2020AJ....160...87Y

Query : 2020AJ....160...87Y

2020AJ....160...87Y - Astron. J., 160, 87-87 (2020/August-0)

The -12 mag dip in the galaxy luminosity function of Hickson Compact Groups.

YAMANOI H., YAGI M., KOMIYAMA Y. and KODA J.

Abstract (from CDS):

We present the galaxy luminosity functions (LFs) of four Hickson Compact Groups using image data from the Subaru Hyper Suprime-Cam. A distinct dip appeared in the faint ends of all the LFs at Mg ∼ -12. A similar dip was observed in the LFs of the galaxy clusters Coma and Centaurus. However, LFs in the Virgo, Hydra, and the field had flatter slopes and no dips. As the relative velocities among galaxies are lower in compact groups than in clusters, the effect of galaxy-galaxy interactions would be more significant in compact groups. The Mg ∼ -12 dip of compact groups may imply that frequent galaxy-galaxy interactions would affect the evolution of galaxies, and the dip in LF could become a boundary between different galaxy populations.

Abstract Copyright: © 2020. The American Astronomical Society. All rights reserved.

Journal keyword(s): Hickson compact group - Luminosity function - Dwarf galaxies

Simbad objects: 15

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Number of rows : 15
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 HCG 16 CGG 02 09 40.82 -10 11 02.0           ~ 175 0
2 HCG 19 CGG 02 42 45 -12 24.7           ~ 37 0
3 ACO S 373 ClG 03 38 29.4 -35 27 08           ~ 2029 0
4 HCG 30 CGG 04 36.5 -02 49           ~ 45 0
5 HCG 31 CGG 05 01 37 -04 15.4           ~ 132 0
6 HCG 42 CGG 10 00 13.1 -19 38 24           ~ 100 0
7 HCG 44 CGG 10 18 00 +21 48.7           ~ 86 0
8 NAME Hydra I Cluster ClG 10 36 36.0 -27 31 04           ~ 905 1
9 HCG 59 CGG 11 48 27 +12 43.0           ~ 53 0
10 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
11 ACO 3526 ClG 12 48 49.2 -41 18 17           ~ 1154 2
12 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
13 HCG 68 CGG 13 53 40.9 +40 19 07     12.4     ~ 114 0
14 HCG 79 CGG 15 59 11.605 +20 45 24.66           ~ 117 0
15 NAME Local Group GrG ~ ~           ~ 9325 0

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