2016MNRAS.457.1242F


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.12CEST15:02:38

2016MNRAS.457.1242F - Mon. Not. R. Astron. Soc., 457, 1242-1256 (2016/April-1)

The SLUGGS survey: the assembly histories of individual early-type galaxies.

FORBES D.A., ROMANOWSKY A.J., PASTORELLO N., FOSTER C., BRODIE J.P., STRADER J., USHER C. and POTA V.

Abstract (from CDS):

Early-type (E and S0) galaxies may have assembled via a variety of different evolutionary pathways. Here, we investigate these pathways by comparing the stellar kinematic properties of 24 early-type galaxies from the SAGES Legacy Unifying Globulars and GalaxieS (SLUGGS) survey with the hydrodynamical simulations of Naab et al. In particular, we use the kinematics of starlight up to 4 effective radii (Re) as diagnostics of galaxy inner and outer regions, and assign each galaxy to one of six Naab et al. assembly classes. The majority of our galaxies (14/24) have kinematic characteristics that indicate an assembly history dominated by gradual gas dissipation and accretion of many gas-rich minor mergers. Three galaxies, all S0s, indicate that they have experienced gas-rich major mergers in their more recent past. One additional elliptical galaxy is tentatively associated with a gas-rich merger which results in a remnant galaxy with low angular momentum. Pathways dominated by gas-poor (major or minor) mergers dominate the mass growth of six galaxies. Most SLUGGS galaxies appear to have grown in mass (and size) via the accretion of stars and gas from minor mergers, with late major mergers playing a much smaller role. We find that the fraction of accreted stars correlates with the stellar mean age and metallicity gradient, but not with the slope of the total mass density profile. We briefly mention future observational and modelling approaches that will enhance our ability to accurately reconstruct the assembly histories of individual present-day galaxies.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): galaxies: elliptical and lenticular, cD - galaxies: evolution - galaxies: formation - galaxies: kinematics and dynamics

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 - 2020
#notes
1 NGC 720 GiG 01 53 00.523 -13 44 19.25   12.4   10.36   ~ 493 0
2 NGC 821 G 02 08 21.150 +10 59 41.53   12.210 11.310 10.739 9.744 ~ 538 0
3 NGC 1023 IG 02 40 24.012 +39 03 47.70 10.91 10.35 9.35 7.83   ~ 601 2
4 NGC 1400 EmG 03 39 30.851 -18 41 17.25 12.48 12.01 10.96 10.45   ~ 280 1
5 NGC 1407 GiG 03 40 11.904 -18 34 49.36   10.64 9.67 9.13   ~ 527 1
6 NGC 2768 SyG 09 11 37.504 +60 02 13.95 11.30 10.84 9.87     ~ 467 2
7 NGC 2974 Sy2 09 42 33.267 -03 41 56.82   12.19   10.77   ~ 410 0
8 NGC 3115 GiG 10 05 13.978 -07 43 06.89   11   9.37   ~ 928 2
9 NGC 3377 GiP 10 47 42.400 +13 59 08.30 11.55 11.24 10.38     ~ 730 1
10 [VV2006] J111654.8+180304 QSO 11 16 54.657 +18 03 06.51   13.84 12.76     ~ 435 0
11 NGC 3608 LIN 11 16 58.967 +18 08 54.71   11.7       ~ 475 0
12 NGC 4111 GiP 12 07 03.127 +43 03 55.41 12.07 11.63 10.74     ~ 305 1
13 NGC 4278 LIN 12 20 06.82563 +29 16 50.7124 11.54 11.09 10.16     ~ 888 2
14 NGC 4365 GiG 12 24 28.228 +07 19 03.07   11.5       ~ 798 0
15 M 84 Sy2 12 25 03.74333 +12 53 13.1393 12.67 12.09 10.49     ~ 1635 2
16 NGC 4459 H2G 12 29 00.026 +13 58 42.89   11.6       ~ 493 0
17 NGC 4473 GiG 12 29 48.878 +13 25 45.55 11.60 11.16 10.20     ~ 602 1
18 NGC 4474 GiG 12 29 53.544 +14 04 07.22   12.6       ~ 244 0
19 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6213 3
20 NGC 4494 GiP 12 31 24.034 +25 46 29.93   10.55 9.74     ~ 451 0
21 NGC 4526 GiG 12 34 03.029 +07 41 56.90   10.6       ~ 600 1
22 NGC 4564 GiG 12 36 26.994 +11 26 21.55 12.51 12.05 11.12     ~ 561 1
23 M 60 GiP 12 43 40.008 +11 33 09.40   10.3       ~ 1251 0
24 NGC 4697 GiG 12 48 35.8992791100 -05 48 02.497675635   10.97   9.83   ~ 804 0
25 NGC 5846 BiC 15 06 29.253 +01 36 20.29   11.9   9.74   ~ 772 1
26 M 102 SyG 15 06 29.561 +55 45 47.91 11.12 10.74 9.89     ~ 502 3
27 NGC 7457 G 23 00 59.9274269967 +30 08 41.794468187   11.04 11.87     ~ 409 0

    Equat.    Gal    SGal    Ecl

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2020.07.12-15:02:38

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