2017ApJ...834..109M


C.D.S. - SIMBAD4 rel 1.7 - 2020.01.28CET18:17:58

2017ApJ...834..109M - Astrophys. J., 834, 109-109 (2017/January-2)

Isophote shapes of early-type galaxies in massive clusters at z ∼ 1 and 0.

MITSUDA K., DOI M., MOROKUMA T., SUZUKI N., YASUDA N., PERLMUTTER S., ALDERING G. and MEYERS J.

Abstract (from CDS):

We compare the isophote shape parameter a4 of early-type galaxies (ETGs) between z ∼ 1 and 0 as a proxy for dynamics to investigate the epoch at which the dynamical properties of ETGs are established, using cluster ETG samples with stellar masses of log(M*/M) 10.5 which have spectroscopic redshifts. We have 130 ETGs from the Hubble Space Telescope Cluster Supernova Survey for z ∼ 1 and 355 ETGs from the Sloan Digital Sky Survey for z ∼ 0. We have developed an isophote shape analysis method, which can be used for high-redshift galaxies and has been carefully compared with published results. We have applied the same method for both the z ∼ 1 and 0 samples. We find similar dependence of the a4 parameter on the mass and size at z ∼ 1 and 0; the main population of ETGs changes from disky to boxy at a critical stellar mass of log(M*/M)∼11.5 with the massive end dominated by boxy. The disky ETG fraction decreases with increasing stellar mass both at z ∼ 1 and 0, and is consistent between these redshifts in all stellar mass bins when the Eddington bias is taken into account. Although uncertainties are large, the results suggest that the isophote shapes and probably dynamical properties of ETGs in massive clusters are already in place at z > 1 and do not significantly evolve in z < 1, despite significant size evolution in the same galaxy population. The constant disky fraction favors less violent processes than mergers as the main cause of the size and morphological evolution of intermediate mass ETGs in z < 1.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: clusters: general - galaxies: elliptical and lenticular, cD - galaxies: evolution - galaxies: photometry - galaxies: structure - galaxies: structure

Simbad objects: 15

goto Full paper

goto View the reference in ADS

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 - 2020
#notes
1 ACO 119 ClG 00 56 16.8 -01 15 00           ~ 510 2
2 ClG J0848+4453 ClG 08 48 34.800 +44 53 41.90           ~ 121 1
3 ClG J0910+5422 ClG 09 10 44.9 +54 22 09           ~ 85 0
4 ACO 1367 ClG 11 44 44.6 +19 41 59           ~ 978 1
5 NAME NGC 4073 Group GrG 12 04 21.7 +01 50 19     13.53     ~ 241 0
6 NGC 4697 GiG 12 48 35.8992791100 -05 48 02.497675635   10.97   9.83   ~ 790 0
7 ClG J1252-2927 ClG 12 52 54.4 -29 27 17           ~ 150 0
8 ACO 1656 ClG 12 59 48.7 +27 58 50           ~ 4134 2
9 NAME NGC 5718 Group ClG 14 40 38.5 +03 28 20     14.31     ~ 102 0
10 ACO 2052 ClG 15 16 45.5 +07 00 01           ~ 666 1
11 NAME NGC 5920 Group ClG 15 21 50.7 +07 42 18     15.13     ~ 281 0
12 ACO 2063 ClG 15 23 01.8 +08 38 22           ~ 366 2
13 ACO 2147 ClG 16 02 17.2 +15 53 43           ~ 368 0
14 ACO 2199 ClG 16 28 37.0 +39 31 28           ~ 1088 1
15 ClG J2235-2557 ClG 22 35 20.6 -25 57 42           ~ 135 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2017ApJ...834..109M and select 'bookmark this link' or equivalent in the popup menu


2020.01.28-18:17:58

© Université de Strasbourg/CNRS

    • Contact