The Rest-frame H-band Luminosity Function of Red-sequence Galaxies in Clusters at 1.0 < z < 1.3
AuthorChan, Jeffrey C. C.
Burg, Remco F. J. van der
Cooper, Michael C.
Reeves, Andrew M. M.
Webb, Kristi A.
Yee, Howard K. C.
Abdullah, Mohamed H.
Lucia, Gabriella De
McGee, Sean L.
AffiliationUniv Arizona, Steward Observ
Univ Arizona, Dept Astron
Keywordsgalaxies: clusters: general
galaxies: elliptical and lenticular, cD
galaxies: high redshift
galaxies: luminosity function mass function
MetadataShow full item record
PublisherIOP PUBLISHING LTD
CitationJeffrey C. C. Chan et al 2019 ApJ 880 119
RightsCopyright © 2019. The American Astronomical Society. All rights reserved.
Collection InformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at email@example.com.
AbstractWe present results on the rest-frame H-band luminosity functions (LFs) of red-sequence galaxies in seven clusters at 1.0 < z < 1.3 from the Gemini Observations of Galaxies in Rich Early Environments Survey. Using deep GMOS z' and IRAC 3.6 mu m imaging, we identify red-sequence galaxies and measure their LFs down to M-H similar to M-H* + (2.0 - 3.0) . By stacking the entire sample, we derive a shallow faint-end slope of alpha similar to -0.35(-0.15)(+0.15) and M-H*similar to -23.52(-0.17)(+0.15), suggesting that there is a deficit of faint red-sequence galaxies in clusters at high redshift. By comparing the stacked red-sequence LF of our sample with a sample of clusters at z similar to 0.6, we find an evolution of the faint end of the red sequence over the similar to 2.6 Gyr between the two samples, with the mean faint-end redsequence luminosity growing by more than a factor of 2. The faint-to-luminous ratio of our sample (0.78(-0.15)(+0.19)) is consistent with the trend of decreasing ratio with increasing redshift proposed in previous studies. A comparison with the field shows that the faint-to-luminous ratios in clusters are consistent with those in the field at z similar to 1.15 and exhibit a stronger redshift dependence. Our results support the picture that the buildup of faint red-sequence galaxies occurs gradually over time and suggest that faint cluster galaxies, similar to bright cluster galaxies, already experience the quenching effect induced by the tenvironment at z similar to 1.15.
VersionFinal published version
SponsorsNational Science Foundation [AST-1517863, AST-1518257, AST-1815475]; HST program [GO-13677/14327.01, GO-15294]; NASA Astrophysics Data Analysis Program (ADAP) [80NSSC17K0019]; NASA through Space Telescope Science Institute [GO-13677/14327.01, GO-15294, AR-13242, AR-14289]; NASA [NAS5-26555]; Universidad Andres Bello internal grant [DI-18-17/RG]; FONDECYT ; BASAL Center for Astrophysics and Associated Technologies (CATA) grant [AFB-170002]; JPL/Caltech
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