DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Synthesizing Stellar Populations in South Pole Telescope Galaxy Clusters. I. Ages of Quiescent Member Galaxies at 0.3 < $$\textit{z}$$ < 1.4

Abstract

Using stellar population synthesis models to infer star formation histories (SFHs), we analyze photometry and spectroscopy of a large sample of quiescent galaxies that are members of Sunyaev–Zel'dovich (SZ)-selected galaxy clusters across a wide range of redshifts. We calculate stellar masses and mass-weighted ages for 837 quiescent cluster members at 0.3 < $$\textit{z}$$ < 1.4 using rest-frame optical spectra and the Python-based Prospector framework, from 61 clusters in the SPT-GMOS Spectroscopic Survey (0.3 < $$\textit{z}$$ < 0.9) and three clusters in the SPT Hi-z cluster sample (1.25 < $$\textit{z}$$ < 1.4). We analyze spectra of subpopulations divided into bins of redshift, stellar mass, cluster mass, and velocity-radius phase-space location, as well as by creating composite spectra of quiescent member galaxies. We find that quiescent galaxies in our data set sample a diversity of SFHs, with a median formation redshift (corresponding to the lookback time from the redshift of observation to when a galaxy forms 50% of its mass, $$t_{50}$$) of $$\textit{z}$$ = 2.8 ± 0.5, which is similar to or marginally higher than that of massive quiescent field and cluster galaxy studies. We also report median age–stellar mass relations for the full sample (age of the universe at $$t_{50}$$ (Gyr) = 2.52 (±0.04)–1.66 (±0.12) log$$_{10}(M/10^{11}M_⊙$$)) and recover downsizing trends across stellar mass; we find that massive galaxies in our cluster sample form on aggregate ~0.75 Gyr earlier than lower-mass galaxies. We also find marginally steeper age–mass relations at high redshifts, and report a bigger difference in formation redshifts across stellar mass for fixed environment, relative to formation redshifts across environment for fixed stellar mass.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [2]; ORCiD logo [4]; ORCiD logo [5];  [6]; ORCiD logo [7]; ORCiD logo [4]; ORCiD logo [8]; ORCiD logo [9]; ORCiD logo [4]; ORCiD logo [10]; ORCiD logo [11]; ORCiD logo [12]; ORCiD logo [13]; ORCiD logo [14]
  1. Univ. of Chicago, IL (United States); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  2. Univ. of Cincinnati, OH (United States)
  3. Univ. of Chicago, IL (United States)
  4. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  5. Istituto Nazionale di Astrofisica (INAF), Trieste (Italy). Osservatorio Astronomico di Trieste; Istituto Nazionale di Astrofisica (INAF), Merate (Italy). Osservatorio Astronomico di Brera
  6. Univ. of Chicago, IL (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
  7. Durham Univ. (United Kingdom)
  8. Univ. of Missouri, Kansas City, MO (United States)
  9. Univ. of Melbourne, Parkville, VIC (Australia)
  10. Univ. of Trieste (Italy); Institute for Fundamental Physics of the Universe (IFPU), Trieste (Italy); Osservatorio Astronomico di Trieste (Italy); National Institute for Nuclear Physics, Trieste (Italy)
  11. Univ. of Michigan, Ann Arbor, MI (United States)
  12. Stanford Univ., CA (United States). Kavli Institute for Particle Astrophysics & Cosmology
  13. Vera C. Rubin Observatory Project Office, Tucson, AZ (United States); Harvard & Smithsonian, Cambridge, MA (United States)
  14. Harvard & Smithsonian, Cambridge, MA (United States)
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Org.:
National Science Foundation (NSF); Gordon and Betty Moore Foundation; USDOE Office of Science (SC), High Energy Physics (HEP); Australian Research Council (ARC); European Union’s Horizon 2020; European Research Council (ERC); Ministry of Education, University and Research (MIUR)
OSTI Identifier:
1958319
Grant/Contract Number:  
AC02-06CH11357; PLR-1248097; OPP-1852617; PHY-1125897; GBMF#947; MARACAS-DLV-896778; 716762; R165SBKTMA
Resource Type:
Accepted Manuscript
Journal Name:
The Astrophysical Journal
Additional Journal Information:
Journal Volume: 934; Journal Issue: 2; Journal ID: ISSN 0004-637X
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; Galaxy Clusters: High-redshift galaxy clusters; galaxies: quenched galaxies; galaxy evolution: galaxy quenching; photometry: spectral energy distribution; spectroscopy: galaxy spectroscopy

Citation Formats

Khullar, Gourav, Bayliss, Matthew B., Gladders, Michael D., Kim, Keunho J., Calzadilla, Michael S., Strazzullo, Veronica, Bleem, Lindsey E., Mahler, Guillaume, McDonald, Michael, Floyd, Benjamin, Reichardt, Christian L., Ruppin, Florian, Saro, Alexandro, Sharon, Keren, Somboonpanyakul, Taweewat, Stalder, Brian, and Stark, Antony A. Synthesizing Stellar Populations in South Pole Telescope Galaxy Clusters. I. Ages of Quiescent Member Galaxies at 0.3 < $\textit{z}$ < 1.4. United States: N. p., 2022. Web. doi:10.3847/1538-4357/ac7c0c.
Khullar, Gourav, Bayliss, Matthew B., Gladders, Michael D., Kim, Keunho J., Calzadilla, Michael S., Strazzullo, Veronica, Bleem, Lindsey E., Mahler, Guillaume, McDonald, Michael, Floyd, Benjamin, Reichardt, Christian L., Ruppin, Florian, Saro, Alexandro, Sharon, Keren, Somboonpanyakul, Taweewat, Stalder, Brian, & Stark, Antony A. Synthesizing Stellar Populations in South Pole Telescope Galaxy Clusters. I. Ages of Quiescent Member Galaxies at 0.3 < $\textit{z}$ < 1.4. United States. https://doi.org/10.3847/1538-4357/ac7c0c
Khullar, Gourav, Bayliss, Matthew B., Gladders, Michael D., Kim, Keunho J., Calzadilla, Michael S., Strazzullo, Veronica, Bleem, Lindsey E., Mahler, Guillaume, McDonald, Michael, Floyd, Benjamin, Reichardt, Christian L., Ruppin, Florian, Saro, Alexandro, Sharon, Keren, Somboonpanyakul, Taweewat, Stalder, Brian, and Stark, Antony A. Thu . "Synthesizing Stellar Populations in South Pole Telescope Galaxy Clusters. I. Ages of Quiescent Member Galaxies at 0.3 < $\textit{z}$ < 1.4". United States. https://doi.org/10.3847/1538-4357/ac7c0c. https://www.osti.gov/servlets/purl/1958319.
@article{osti_1958319,
title = {Synthesizing Stellar Populations in South Pole Telescope Galaxy Clusters. I. Ages of Quiescent Member Galaxies at 0.3 < $\textit{z}$ < 1.4},
author = {Khullar, Gourav and Bayliss, Matthew B. and Gladders, Michael D. and Kim, Keunho J. and Calzadilla, Michael S. and Strazzullo, Veronica and Bleem, Lindsey E. and Mahler, Guillaume and McDonald, Michael and Floyd, Benjamin and Reichardt, Christian L. and Ruppin, Florian and Saro, Alexandro and Sharon, Keren and Somboonpanyakul, Taweewat and Stalder, Brian and Stark, Antony A.},
abstractNote = {Using stellar population synthesis models to infer star formation histories (SFHs), we analyze photometry and spectroscopy of a large sample of quiescent galaxies that are members of Sunyaev–Zel'dovich (SZ)-selected galaxy clusters across a wide range of redshifts. We calculate stellar masses and mass-weighted ages for 837 quiescent cluster members at 0.3 < $\textit{z}$ < 1.4 using rest-frame optical spectra and the Python-based Prospector framework, from 61 clusters in the SPT-GMOS Spectroscopic Survey (0.3 < $\textit{z}$ < 0.9) and three clusters in the SPT Hi-z cluster sample (1.25 < $\textit{z}$ < 1.4). We analyze spectra of subpopulations divided into bins of redshift, stellar mass, cluster mass, and velocity-radius phase-space location, as well as by creating composite spectra of quiescent member galaxies. We find that quiescent galaxies in our data set sample a diversity of SFHs, with a median formation redshift (corresponding to the lookback time from the redshift of observation to when a galaxy forms 50% of its mass, $t_{50}$) of $\textit{z}$ = 2.8 ± 0.5, which is similar to or marginally higher than that of massive quiescent field and cluster galaxy studies. We also report median age–stellar mass relations for the full sample (age of the universe at $t_{50}$ (Gyr) = 2.52 (±0.04)–1.66 (±0.12) log$_{10}(M/10^{11}M_⊙$)) and recover downsizing trends across stellar mass; we find that massive galaxies in our cluster sample form on aggregate ~0.75 Gyr earlier than lower-mass galaxies. We also find marginally steeper age–mass relations at high redshifts, and report a bigger difference in formation redshifts across stellar mass for fixed environment, relative to formation redshifts across environment for fixed stellar mass.},
doi = {10.3847/1538-4357/ac7c0c},
journal = {The Astrophysical Journal},
number = 2,
volume = 934,
place = {United States},
year = {Thu Aug 04 00:00:00 EDT 2022},
month = {Thu Aug 04 00:00:00 EDT 2022}
}

Works referenced in this record:

The Fundamental Plane of Cluster Elliptical Galaxies at z  = 1.25
journal, January 2005

  • Holden, B. P.; van der Wel, A.; Franx, M.
  • The Astrophysical Journal, Vol. 620, Issue 2
  • DOI: 10.1086/428663

The Astropy Project: Building an Open-science Project and Status of the v2.0 Core Package
journal, August 2018

  • Price-Whelan, A. M.; Sipőcz, B. M.; Günther, H. M.
  • The Astronomical Journal, Vol. 156, Issue 3
  • DOI: 10.3847/1538-3881/aabc4f

THE AGES, METALLICITIES, AND ELEMENT ABUNDANCE RATIOS OF MASSIVE QUENCHED GALAXIES AT $z\simeq 1.6$
journal, July 2015


The Propagation of Uncertainties in Stellar Population Synthesis Modeling. iii. Model Calibration, Comparison, and Evaluation
journal, March 2010


The Formation of Massive Cluster Galaxies
journal, August 2010


Passively Evolving Early‐Type Galaxies at 1.4 ≲ z ≲ 2.5 in the Hubble Ultra Deep Field
journal, June 2005

  • Daddi, E.; Renzini, A.; Pirzkal, N.
  • The Astrophysical Journal, Vol. 626, Issue 2
  • DOI: 10.1086/430104

Velocity Segregation and Systematic Biases in Velocity Dispersion Estimates with the SPT-GMOS Spectroscopic Survey
journal, March 2017

  • Bayliss, Matthew. B.; Zengo, Kyle; Ruel, Jonathan
  • The Astrophysical Journal, Vol. 837, Issue 1
  • DOI: 10.3847/1538-4357/aa607c

Stellar Population Inference with Prospector
journal, May 2021

  • Johnson, Benjamin D.; Leja, Joel; Conroy, Charlie
  • The Astrophysical Journal Supplement Series, Vol. 254, Issue 2
  • DOI: 10.3847/1538-4365/abef67

The Gemini Deep Deep Survey. I. Introduction to the Survey, Catalogs, and Composite Spectra
journal, May 2004

  • Abraham, Roberto G.; Glazebrook, Karl; McCarthy, Patrick J.
  • The Astronomical Journal, Vol. 127, Issue 5
  • DOI: 10.1086/383557

The mass-metallicity relation in galaxy clusters: the relative importance of cluster membership versus local environment
journal, July 2009


Comprehensive stellar population models and the disentanglement of age and metallicity effects
journal, November 1994

  • Worthey, Guy
  • The Astrophysical Journal Supplement Series, Vol. 95
  • DOI: 10.1086/192096

Spectral evolution of galaxies. I - Early-type systems
journal, October 1983

  • Bruzual A., G.
  • The Astrophysical Journal, Vol. 273
  • DOI: 10.1086/161352

The evolution of disk galaxies and the origin of S0 galaxies
journal, April 1980

  • Larson, R. B.; Tinsley, B. M.; Caldwell, C. N.
  • The Astrophysical Journal, Vol. 237
  • DOI: 10.1086/157917

Modelling feedback from stars and black holes in galaxy mergers
journal, August 2005

  • Springel, Volker; Di Matteo, Tiziana; Hernquist, Lars
  • Monthly Notices of the Royal Astronomical Society, Vol. 361, Issue 3
  • DOI: 10.1111/j.1365-2966.2005.09238.x

SPECTROSCOPIC CONFIRMATION OF THREE RED-SEQUENCE SELECTED GALAXY CLUSTERS AT z = 0.87, 1.16, AND 1.21 FROM THE SPARCS SURVEY
journal, February 2010


Morphological Evolution and the Ages of Early‐Type Galaxies in Clusters
journal, May 2001

  • van Dokkum, Pieter G.; Franx, Marijn
  • The Astrophysical Journal, Vol. 553, Issue 1
  • DOI: 10.1086/320645

The VANDELS survey: the star-formation histories of massive quiescent galaxies at 1.0 < z < 1.3
journal, September 2019

  • Carnall, A. C.; McLure, R. J.; Dunlop, J. S.
  • Monthly Notices of the Royal Astronomical Society, Vol. 490, Issue 1
  • DOI: 10.1093/mnras/stz2544

The High-redshift Clusters Occupied by Bent Radio AGN (COBRA) Survey: The Spitzer Catalog
journal, July 2017

  • Paterno-Mahler, R.; Blanton, E. L.; Brodwin, M.
  • The Astrophysical Journal, Vol. 844, Issue 1
  • DOI: 10.3847/1538-4357/aa7b89

Detailed Structural Decomposition of Galaxy Images
journal, July 2002

  • Peng, Chien Y.; Ho, Luis C.; Impey, Chris D.
  • The Astronomical Journal, Vol. 124, Issue 1
  • DOI: 10.1086/340952

The SPTpol Extended Cluster Survey
journal, March 2020

  • Bleem, L. E.; Bocquet, S.; Stalder, B.
  • The Astrophysical Journal Supplement Series, Vol. 247, Issue 1
  • DOI: 10.3847/1538-4365/ab6993

SPT-CL J0546-5345: A MASSIVE z >1 GALAXY CLUSTER SELECTED VIA THE SUNYAEV-ZEL'DOVICH EFFECT WITH THE SOUTH POLE TELESCOPE
journal, August 2010


New Insight on Galaxy Formation and Evolution From Keck Spectroscopy of the Hawaii Deep Fields
journal, September 1996

  • Cowie, Lennox L.; Songaila, Antoinette; Hu, Ester M.
  • The Astronomical Journal, Vol. 112
  • DOI: 10.1086/118058

The merger rates and mass assembly histories of dark matter haloes in the two Millennium simulations: Merger rates
journal, June 2010

  • Fakhouri, Onsi; Ma, Chung-Pei; Boylan-Kolchin, Michael
  • Monthly Notices of the Royal Astronomical Society, Vol. 406, Issue 4
  • DOI: 10.1111/j.1365-2966.2010.16859.x

mufasa: galaxy formation simulations with meshless hydrodynamics
journal, July 2016

  • Davé, Romeel; Thompson, Robert; Hopkins, Philip F.
  • Monthly Notices of the Royal Astronomical Society, Vol. 462, Issue 3
  • DOI: 10.1093/mnras/stw1862

THE CARNEGIE-SPITZER-IMACS REDSHIFT SURVEY OF GALAXY EVOLUTION SINCE z = 1.5. I. DESCRIPTION AND METHODOLOGY
journal, February 2014


Morphological Transformation from Galaxy Harassment
journal, March 1998

  • Moore, Ben; Lake, George; Katz, Neal
  • The Astrophysical Journal, Vol. 495, Issue 1
  • DOI: 10.1086/305264

THE RELATION BETWEEN COOL CLUSTER CORES AND HERSCHEL -DETECTED STAR FORMATION IN BRIGHTEST CLUSTER GALAXIES
journal, February 2012


The Fundamental Plane of cluster spheroidal galaxies at z ∼ 1.3: evidence for mass-dependent evolution
journal, November 2019

  • Saracco, P.; Gargiulo, A.; La Barbera, F.
  • Monthly Notices of the Royal Astronomical Society, Vol. 491, Issue 2
  • DOI: 10.1093/mnras/stz3109

The Remarkable Similarity of Massive Galaxy Clusters from z ∼ 0 to z ∼ 1.9
journal, June 2017


Formation of Galaxy Clusters
journal, September 2012


Evolution of the Color‐Magnitude Relation in High‐Redshift Clusters: Early‐Type Galaxies in the Lynx Supercluster at z ∼ 1.26
journal, June 2006

  • Mei, Simona; Holden, Brad P.; Blakeslee, John P.
  • The Astrophysical Journal, Vol. 644, Issue 2
  • DOI: 10.1086/503826

Phase-space Analysis in the Group and Cluster Environment: Time Since Infall and Tidal Mass Loss
journal, July 2017


STAR FORMATION AND AGN ACTIVITY IN GALAXY CLUSTERS FROM z = 1–2: A MULTI-WAVELENGTH ANALYSIS FEATURING HERSCHEL /PACS
journal, June 2016


Massive lossless data compression and multiple parameter estimation from galaxy spectra
journal, October 2000


CHARTING THE EVOLUTION OF THE AGES AND METALLICITIES OF MASSIVE GALAXIES SINCE z = 0.7
journal, May 2014


Resolving the hydrostatic mass profiles of galaxy clusters at z ∼ 1 with XMM - Newton and Chandra
journal, September 2018


THE MASSIVE AND DISTANT CLUSTERS OF WISE SURVEY: MOO J1142+1527, A 10 15 M GALAXY CLUSTER AT z = 1.19
journal, October 2015


An IR-selected Galaxy Cluster at z = 1.41
journal, November 2005

  • Stanford, S. A.; Eisenhardt, Peter R.; Brodwin, Mark
  • The Astrophysical Journal, Vol. 634, Issue 2
  • DOI: 10.1086/499045

The Iraf Data Reduction And Analysis System
conference, October 1986


THE MASSIVE DISTANT CLUSTERS OF WISE SURVEY: THE FIRST DISTANT GALAXY CLUSTER DISCOVERED BY WISE
journal, October 2012

  • Gettings, Daniel P.; Gonzalez, Anthony H.; Stanford, S. Adam
  • The Astrophysical Journal, Vol. 759, Issue 1
  • DOI: 10.1088/2041-8205/759/1/L23

Gemini Observations of Galaxies in Rich Early Environments (GOGREEN) I: survey description
journal, June 2017

  • Balogh, Michael L.; Gilbank, David G.; Muzzin, Adam
  • Monthly Notices of the Royal Astronomical Society, Vol. 470, Issue 4
  • DOI: 10.1093/mnras/stx1370

Evolution of red-sequence cluster galaxies from redshift 0.8 to 0.4: ages, metallicities, and morphologies
journal, March 2009


The Evolution of the Quenching of Star Formation in Cluster Galaxies since z ∼ 1
journal, May 2019

  • Pintos-Castro, I.; Yee, H. K. C.; Muzzin, A.
  • The Astrophysical Journal, Vol. 876, Issue 1
  • DOI: 10.3847/1538-4357/ab14ee

First results from the TNG50 simulation: galactic outflows driven by supernovae and black hole feedback
journal, August 2019

  • Nelson, Dylan; Pillepich, Annalisa; Springel, Volker
  • Monthly Notices of the Royal Astronomical Society, Vol. 490, Issue 3
  • DOI: 10.1093/mnras/stz2306

Stellar populations of galaxies in the ALHAMBRA survey up to z ∼ 1
journal, November 2019


Galaxy Populations in Massive z = 0.2–0.9 Clusters. I. Analysis of Spectroscopy
journal, November 2017

  • Jørgensen, Inger; Chiboucas, Kristin; Berkson, Emily
  • The Astronomical Journal, Vol. 154, Issue 6
  • DOI: 10.3847/1538-3881/aa96a3

Luminosity Evolution of Early-Type Galaxies to [CLC][ITAL]z[/ITAL][/CLC] = 0.83: Constraints on Formation Epoch and Ω
journal, September 1998

  • van Dokkum, Pieter G.; Franx, Marijn; Kelson, Daniel D.
  • The Astrophysical Journal, Vol. 504, Issue 1
  • DOI: 10.1086/311567

How to Measure Galaxy Star Formation Histories. I. Parametric Models
journal, March 2019

  • Carnall, Adam C.; Leja, Joel; Johnson, Benjamin D.
  • The Astrophysical Journal, Vol. 873, Issue 1
  • DOI: 10.3847/1538-4357/ab04a2

Mass assembly in quiescent and star-forming galaxies since z ≃ 4 from UltraVISTA
journal, July 2013


A SPITZER -SELECTED GALAXY CLUSTER AT z = 1.62
journal, June 2010


Optical Spectroscopy and Velocity Dispersions of Galaxy Clusters from the Spt-Sz Survey
journal, August 2014


AGES OF MASSIVE GALAXIES AT 0.5 >z> 2.0 FROM 3D-HSTREST-FRAME OPTICAL SPECTROSCOPY
journal, April 2016

  • Fumagalli, Mattia; Franx, Marijn; Dokkum, Pieter van
  • The Astrophysical Journal, Vol. 822, Issue 1
  • DOI: 10.3847/0004-637X/822/1/1

Stellar masses and star formation histories for 10 5 galaxies from the Sloan Digital Sky Survey
journal, May 2003

  • Kauffmann, Guinevere; Heckman, Timothy M.; Simon White, D. M.
  • Monthly Notices of the Royal Astronomical Society, Vol. 341, Issue 1
  • DOI: 10.1046/j.1365-8711.2003.06291.x

X-RAY EMISSION FROM TWO INFRARED-SELECTED GALAXY CLUSTERS AT z > 1.4 IN THE IRAC SHALLOW CLUSTER SURVEY
journal, April 2011


Old galaxies in the young Universe
journal, July 2004


On the variation of the initial mass function
journal, April 2001


The extended ROSAT-ESO flux limited X-ray galaxy cluster survey (REFLEX II) II. Construction and properties of the survey
journal, June 2013


Galaxy Clusters Selected via the Sunyaev–Zel’dovich Effect in the SPTpol 100-square-degree Survey
journal, February 2020


The Evolution of star Formation Histories of Quiescent Galaxies
journal, November 2016

  • Pacifici, Camilla; Kassin, Susan A.; Weiner, Benjamin J.
  • The Astrophysical Journal, Vol. 832, Issue 1
  • DOI: 10.3847/0004-637X/832/1/79

Stellar population synthesis at the resolution of 2003
journal, October 2003


Matplotlib: A 2D Graphics Environment
journal, January 2007


THE ASSEMBLY HISTORIES OF QUIESCENT GALAXIES SINCE z = 0.7 FROM ABSORPTION LINE SPECTROSCOPY
journal, August 2014


THE EVOLUTION OF THE STELLAR MASS FUNCTIONS OF STAR-FORMING AND QUIESCENT GALAXIES TO z = 4 FROM THE COSMOS/UltraVISTA SURVEY
journal, October 2013


NINE-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE ( WMAP ) OBSERVATIONS: COSMOLOGICAL PARAMETER RESULTS
journal, September 2013

  • Hinshaw, G.; Larson, D.; Komatsu, E.
  • The Astrophysical Journal Supplement Series, Vol. 208, Issue 2
  • DOI: 10.1088/0067-0049/208/2/19

Spt-Gmos: a Gemini/Gmos-South Spectroscopic Survey of Galaxy Clusters in the Spt-Sz Survey
journal, November 2016

  • Bayliss, M. B.; Ruel, J.; Stubbs, C. W.
  • The Astrophysical Journal Supplement Series, Vol. 227, Issue 1
  • DOI: 10.3847/0067-0049/227/1/3

Tracing the quenching history of cluster galaxies in the EAGLE simulation
journal, June 2019

  • Pallero, Diego; Gómez, Facundo A.; Padilla, Nelson D.
  • Monthly Notices of the Royal Astronomical Society, Vol. 488, Issue 1
  • DOI: 10.1093/mnras/stz1745

The NumPy Array: A Structure for Efficient Numerical Computation
journal, March 2011

  • van der Walt, Stéfan; Colbert, S. Chris; Varoquaux, Gaël
  • Computing in Science & Engineering, Vol. 13, Issue 2
  • DOI: 10.1109/MCSE.2011.37

The Atacama Cosmology Telescope: dynamical masses for 44 SZ-selected galaxy clusters over 755 square degrees
journal, May 2016

  • Sifón, Cristóbal; Battaglia, Nick; Hasselfield, Matthew
  • Monthly Notices of the Royal Astronomical Society, Vol. 461, Issue 1
  • DOI: 10.1093/mnras/stw1284

THE GROWTH OF COOL CORES AND EVOLUTION OF COOLING PROPERTIES IN A SAMPLE OF 83 GALAXY CLUSTERS AT 0.3 < z < 1.2 SELECTED FROM THE SPT-SZ SURVEY
journal, August 2013


Spot the difference: Impact of different selection criteria on observed properties of passive galaxies in zCOSMOS-20k⋆ sample
journal, October 2013


Fast, Slow, Early, Late: Quenching Massive Galaxies at z ∼ 0.8
journal, February 2022

  • Tacchella, Sandro; Conroy, Charlie; Faber, S. M.
  • The Astrophysical Journal, Vol. 926, Issue 2
  • DOI: 10.3847/1538-4357/ac449b

The Alhambra Survey: a Large area Multimedium-Band Optical and Near-Infrared Photometric Survey
journal, August 2008


Galaxy evolution in groups and clusters: star formation rates, red sequence fractions and the persistent bimodality: Galaxy evolution in groups and clusters
journal, May 2012

  • Wetzel, Andrew R.; Tinker, Jeremy L.; Conroy, Charlie
  • Monthly Notices of the Royal Astronomical Society, Vol. 424, Issue 1
  • DOI: 10.1111/j.1365-2966.2012.21188.x

The FLAMINGOS Extragalactic Survey
journal, March 2006

  • Elston, Richard J.; Gonzalez, Anthony H.; McKenzie, Eric
  • The Astrophysical Journal, Vol. 639, Issue 2
  • DOI: 10.1086/499423

The Age and Metallicity Range of Early‐Type Galaxies in Clusters
journal, August 1999

  • Ferreras, Ignacio; Charlot, Stephane; Silk, Joseph
  • The Astrophysical Journal, Vol. 521, Issue 1
  • DOI: 10.1086/307513

Demonstrating Diversity in Star-Formation Histories with the csi Survey
journal, December 2016


Galaxy Population Properties in the Rich Clusters MS 0839.8+2938, MS 1224.7+2007, and MS 1231.3+1542
journal, March 2000

  • Hutchings, J. B.; Edwards, L.
  • The Astronomical Journal, Vol. 119, Issue 3
  • DOI: 10.1086/301255

IDCS J1426.5+3508: DISCOVERY OF A MASSIVE, INFRARED-SELECTED GALAXY CLUSTER AT z = 1.75
journal, June 2012


simba: Cosmological simulations with black hole growth and feedback
journal, April 2019

  • Davé, Romeel; Anglés-Alcázar, Daniel; Narayanan, Desika
  • Monthly Notices of the Royal Astronomical Society, Vol. 486, Issue 2
  • DOI: 10.1093/mnras/stz937

SPECTROSCOPIC CONFIRMATION OF TWO MASSIVE RED-SEQUENCE-SELECTED GALAXY CLUSTERS AT z ∼ 1.2 IN THE SpARCS-NORTH CLUSTER SURVEY
journal, June 2009


SPT-CL J0205–5829: A z = 1.32 EVOLVED MASSIVE GALAXY CLUSTER IN THE SOUTH POLE TELESCOPE SUNYAEV-ZEL'DOVICH EFFECT SURVEY
journal, January 2013


The Evolution of Early‐Type Galaxies in Distant Clusters
journal, January 1998

  • Stanford, S. A.; Eisenhardt, Peter R.; Dickinson, Mark
  • The Astrophysical Journal, Vol. 492, Issue 2
  • DOI: 10.1086/305050

Cosmic Star Formation History and Its Dependence on Galaxy Stellar Mass
journal, January 2005

  • Juneau, Stéphanie; Glazebrook, Karl; Crampton, David
  • The Astrophysical Journal, Vol. 619, Issue 2
  • DOI: 10.1086/427937

THE MASSIVE AND DISTANT CLUSTERS OF WISE SURVEY. II. INITIAL SPECTROSCOPIC CONFIRMATION OF z ∼ 1 GALAXY CLUSTERS SELECTED FROM 10,000 deg 2
journal, July 2014

  • Stanford, S. A.; Gonzalez, Anthony H.; Brodwin, Mark
  • The Astrophysical Journal Supplement Series, Vol. 213, Issue 2
  • DOI: 10.1088/0067-0049/213/2/25

zCOSMOS 10k-bright spectroscopic sample
journal, November 2010


How to Measure Galaxy Star Formation Histories. II. Nonparametric Models
journal, April 2019

  • Leja, Joel; Carnall, Adam C.; Johnson, Benjamin D.
  • The Astrophysical Journal, Vol. 876, Issue 1
  • DOI: 10.3847/1538-4357/ab133c

REQUIEM-2D Methodology: Spatially Resolved Stellar Populations of Massive Lensed Quiescent Galaxies from Hubble Space Telescope 2D Grism Spectroscopy
journal, September 2020

  • Akhshik, Mohammad; Whitaker, Katherine E.; Brammer, Gabriel
  • The Astrophysical Journal, Vol. 900, Issue 2
  • DOI: 10.3847/1538-4357/abac62

Clusters of Galaxies in the First Half of the Universe from the IRAC Shallow Survey
journal, September 2008

  • Eisenhardt, Peter R. M.; Brodwin, Mark; Gonzalez, Anthony H.
  • The Astrophysical Journal, Vol. 684, Issue 2
  • DOI: 10.1086/590105

An Older, More Quiescent Universe from Panchromatic SED Fitting of the 3D- HST Survey
journal, June 2019

  • Leja, Joel; Johnson, Benjamin D.; Conroy, Charlie
  • The Astrophysical Journal, Vol. 877, Issue 2
  • DOI: 10.3847/1538-4357/ab1d5a

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
  • DOI: 10.1086/670067

REVERSAL OF FORTUNE: CONFIRMATION OF AN INCREASING STAR FORMATION–DENSITY RELATION IN A CLUSTER AT z = 1.62
journal, July 2010


CLEAR. II. Evidence for Early Formation of the Most Compact Quiescent Galaxies at High Redshift
journal, August 2020

  • Estrada-Carpenter, Vicente; Papovich, Casey; Momcheva, Ivelina
  • The Astrophysical Journal, Vol. 898, Issue 2
  • DOI: 10.3847/1538-4357/aba004

Studying the Star Formation Histories of Galaxies in Clusters from Composite Spectra
journal, December 2004

  • Dressler, Alan; Oemler, Jr., Augustus; Poggianti, Bianca M.
  • The Astrophysical Journal, Vol. 617, Issue 2
  • DOI: 10.1086/424890

Nonparametric Star Formation History Reconstruction with Gaussian Processes. I. Counting Major Episodes of Star Formation
journal, July 2019

  • Iyer, Kartheik G.; Gawiser, Eric; Faber, Sandra M.
  • The Astrophysical Journal, Vol. 879, Issue 2
  • DOI: 10.3847/1538-4357/ab2052

The Evolution of Bulge-dominated Field Galaxies fromz≈ 1 to the Present
journal, September 2017

  • Woodrum, Charity; Jørgensen, Inger; Fisher, R. Scott
  • The Astrophysical Journal, Vol. 847, Issue 1
  • DOI: 10.3847/1538-4357/aa8871

On the Infall of Matter Into Clusters of Galaxies and Some Effects on Their Evolution
journal, August 1972

  • Gunn, James E.; Gott, J. Richard, III
  • The Astrophysical Journal, Vol. 176
  • DOI: 10.1086/151605

PISCO: the Parallel Imager for Southern Cosmology Observations
conference, July 2014

  • Stalder, Brian; Stark, Antony A.; Amato, Stephen M.
  • SPIE Astronomical Telescopes + Instrumentation, SPIE Proceedings
  • DOI: 10.1117/12.2054933

THE XMM CLUSTER SURVEY: GALAXY MORPHOLOGIES AND THE COLOR-MAGNITUDE RELATION IN XMMXCS J2215.9 – 1738 AT z = 1.46
journal, May 2009


DEEP NEAR-INFRARED SPECTROSCOPY OF PASSIVELY EVOLVING GALAXIES AT z ≳ 1.4
journal, July 2012


Star formation histories of early-type galaxies at z = 1.2 in cluster and field environments
journal, July 2008


The Faint end of the Cluster-Galaxy Luminosity Function at high Redshift
journal, December 2012


How Well Can We Measure the Stellar Mass of a Galaxy: The Impact of the Assumed Star Formation History Model in SED Fitting
journal, November 2020

  • Lower, Sidney; Narayanan, Desika; Leja, Joel
  • The Astrophysical Journal, Vol. 904, Issue 1
  • DOI: 10.3847/1538-4357/abbfa7

The GOGREEN survey: post-infall environmental quenching fails to predict the observed age difference between quiescent field and cluster galaxies at z  > 1
journal, September 2020

  • Webb, Kristi; Balogh, Michael L.; Leja, Joel
  • Monthly Notices of the Royal Astronomical Society, Vol. 498, Issue 4
  • DOI: 10.1093/mnras/staa2752

HST/WFC3 grism observations of z ∼ 1 clusters: evidence for evolution in the mass–size relation of quiescent galaxies from post-starburst galaxies
journal, March 2020

  • Matharu, J.; Muzzin, A.; Brammer, G. B.
  • Monthly Notices of the Royal Astronomical Society, Vol. 493, Issue 4
  • DOI: 10.1093/mnras/staa610

THE STAR FORMATION HISTORY OF BCGs TO z = 1.8 FROM THE SpARCS/SWIRE SURVEY: EVIDENCE FOR SIGNIFICANT IN SITU STAR FORMATION AT HIGH REDSHIFT
journal, November 2015


Astropy: A community Python package for astronomy
journal, September 2013


The x-ray luminous galaxy cluster population at 0.9 < z ≲ 1.6 as revealed by the XMM- Newton Distant Cluster Project
journal, December 2011


SciPy 1.0: fundamental algorithms for scientific computing in Python
journal, February 2020


STAR-FORMING BRIGHTEST CLUSTER GALAXIES AT 0.25 < z < 1.25: A TRANSITIONING FUEL SUPPLY
journal, January 2016


THE GEMINI CLUSTER ASTROPHYSICS SPECTROSCOPIC SURVEY (GCLASS): THE ROLE OF ENVIRONMENT AND SELF-REGULATION IN GALAXY EVOLUTION AT z ∼ 1
journal, February 2012


Strangulation as the primary mechanism for shutting down star formation in galaxies
journal, May 2015


Mass downsizing and “top-down” assembly of early-type galaxies
journal, June 2006


The population of early-type galaxies at1 < z < 2- new clues on their formation and evolution
journal, January 2009


The Properties of Poor Groups of Galaxies. I. Spectroscopic Survey and Results
journal, March 1998

  • Zabludoff, Ann I.; Mulchaey, John S.
  • The Astrophysical Journal, Vol. 496, Issue 1
  • DOI: 10.1086/305355

First results from the IllustrisTNG simulations: the stellar mass content of groups and clusters of galaxies
journal, December 2017

  • Pillepich, Annalisa; Nelson, Dylan; Hernquist, Lars
  • Monthly Notices of the Royal Astronomical Society, Vol. 475, Issue 1
  • DOI: 10.1093/mnras/stx3112

Evolution of the Stellar Mass–Metallicity Relation. I. Galaxies in the z ∼ 0.4 Cluster Cl0024
journal, March 2018

  • Leethochawalit, Nicha; Kirby, Evan N.; Moran, Sean M.
  • The Astrophysical Journal, Vol. 856, Issue 1
  • DOI: 10.3847/1538-4357/aab26a

The significance probability of the smirnov two-sample test
journal, January 1958


An updated MILES stellar library and stellar population models
journal, July 2011


The Imacs Cluster Building Survey. ii. Spectral Evolution of Galaxies in the Epoch of Cluster Assembly
journal, May 2013

  • Dressler, Alan; Oemler, Augustus; Poggianti, Bianca M.
  • The Astrophysical Journal, Vol. 770, Issue 1
  • DOI: 10.1088/0004-637X/770/1/62

Photometric Redshifts in the IRAC Shallow Survey
journal, November 2006

  • Brodwin, M.; Brown, M. J. I.; Ashby, M. L. N.
  • The Astrophysical Journal, Vol. 651, Issue 2
  • DOI: 10.1086/507838

QUIESCENT GALAXIES IN THE 3D-HST SURVEY: SPECTROSCOPIC CONFIRMATION OF A LARGE NUMBER OF GALAXIES WITH RELATIVELY OLD STELLAR POPULATIONS AT z ∼ 2
journal, June 2013

  • Whitaker, Katherine E.; van Dokkum, Pieter G.; Brammer, Gabriel
  • The Astrophysical Journal, Vol. 770, Issue 2
  • DOI: 10.1088/2041-8205/770/2/L39

RETURN TO [Log-]NORMALCY: RETHINKING QUENCHING, THE STAR FORMATION MAIN SEQUENCE, AND PERHAPS MUCH MORE
journal, November 2016

  • Abramson, Louis E.; Gladders, Michael D.; Dressler, Alan
  • The Astrophysical Journal, Vol. 832, Issue 1
  • DOI: 10.3847/0004-637X/832/1/7

Detailed Decomposition of Galaxy Images. ii. Beyond Axisymmetric Models
journal, April 2010


MOSFIRE Spectroscopy of Quiescent Galaxies at 1.5 < z < 2.5. II. Star Formation Histories and Galaxy Quenching
journal, March 2019

  • Belli, Sirio; Newman, Andrew B.; Ellis, Richard S.
  • The Astrophysical Journal, Vol. 874, Issue 1
  • DOI: 10.3847/1538-4357/ab07af

Galaxy Clusters Discovered via the Sunyaev-Zel'Dovich Effect in the 2500-Square-Degree Spt-Sz Survey
journal, January 2015

  • Bleem, L. E.; Stalder, B.; de Haan, T.
  • The Astrophysical Journal Supplement Series, Vol. 216, Issue 2
  • DOI: 10.1088/0067-0049/216/2/27

The era of star Formation in Galaxy Clusters
journal, December 2013


Spectroscopic Confirmation of Five Galaxy Clusters at z > 1.25 in the 2500 deg 2 SPT-SZ Survey
journal, December 2018


A KINEMATIC APPROACH TO ASSESSING ENVIRONMENTAL EFFECTS: STAR-FORMING GALAXIES IN Az∼ 0.9 SpARCS CLUSTER USINGSPITZER24 μm OBSERVATIONS
journal, April 2013


pygtc: beautiful parameter covariance plots (aka. Giant Triangle Confusograms)
journal, October 2016

  • Bocquet, Sebastian; W. Carter, Faustin
  • The Journal of Open Source Software, Vol. 1, Issue 6
  • DOI: 10.21105/joss.00046

Spectroscopy of galaxies in distant clusters. I - First results for 3C 295 and 0024 + 1654
journal, December 1982

  • Dressler, A.; Gunn, J. E.
  • The Astrophysical Journal, Vol. 263
  • DOI: 10.1086/160524

Mesa Isochrones and Stellar Tracks (Mist). i. Solar-Scaled Models
journal, May 2016


Array programming with NumPy
journal, September 2020

  • Harris, Charles R.; Millman, K. Jarrod; van der Walt, Stéfan J.
  • Nature, Vol. 585, Issue 7825
  • DOI: 10.1038/s41586-020-2649-2

THE VLT LEGA-C SPECTROSCOPIC SURVEY: THE PHYSICS OF GALAXIES AT A LOOKBACK TIME OF 7 Gyr
journal, April 2016

  • van der Wel, A.; Noeske, K.; Bezanson, R.
  • The Astrophysical Journal Supplement Series, Vol. 223, Issue 2
  • DOI: 10.3847/0067-0049/223/2/29

Cosmology with the Sunyaev-Zel’dovich Effect
journal, September 2002


Assembly of the red Sequence in Infrared-Selected Galaxy Clusters from the irac Shallow Cluster Survey
journal, August 2012


IDCS J1433.2+3306: AN INFRARED-SELECTED GALAXY CLUSTER AT z = 1.89
journal, August 2012


The ages and metallicities of galaxies in the local universe
journal, September 2005

  • Gallazzi, Anna; Charlot, Stéphane; Brinchmann, Jarle
  • Monthly Notices of the Royal Astronomical Society, Vol. 362, Issue 1
  • DOI: 10.1111/j.1365-2966.2005.09321.x

The Origin of Star Formation Gradients in Rich Galaxy Clusters
journal, September 2000

  • Balogh, Michael L.; Navarro, Julio F.; Morris, Simon L.
  • The Astrophysical Journal, Vol. 540, Issue 1
  • DOI: 10.1086/309323

STELLAR POPULATIONS FROM SPECTROSCOPY OF A LARGE SAMPLE OF QUIESCENT GALAXIES AT Z > 1: MEASURING THE CONTRIBUTION OF PROGENITOR BIAS TO EARLY SIZE GROWTH
journal, January 2015


The Fundamental Plane for z = 0.8-0.9 Cluster Galaxies
journal, February 2006

  • Jørgensen, Inger; Chiboucas, Kristin; Flint, Kathleen
  • The Astrophysical Journal, Vol. 639, Issue 1
  • DOI: 10.1086/501348

The Evolution of Population Gradients in Galaxy Clusters: The Butcher‐Oemler Effect and Cluster Infall
journal, February 2001

  • Ellingson, E.; Lin, H.; Yee, H. K. C.
  • The Astrophysical Journal, Vol. 547, Issue 2
  • DOI: 10.1086/318423

Inferring the star formation histories of massive quiescent galaxies with bagpipes: evidence for multiple quenching mechanisms
journal, August 2018

  • Carnall, A. C.; McLure, R. J.; Dunlop, J. S.
  • Monthly Notices of the Royal Astronomical Society, Vol. 480, Issue 4
  • DOI: 10.1093/mnras/sty2169

Galaxy populations in the most distant SPT-SZ clusters: I. Environmental quenching in massive clusters at 1.4 ≲
journal, February 2019


Physical properties of SDSS satellite galaxies in projected phase space
journal, January 2019

  • Pasquali, A.; Smith, R.; Gallazzi, A.
  • Monthly Notices of the Royal Astronomical Society, Vol. 484, Issue 2
  • DOI: 10.1093/mnras/sty3530