2016A&A...592A.161N


C.D.S. - SIMBAD4 rel 1.7 - 2019.07.19CEST08:51:20

2016A&A...592A.161N - Astronomy and Astrophysics, volume 592A, 161-161 (2016/8-1)

Stellar mass function of cluster galaxies at z ∼ 1.5: evidence for reduced quenching efficiency at high redshift.

NANTAIS J.B., VAN DER BURG R.F.J., LIDMAN C., DEMARCO R., NOBLE A., WILSON G., MUZZIN A., FOLTZ R., DEGROOT A. and COOPER M.C.

Abstract (from CDS):

We present the stellar mass functions (SMFs) of passive and star-forming galaxies with a limiting mass of 10^10.1M in four spectroscopically confirmed Spitzer Adaptation of the Red-sequence Cluster Survey (SpARCS) galaxy clusters at 1.37<z<1.63. The clusters have 113 spectroscopically confirmed members combined, with 8-45 confirmed members each. We construct Ks-band-selected photometric catalogs for each cluster with an average of 11 photometric bands ranging from u to 8µm. We compare our cluster galaxies to a field sample derived from a similar Ks-band-selected catalog in the UltraVISTA/COSMOS field. The SMFs resemble those of the field, but with signs of environmental quenching. We find that 30±20% of galaxies that would normally be forming stars in the field are quenched in the clusters. The environmental quenching efficiency shows little dependence on projected cluster-centric distance out to ∼4Mpc, providing tentative evidence of pre-processing and/or galactic conformity in this redshift range. We also compile the available data on environmental quenching efficiencies from the literature, and find that the quenching efficiency in clusters and in groups appears to decline with increasing redshift in a manner consistent with previous results and expectations based on halo mass growth.

Abstract Copyright: © ESO, 2016

Journal keyword(s): galaxies: clusters: general - galaxies: evolution

Simbad objects: 5

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Number of rows : 5

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 SpARCS J022426-032331 ClG 02 24 26.32 -03 23 30.7           ~ 6 0
2 SpARCS J022545-035517 ClG 02 25 45.55 -03 55 17.1           ~ 5 0
3 SpARCS J033056-284300 ClG 03 30 55.87 -28 42 59.7           ~ 6 0
4 SpARCS J033504-292855 ClG 03 35 03.58 -29 28 55.6           ~ 3 0
5 NAME COSMOS Field reg 10 00 28.60 +02 12 21.0           ~ 1824 0

    Equat.    Gal    SGal    Ecl

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2019.07.19-08:51:20

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