Journal
ASTROPHYSICAL JOURNAL
Volume 851, Issue 2, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.3847/1538-4357/aa9bf5
Keywords
galaxies: active; galaxies: clusters: general; galaxies: elliptical and lenticular, cD; galaxies: luminosity function, mass function
Categories
Funding
- Ministry of Science and Technology [MOST 104-2112-M-001-047, MOST 105-2112-M-001-028-MY3]
- Academia Sinica
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) [400738/2014-7]
- World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan
- JSPS KAKENHI [26800093, 15H05892]
- FIRST program from Japanese Cabinet Office
- Ministry of Education, Culture, Sports, Science and Technology (MEXT)
- Japan Society for the Promotion of Science (JSPS)
- Japan Science and Technology Agency (JST)
- Toray Science Foundation
- NAOJ
- Kavli IPMU
- KEK
- ASIAA
- Princeton University
- Planetary Science Division of the NASA Science Mission Directorate [NNX08AR22G]
- National Science Foundation [AST-1238877]
- Grants-in-Aid for Scientific Research [15K17617, 26800093] Funding Source: KAKEN
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The unprecedented depth and area surveyed by the Subaru Strategic Program with the Hyper Suprime-Cam (HSC-SSP) have enabled us to construct and publish the largest distant cluster sample out to z similar to 1 to date. In this exploratory study of cluster galaxy evolution from z = 1 to z = 0.3, we investigate the stellar mass assembly history of brightest cluster galaxies (BCGs), the evolution of stellar mass and luminosity distributions, the stellar mass surface density profile, as well as the population of radio galaxies. Our analysis is the first high-redshift application of the top N richest cluster selection, which is shown to allow us to trace the cluster galaxy evolution faithfully. Over the 230 deg(2) area of the current HSC-SSP footprint, selecting the top 100 clusters in each of the four redshift bins allows us to observe the buildup of galaxy population in descendants of clusters whose z approximate to 1 mass is about 2 x 10(14) M-circle dot. Our stellar mass is derived from a machine-learning algorithm, which is found to be unbiased and accurate with respect to the COSMOS data. We find very mild stellar mass growth in BCGs (about 35% between z = 1 and 0.3), and no evidence for evolution in both the total stellar mass-cluster mass correlation and the shape of the stellar mass surface density profile. We also present the first measurement of the radio luminosity distribution in clusters out to z similar to 1, and show hints of changes in the dominant accretion mode powering the cluster radio galaxies at z similar to 0.8.
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