2006A&A...458..717R


Query : 2006A&A...458..717R

2006A&A...458..717R - Astronomy and Astrophysics, volume 458, 717-726 (2006/11-2)

Comparing dynamical and photometric-stellar masses of early-type galaxies at z∼1.

RETTURA A., ROSATI P., STRAZZULLO V., DICKINSON M., FOSBURY R.A.E., ROCCA-VOLMERANGE B., CIMATTI A., DI SEREGO ALIGHIERI S., KUNTSCHNER H., LANZONI B., NONINO M., POPESSO P., STERN D., EISENHARDT P.R., LIDMAN C. and STANFORD S.A.

Abstract (from CDS):

The purpose of this study is to explore the relationship between galaxy stellar masses, based on multiwavelength photometry spectral template fitting and dynamical masses based on published velocity dispersion measurements, for a sample of 48 early-type galaxies at z∼1 with HST/ACS morphological information. We determine photometric-stellar masses and perform a quantitative morphological analysis of cluster and field galaxies at redshift 0.6<z<1.2, using ground- and space-based multiwavelength data available on the GOODS-S field and on the field around the X-ray luminous cluster RDCS1252.9-2927 at z=1.24. We use multi-band photometry over 0.4-8µm from HST/ACS, VLT/ISAAC and Spitzer/IRAC to estimate photometric-stellar masses using Composite Stellar Population (CSP) templates computed with PEGASE.2 (Fioc & Rocca-Volmerange, 1997A&A...326..950F) models. We compare stellar masses with those obtained using CSPs built with Bruzual & Charlot (2003MNRAS.344.1000B; BC03) and Maraston (2005MNRAS.362..799M; M05) models. We then compare photometric-stellar mass and dynamical mass estimates as a function of morphological parameters obtained from HST/ACS imaging. Based on our sample, which spans the mass range logMphot≃[10,11.5], we find that 1) PEGASE.2, BC03, M05 yield consistent photometric-stellar masses for early-type galaxies at z∼1 with a small scatter (0.15dex rms); 2) adopting a Kroupa IMF, photometric-stellar masses match dynamical mass estimates for early-type galaxies with an average offset of 0.27dex; 3) assuming a constant IMF, increasing dark matter fraction with the increasing galaxy mass can explain the observed trend; 4) we observe that early-type galaxies with significant disk components (Sa/Sab) or with signs of dynamical interaction tend to have the largest deviation from a one-to-one Mdyn vs. Mphot relatio

Abstract Copyright:

Journal keyword(s): galaxies: clusters: individual: RDCS J1252-2927 - galaxies: evolution - galaxies: formation - galaxies: elliptical and lenticular, cD - Galaxy: kinematics and dynamics - cosmology: observations

Simbad objects: 50

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Number of rows : 50
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 NAME CDFS-Cl1 AGN 03 32 09.716 -27 42 48.43   21.015   21.96 21.0708 ~ 62 0
2 EIS-DEEP CDFS-1 Ks 1 910 GiP 03 32 10.038 -27 43 33.11   22.6685 23.92 25.44 22.3083 ~ 23 0
3 EIS-DEEP CDFS-1 J 1 551 G 03 32 11.212 -27 45 33.51   26.00 24.62 23.92 23.2408 ~ 17 0
4 EIS-DEEP CDFS-3 J 1 118 G 03 32 17.4796 -27 52 48.000   26.5679     22.9002 ~ 14 0
5 GOODS-MUSIC 17237 G 03 32 17.911 -27 41 22.70   24.104   27.42 23.0278 ~ 21 0
6 GOODS-MUSIC 17839 G 03 32 19.1468 -27 40 40.219   25.5015     22.2613 ~ 11 0
7 CXOCDFS J033219.2-275406 G 03 32 19.27879 -27 54 06.0541   20.868   22.174 20.938 ~ 32 0
8 EIS-DEEP CDFS-3 J 1 1593 G 03 32 19.310 -27 52 19.52 27.45 25.9147 25.79 23.8343 23.1215 ~ 28 0
9 ZFOURGE CDFS 25578 G 03 32 19.591 -27 43 03.81   24.9763   21.872 21.5288 ~ 18 0
10 EIS-DEEP CDFS-3 Ks 1 662 G 03 32 20.2801 -27 52 33.015   26.295 24.42   23.1540 ~ 16 0
11 GOODS J033221.36-274026.1 G 03 32 21.3600 -27 40 26.086   23.3878   23.09 22.4531 ~ 10 0
12 GOODS-MUSIC 1382 G 03 32 22.9265 -27 54 34.343   25.200   22.37 21.5576 ~ 22 0
13 ZFOURGE CDFS 5661 G 03 32 23.61516 -27 53 06.2984   24.241   26.16 23.3468 ~ 16 0
14 CXOCDFS J033224.7-274011 AGN 03 32 24.5444 -27 40 10.432   24.5157 24.03 23.29 22.5365 ~ 33 0
15 ACS-GC 90040981 Sy2 03 32 25.157 -27 54 50.10   23.166   23.17 22.1691 ~ 61 0
16 EIS-DEEP CDFS-1 J 1 639 G 03 32 26.2654 -27 45 50.728   26.5376   24.35 23.7766 ~ 20 0
17 ACS-GC 90046163 AGN 03 32 26.2927 -27 45 36.186   25.3760   23.97 23.2588 ~ 33 0
18 GOODS-MUSIC 1950 G 03 32 26.2940 -27 54 05.041   25.2414 22.7565   22.7650 ~ 23 0
19 GOODS-MUSIC 17827 G 03 32 27.700 -27 40 43.70   26.0252   23.334 22.4876 ~ 21 0
20 NAME GOODS Southern Field reg 03 32 28.0 -27 48 30           ~ 1237 1
21 CXOCDFS J033229.3-274708 G 03 32 29.209 -27 47 07.57   24.6354 23.19 21.839 20.827 ~ 42 0
22 GOODS J033230.19-273930.2 G 03 32 30.19440 -27 39 30.3264   23.029   21.479 22.0936 ~ 12 0
23 EIS-DEEP CDFS-4 J 1 27 G 03 32 31.37038 -27 53 19.0720   23.128 23.567 22.831 22.1571 ~ 24 0
24 EIS-DEEP CDFS-2 J 1 329 AGN 03 32 32.0408 -27 44 51.735   25.2464   22.90 21.998 ~ 33 0
25 CXOCDFS J033232.7-274547 EmG 03 32 32.7124 -27 45 47.462   20.5481 22.657 22.2277 21.249 ~ 33 0
26 GEMS J033232.98-274117.1 AGN 03 32 32.984 -27 41 17.06   24.178   22.660 21.7520 ~ 31 0
27 EIS-DEEP CDFS-2 Ks 1 334 G 03 32 33.818 -27 44 10.02   24.3566 23.3651 22.272 21.5276 ~ 27 0
28 GOODS-MUSIC 2198 G 03 32 34.8486 -27 53 50.070   25.4120 23.9134 22.6830 21.8584 ~ 17 0
29 EIS-DEEP CDFS-2 Ks 1 419 EmG 03 32 35.453 -27 44 21.10   25.8289   23.30 22.9424 ~ 21 0
30 EIS-DEEP CDFS-2 J 1 682 G 03 32 37.193 -27 46 08.08 26.2737 25.1755 23.390 22.43 21.436 ~ 48 0
31 ASPECS LP.1mm.C33 G 03 32 38.484 -27 47 02.42 20.8607 24.7566 23.376 22.9487 21.9833 ~ 36 0
32 EIS-DEEP CDFS-4 H 1 289 G 03 32 39.598 -27 49 09.60   25.1032   22.46 21.5971 ~ 34 0
33 [SWM2014] GOODS-S 25053 G 03 32 41.405 -27 47 17.17 26.0967 24.2186 22.359 21.656 21.1531 ~ 39 0
34 [WDK2001] 22239 G 03 32 42.8569 -27 53 24.770   24.6406   21.758 21.0564 ~ 16 0
35 EIS-DEEP CDFS-4 Ks 1 452 G 03 32 45.1488 -27 49 39.956   26.2111 24.8411 23.1990 22.9552 ~ 27 0
36 MUSE-WIDE 121028073 EmG 03 32 54.24 -27 49 04.1   24.65   23.50 22.00 ~ 19 0
37 [VFV2005] CL1252-2 G 12 52 42.3588 -29 27 47.311           ~ 3 0
38 [DRL2007] 355 G 12 52 42.4793 -29 27 03.589           ~ 4 0
39 [DRL2007] 1 G 12 52 45.8899 -29 29 04.578           ~ 5 0
40 [VFV2005] CL1252-4 G 12 52 48.5594 -29 27 23.245           ~ 2 0
41 ClG J1252-2927 ClG 12 52 54.4 -29 27 17           ~ 155 0
42 [VFV2005] CL1252-6 G 12 52 56.40 -29 26 22.6           ~ 5 0
43 [VFV2005] CL1252-5 G 12 52 58.52 -29 28 39.3           ~ 7 0
44 [DRL2007] 217 G 12 53 03.6396 -29 27 42.592           ~ 5 0
45 [VFV2005] CL1252-8 G 12 53 05.13 -29 26 29.9           ~ 5 0
46 [VFV2005] CL1252-9 G 12 53 05.6213 -29 26 32.561           ~ 3 0
47 [HVF2005] 6106 GiC ~ ~           ~ 2 0
48 [HVF2005] 4419 GiC ~ ~           ~ 2 0
49 [HVF2005] 9077 GiC ~ ~           ~ 2 0
50 [HVF2005] 4420 GiC ~ ~           ~ 2 0

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2023.02.01-19:21:42

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