2008MNRAS.385..361S


Query : 2008MNRAS.385..361S

2008MNRAS.385..361S - Mon. Not. R. Astron. Soc., 385, 361-380 (2008/March-3)

The connection between globular cluster systems and their host galaxy and environment: a case study of the isolated elliptical NGC 821.

SPITLER L.R., FORBES D.A., STRADER J., BRODIE J.P. and GALLAGHER III J.S.

Abstract (from CDS):

In an effort to probe the globular cluster (GC) system of an isolated elliptical galaxy, a comprehensive analysis of the NGC 821 GC system was performed. New imaging from the WIYN Mini-Mosaic imager, supplemented with Hubble Space Telescope (HST) WFPC2 images reveals a GC system similar to those found in counterpart ellipticals located in high-density environments. To put these results into the context of galaxy formation, a robustly determined census of GC systems is presented and analysed for galaxies spanning a wide range of masses (> M*), morphologies and environments.

Results from this meta-study: (1) confirm previous findings that the number of GCs normalized by host galaxy stellar mass increases with host stellar mass. Spiral galaxies in the sample show smaller relative GC numbers than those of massive ellipticals, suggesting the GC systems of massive ellipticals were not formed from major spiral-spiral mergers; (2) indicate that GC system numbers per unit galaxy baryon mass increases with host baryon mass and that GC formation efficiency may not be universal as previously thought; (3) suggest previously reported trends with environment may be incorrect due to sample bias or the use of galaxy stellar masses to normalize GC numbers. Thus claims for environmentally dependent GC formation efficiencies should be revisited; (4) in combination with weak-lensing halo mass estimates, suggest that GCs formed in direct proportion to the halo mass; (5) are consistent with theoretical predictions whereby the local epoch of reionization did not vary significantly with environment or host galaxy type.


Abstract Copyright: 2008 The Authors. Journal compilation © 2008 RAS

Journal keyword(s): globular clusters: individual: NGC 821 - galaxies: elliptical and lenticular, cD - galaxies: evolution - galaxies: formation - galaxies: star clusters - early Universe

VizieR on-line data: <Available at CDS (J/MNRAS/385/361): table4.dat>

Nomenclature: Table 4: [SFS2008] NNN (Nos 1-306). Table 5: [SFS2008] JHHMMSS.sss+DDMMSS.ss N=4.

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 27

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Number of rows : 27
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 NGC 7814 GiG 00 03 14.947 +16 08 42.82   12.0       ~ 274 0
2 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 11831 1
3 NGC 821 G 02 08 21.1358498040 +10 59 41.832436704   12.210 11.310 10.739 9.744 ~ 555 0
4 NGC 1052 GiP 02 41 04.7997864552 -08 15 20.761481016 11.84 11.41 10.47 10.71   ~ 1229 2
5 NGC 1379 GiP 03 36 03.9668625792 -35 26 28.547476800 12.17 12.04 10.91 10.60   ~ 250 1
6 NGC 1387 GiP 03 36 57.0337458600 -35 30 23.675934060 12.18 11.75 10.69 10.16   ~ 237 1
7 NGC 1399 BiC 03 38 29.083 -35 27 02.67 11.05 9.74 9.59 8.12   ~ 1512 1
8 ACO S 373 ClG 03 38 30 -35 27.3           ~ 1693 0
9 NGC 1407 GiG 03 40 11.904 -18 34 49.36   10.64 9.67 9.13   ~ 554 1
10 NGC 1427 GiG 03 42 19.4455150392 -35 23 33.169251120   11.89   10.44   ~ 261 0
11 NGC 2683 AGN 08 52 41.3064829584 +33 25 18.597681516 11.57 10.68 9.79 9.38   ~ 412 1
12 NGC 3258 BiC 10 28 53.588 -35 36 19.98   12.50 11.72 10.86   ~ 176 0
13 ACO S 636 ClG 10 29 41.0957 -35 19 32.908           ~ 212 0
14 NGC 3268 BiC 10 30 00.6490581240 -35 19 31.519591284   12.57 11.77 10.68   ~ 144 0
15 M 105 LIN 10 47 49.600 +12 34 53.87   10.56 9.76 9.12 8.18 ~ 1420 0
16 M 108 SBG 11 11 30.967 +55 40 26.84   10.70       ~ 443 1
17 NGC 4157 GiP 12 11 04.365 +50 29 04.85 12.48 12.15 11.35     ~ 327 2
18 M 84 Sy2 12 25 03.74333 +12 53 13.1393 12.67 12.09 10.49     ~ 1698 2
19 M 86 GiG 12 26 11.814 +12 56 45.49 10.32 9.83 8.90   7.50 ~ 1047 1
20 NAME Virgo Cluster ClG 12 26 32.1 +12 43 24           ~ 6269 0
21 M 49 Sy2 12 29 46.798 +08 00 01.48   13.21 12.17     ~ 2026 2
22 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6671 3
23 M 89 LIN 12 35 39.8073444 +12 33 22.830809 11.29 10.73 9.75     ~ 961 2
24 M 104 LIN 12 39 59.4302501832 -11 37 22.988264808 9.51 9.55 8.00 8.05   ~ 1330 3
25 NGC 4636 LIN 12 42 49.8333280080 +02 41 15.951929028   12.62 11.84     ~ 1076 1
26 NAME Centaurus A Sy2 13 25 27.6039817176 -43 01 09.493008456   8.18 6.84 6.66   ~ 4241 3
27 NGC 7331 LIN 22 37 04.0506038088 +34 24 56.800076508 10.65 10.35 9.48     ~ 1169 2

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2022.06.29-08:44:04

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