RedMaPPer: Evolution and Mass Dependence of the Conditional Luminosity Functions of Red Galaxies in Galaxy Clusters
Abstract
In this work we characterize the luminosity distribution, halo-mass dependence, and redshift evolution of red galaxies in galaxy clusters using the SDSS Data Release 8 redMaPPer cluster sample. We propose a simple prescription for the relationship between the luminosity of both red central and red satellite galaxies and the mass of their host halos, and show that this model is well fit by the data. Using a larger galaxy cluster sample than previously employed in the literature, we find that the luminosities of red central galaxies scale as $$\langle \mathrm{log}L\rangle \propto {A}_{L}\mathrm{log}({M}_{200b})$$, with A L = 0.39 ± 0.04, and that the scatter of the red central galaxy luminosity at fixed M 200b ($${\sigma }_{\mathrm{log}L| M}$$) is $${0.23}_{-0.04}^{+0.05}$$ dex, with the error bar including systematics due to mis-centering of the cluster finder, photometry, and photometric redshift estimation. Our data prefers a positive correlation between the luminosity of red central galaxies and the observed richness of clusters at a fixed halo mass, with an effective correlation coefficient $${d}_{\mathrm{eff}}={0.36}_{-0.16}^{+0.17}$$. The characteristic luminosity of red satellites becomes dimmer from z = 0.3 to z = 0.1 by ~20% after accounting for passive evolution. We estimate the fraction of galaxy clusters where the brightest red galaxy is not the central to be P BNC ~ 20%. We discuss implications of these findings in the context of galaxy evolution and the galaxy–halo connection.
- Authors:
-
[1];
[3];
[1]
- Kavli Inst. for Particle Astrophysics and Cosmology, Stanford, CA (United States); Stanford Univ., CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Univ. of Arizona, Tucson, AZ (United States)
- Kavli Inst. for Particle Astrophysics and Cosmology, Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Publication Date:
- Research Org.:
- Stanford Univ., CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); Research Corporation for Science Advancement; Alfred P. Sloan Foundation
- OSTI Identifier:
- 1637543
- Alternate Identifier(s):
- OSTI ID: 1647023
- Grant/Contract Number:
- AC02-76SF00515; SC0015975; PHY-1607611
- Resource Type:
- Accepted Manuscript
- Journal Name:
- The Astrophysical Journal (Online)
- Additional Journal Information:
- Journal Name: The Astrophysical Journal (Online); Journal Volume: 897; 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; Galaxy evolution (594); Large-scale structure of the universe (902); Galaxy dark matter halos (1880); Galaxy clusters (584)
Citation Formats
To, Chun-Hao, Reddick, Rachel M., Rozo, Eduardo, Rykoff, Eli, and Wechsler, Risa H. RedMaPPer: Evolution and Mass Dependence of the Conditional Luminosity Functions of Red Galaxies in Galaxy Clusters. United States: N. p., 2020.
Web. doi:10.3847/1538-4357/ab9636.
To, Chun-Hao, Reddick, Rachel M., Rozo, Eduardo, Rykoff, Eli, & Wechsler, Risa H. RedMaPPer: Evolution and Mass Dependence of the Conditional Luminosity Functions of Red Galaxies in Galaxy Clusters. United States. https://doi.org/10.3847/1538-4357/ab9636
To, Chun-Hao, Reddick, Rachel M., Rozo, Eduardo, Rykoff, Eli, and Wechsler, Risa H. Mon .
"RedMaPPer: Evolution and Mass Dependence of the Conditional Luminosity Functions of Red Galaxies in Galaxy Clusters". United States. https://doi.org/10.3847/1538-4357/ab9636. https://www.osti.gov/servlets/purl/1637543.
@article{osti_1637543,
title = {RedMaPPer: Evolution and Mass Dependence of the Conditional Luminosity Functions of Red Galaxies in Galaxy Clusters},
author = {To, Chun-Hao and Reddick, Rachel M. and Rozo, Eduardo and Rykoff, Eli and Wechsler, Risa H.},
abstractNote = {In this work we characterize the luminosity distribution, halo-mass dependence, and redshift evolution of red galaxies in galaxy clusters using the SDSS Data Release 8 redMaPPer cluster sample. We propose a simple prescription for the relationship between the luminosity of both red central and red satellite galaxies and the mass of their host halos, and show that this model is well fit by the data. Using a larger galaxy cluster sample than previously employed in the literature, we find that the luminosities of red central galaxies scale as $\langle \mathrm{log}L\rangle \propto {A}_{L}\mathrm{log}({M}_{200b})$, with A L = 0.39 ± 0.04, and that the scatter of the red central galaxy luminosity at fixed M 200b (${\sigma }_{\mathrm{log}L| M}$) is ${0.23}_{-0.04}^{+0.05}$ dex, with the error bar including systematics due to mis-centering of the cluster finder, photometry, and photometric redshift estimation. Our data prefers a positive correlation between the luminosity of red central galaxies and the observed richness of clusters at a fixed halo mass, with an effective correlation coefficient ${d}_{\mathrm{eff}}={0.36}_{-0.16}^{+0.17}$. The characteristic luminosity of red satellites becomes dimmer from z = 0.3 to z = 0.1 by ~20% after accounting for passive evolution. We estimate the fraction of galaxy clusters where the brightest red galaxy is not the central to be P BNC ~ 20%. We discuss implications of these findings in the context of galaxy evolution and the galaxy–halo connection.},
doi = {10.3847/1538-4357/ab9636},
journal = {The Astrophysical Journal (Online)},
number = 1,
volume = 897,
place = {United States},
year = {Mon Jun 29 00:00:00 EDT 2020},
month = {Mon Jun 29 00:00:00 EDT 2020}
}
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