text, January 2016
- Bland-Hawthorn, Joss; Gerhard, Ortwin
- arXiv
An Ultra-Faint Galaxy Candidate Discovered in Early Data from the Magellanic Satellites Survey
text, January 2016
- Drlica-Wagner, A.; Bechtol, K.; Allam, S.
- arXiv
A New Milky Way Satellite Discovered In The Subaru/Hyper Suprime-Cam Survey
text, January 2016
- Homma, Daisuke; Chiba, Masashi; Okamoto, Sakurako
- arXiv
New Understanding of Large Magellanic Cloud Structure, Dynamics and Orbit from Carbon Star Kinematics
text, January 2002
- van der Marel, Roeland P.; Alves, David R.; Hardy, Eduardo
- arXiv
The Structure of Cold Dark Matter Halos
text, January 1995
- Navarro, Julio F.; Frenk, Carlos S.; White, Simon D. M.
- arXiv
Works referencing / citing this record:
Gaia DR2 proper motions of dwarf galaxies within 420 kpc : Orbits, Milky Way mass, tidal influences, planar alignments, and group infall
journal, November 2018
- Fritz, T. K.; Battaglia, G.; Pawlowski, M. S.
- Astronomy & Astrophysics, Vol. 619
Gaia DR 2 and VLT/FLAMES search for new satellites of the LMC
journal, March 2019
- Fritz, T. K.; Carrera, R.; Battaglia, G.
- Astronomy & Astrophysics, Vol. 623
On the merger rate of primordial black holes: effects of nearest neighbours distribution and clustering
journal, October 2018
- Ballesteros, Guillermo; Serpico, Pasquale D.; Taoso, Marco
- Journal of Cosmology and Astroparticle Physics, Vol. 2018, Issue 10
Improved constraints from ultra-faint dwarf galaxies on primordial black holes as dark matter
journal, January 2020
- Stegmann, Jakob; Capelo, Pedro R.; Bortolas, Elisa
- Monthly Notices of the Royal Astronomical Society, Vol. 492, Issue 4
Extending the globular cluster system–halo mass relation to the lowest galaxy masses
journal, September 2018
- Forbes, Duncan A.; Read, Justin I.; Gieles, Mark
- Monthly Notices of the Royal Astronomical Society, Vol. 481, Issue 4
The suppression of star formation on the smallest scales: what role does environment play?
journal, December 2018
- Rodriguez Wimberly, M. K.; Cooper, M. C.; Fillingham, S. P.
- Monthly Notices of the Royal Astronomical Society, Vol. 483, Issue 3
Tidal stripping and the structure of dwarf galaxies in the Local Group
journal, February 2018
- Fattahi, Azadeh; Navarro, Julio F.; Frenk, Carlos S.
- Monthly Notices of the Royal Astronomical Society, Vol. 476, Issue 3
The hidden giant: discovery of an enormous Galactic dwarf satellite in Gaia DR2
journal, June 2019
- Torrealba, G.; Belokurov, V.; Koposov, S. E.
- Monthly Notices of the Royal Astronomical Society, Vol. 488, Issue 2
Too big to fail in light of Gaia
journal, September 2019
- Kaplinghat, Manoj; Valli, Mauro; Yu, Hai-Bo
- Monthly Notices of the Royal Astronomical Society, Vol. 490, Issue 1
The southern stellar stream spectroscopic survey (S5): Overview, target selection, data reduction, validation, and early science
journal, October 2019
- Li, T. S.; Koposov, S. E.; Zucker, D. B.
- Monthly Notices of the Royal Astronomical Society, Vol. 490, Issue 3
The effect of fluctuating fuzzy axion haloes on stellar dynamics: a stochastic model
journal, December 2019
- El-Zant, Amr A.; Freundlich, Jonathan; Combes, Françoise
- Monthly Notices of the Royal Astronomical Society, Vol. 492, Issue 1
Signatures of Higgs dilaton and critical Higgs inflation
journal, January 2018
- García-Bellido, Juan
- Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 376, Issue 2114
Constraining the primordial black hole abundance with 21-cm cosmology
journal, August 2019
- Mena, Olga; Palomares-Ruiz, Sergio; Villanueva-Domingo, Pablo
- Physical Review D, Vol. 100, Issue 4
Small-scale structure of primordial black hole dark matter and its implications for accretion
journal, October 2019
- Hütsi, Gert; Raidal, Martti; Veermäe, Hardi
- Physical Review D, Vol. 100, Issue 8
Kinematics of Highly r -process-enhanced Field Stars: Evidence for an Accretion Origin and Detection of Several Groups from Disrupted Satellites
journal, October 2018
- Roederer, Ian U.; Hattori, Kohei; Valluri, Monica
- The Astronomical Journal, Vol. 156, Issue 4
Evidence of a Non-universal Stellar Initial Mass Function. Insights from HST Optical Imaging of Six Ultra-faint Dwarf Milky Way Satellites
journal, February 2018
- Gennaro, Mario; Tchernyshyov, Kirill; Brown, Thomas M.
- The Astrophysical Journal, Vol. 855, Issue 1
The Missing Satellites of the Magellanic Clouds? Gaia Proper Motions of the Recently Discovered Ultra-faint Galaxies
journal, October 2018
- Kallivayalil, Nitya; Sales, Laura V.; Zivick, Paul
- The Astrophysical Journal, Vol. 867, Issue 1
Proper Motions of Milky Way Ultra-faint Satellites with Gaia DR2 × DES DR1
journal, April 2019
- Pace, Andrew B.; Li, Ting S.
- The Astrophysical Journal, Vol. 875, Issue 1
Dynamical Histories of the Crater II and Hercules Dwarf Galaxies
journal, September 2019
- Fu, Sal Wanying; Simon, Joshua D.; Jara, Alex G. Alarcón
- The Astrophysical Journal, Vol. 883, Issue 1
Updating the MACHO fraction of the Milky Way dark halowith improved mass models
journal, May 2018
- Calcino, Josh; García-Bellido, Juan; Davis, Tamara M.
- Monthly Notices of the Royal Astronomical Society, Vol. 479, Issue 3
Scaling relations for dark matter annihilation and decay profiles in dwarf spheroidal galaxies
journal, October 2018
- Pace, Andrew B.; Strigari, Louis E.
- Monthly Notices of the Royal Astronomical Society, Vol. 482, Issue 3
NIHAO XV: the environmental impact of the host galaxy on galactic satellite and field dwarf galaxies
journal, October 2018
- Buck, Tobias; Macciò, Andrea V.; Dutton, Aaron A.
- Monthly Notices of the Royal Astronomical Society, Vol. 483, Issue 1
Probing dark matter with star clusters: a dark matter core in the ultra-faint dwarf Eridanus II
journal, February 2018
- Contenta, Filippo; Balbinot, Eduardo; Petts, James A.
- Monthly Notices of the Royal Astronomical Society, Vol. 476, Issue 3
Lower bound on the primordial black hole merger rate
journal, February 2020
- Vaskonen, Ville; Veermäe, Hardi
- Physical Review D, Vol. 101, Issue 4
Clusters of Primordial Black Holes
journal, March 2019
- Belotsky, Konstantin M.; Dokuchaev, Vyacheslav I.; Eroshenko, Yury N.
- The European Physical Journal C, Vol. 79, Issue 3
The hidden giant: Discovery of an enormous Galactic dwarf satellite in Gaia DR2
text, January 2019
- Torrealba, G.; Belokurov, Vasily; Koposov, Sergey
- Apollo - University of Cambridge Repository
Chemical Abundance Analysis of Three α -poor, Metal-poor Stars in the Ultrafaint Dwarf Galaxy Horologium I
journal, January 2018
- Nagasawa, D. Q.; Marshall, J. L.; Li, T. S.
- The Astrophysical Journal, Vol. 852, Issue 2
The First Tidally Disrupted Ultra-faint Dwarf Galaxy?: A Spectroscopic Analysis of the Tucana III Stream
journal, October 2018
- Li, T. S.; Simon, J. D.; Kuehn, K.
- The Astrophysical Journal, Vol. 866, Issue 1
Limits on Stellar-Mass Compact Objects as Dark Matter from Gravitational Lensing of Type Ia Supernovae
journal, October 2018
- Zumalacárregui, Miguel; Seljak, Uroš
- Physical Review Letters, Vol. 121, Issue 14
Ships Passing in the Night: Spectroscopic Analysis of Two Ultra-faint Satellites in the Constellation Carina
journal, April 2018
- Li, T. S.; Simon, J. D.; Pace, A. B.
- The Astrophysical Journal, Vol. 857, Issue 2
Improved constraints from ultra-faint dwarf galaxies on primordial black holes as dark matter
text, January 2020
- Stegmann, Jakob; Capelo, Pedro R.; Bortolas, Elisa
- Oxford University Press
Searching for Primordial Black Holes in the radio and X-ray sky
text, January 2016
- Gaggero, Daniele; Bertone, Gianfranco; Calore, Francesca
- arXiv
Dynamics of dwarf galaxies disfavor stellar-mass black hole dark matter
text, January 2017
- Koushiappas, Savvas M.; Loeb, Abraham
- arXiv
Probing dark matter with star clusters: a dark matter core in the ultra-faint dwarf Eridanus II
text, January 2017
- Contenta, Filippo; Balbinot, Eduardo; Petts, James A.
- arXiv
CMB bounds on disk-accreting massive Primordial Black Holes
text, January 2017
- Poulin, Vivian; Serpico, Pasquale D.; Calore, Francesca
- arXiv
Limits on stellar-mass compact objects as dark matter from gravitational lensing of type Ia supernovae
text, January 2017
- Zumalacarregui, Miguel; Seljak, Uros
- arXiv
Clusters of primordial black holes
text, January 2018
- Belotsky, Konstantin M.; Dokuchaev, Vyacheslav I.; Eroshenko, Yury N.
- arXiv
Dynamical Histories of the Crater II and Hercules Dwarf Galaxies
text, January 2019
- Fu, Sal Wanying; Simon, Joshua D.; Jara, Alex G. Alarcón
- arXiv
Too Big To Fail in Light of Gaia
text, January 2019
- Kaplinghat, Manoj; Valli, Mauro; Yu, Hai-Bo
- arXiv
Small-scale structure of primordial black hole dark matter and its implications for accretion
text, January 2019
- Hütsi, Gert; Raidal, Martti; Veermäe, Hardi
- arXiv
Lower bound on the primordial black hole merger rate
text, January 2019
- Vaskonen, Ville; Veermäe, Hardi
- arXiv