2012MNRAS.425..841L

Query : 2012MNRAS.425..841L

2012MNRAS.425..841L - Mon. Not. R. Astron. Soc., 425, 841-861 (2012/September-2)

Stellar population gradients in brightest cluster galaxies.

LOUBSER S.I. and SANCHEZ-BLAZQUEZ P.

Abstract (from CDS):

We present the stellar population and velocity dispersion gradients for a sample of 24 brightest cluster galaxies (BCGs) in the nearby Universe for which we have obtained high-quality long-slit spectra at the Gemini telescopes. With the aim of studying the possible connection between the formation of the BCGs and their host clusters, we explore the relations between the stellar population gradients and properties of the host clusters, as well as the possible connections between the stellar population gradients and other properties of the galaxies. We find mean stellar population gradients (negative Δ[Z/H]/logr gradient of -0.285±0.064, small positive Δlog (age)/logr gradient of 0.069±0.049 and null Δ[E/Fe]/logr gradient of -0.008±0.032) that are consistent with those of normal massive elliptical galaxies. However, we find a trend between metallicity gradients and velocity dispersion (with a negative slope of -1.616±0.539) that is not found for the most massive ellipticals. Furthermore, we find trends between the metallicity gradients and K-band luminosities (with a slope of 0.173±0.081) as well as the distance from the BCG to the X-ray peak of the host cluster (with a slope of -7.546±2.752). The latter indicates a possible relation between the formation of the cluster and that of the central galaxy.

Abstract Copyright: 2012 The Authors Monthly Notices of the Royal Astronomical Society 2012 RAS

Journal keyword(s): galaxies: elliptical and lenticular, cD - galaxies: evolution - galaxies: stellar content

Simbad objects: 49

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Number of rows : 49
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 LEDA 4072 G 01 08 50.8 -15 24 29   14.75       ~ 9 0
2 ACO 151 ClG 01 08 52.3 -15 25 01           ~ 199 1
3 ACO 2877 ClG 01 09 49.3 -45 54 02           ~ 160 2
4 IC 1633 rG 01 09 55.5490585560 -45 55 52.102562844   12.23       ~ 93 3
5 ACO 189 ClG 01 23 40.4 +01 38 38           ~ 103 1
6 NGC 533 rG 01 25 31.4074984248 +01 45 33.236656812   13.1 14.11     ~ 237 1
7 NGC 541 AGN 01 25 44.3069825040 -01 22 46.086331044 13.42 13.03 12.08     ~ 219 2
8 ACO 194 ClG 01 26 01.3 -01 22 02           ~ 363 2
9 ACO 376 ClG 02 45 48 +36 51.6           B8.5 161 1
10 MCG+06-07-004 BiC 02 46 03.9460542576 +36 54 18.840411612   15.50       ~ 46 1
11 NGC 1399 rG 03 38 29.083 -35 27 02.67 11.05 9.74 9.59 8.12   ~ 1636 1
12 MCG-06-10-002 rG 04 13 58.7325830136 -38 05 50.064366876   15.19   13.40   ~ 33 0
13 RXC J0413.9-3805 ClG 04 13 58.8 -38 05 53           ~ 24 0
14 MCG-02-12-039 rG 04 33 37.8465077496 -13 15 42.989961204   13.95 14.22     ~ 104 2
15 MCG-03-13-025 BiC 04 54 52.262 -18 06 56.12   13.34   11.64   ~ 66 1
16 CAN 28 ClG 04 54 52.318 -18 06 56.52           ~ 32 0
17 CAN 27 ClG 04 58.8 -00 28           ~ 12 0
18 NGC 1713 Sy2 04 58 54.6092804904 -00 29 20.290542972   13.88       ~ 65 0
19 ACO 548 ClG 05 47 01.7 -25 36 59           B8 209 2
20 MCG-04-14-033 BiC 05 48 38.3525613720 -25 28 40.090047312   14.02       ~ 41 0
21 NGC 2832 LIN 09 19 46.853 +33 44 59.07   13.3 13.17     ~ 274 3
22 ACO 779 ClG 09 20 02.70 +33 45 29.7           ~ 261 0
23 Z 8-75 BiC 10 13 38.2582731024 -00 55 31.510821720   13.68       ~ 71 2
24 ACO 957 ClG 10 14 02.35 -00 53 30.0           ~ 225 2
25 MCG-01-27-002 BiC 10 20 26.587 -06 31 34.71   15.223   13.874   ~ 26 0
26 ACO 978 ClG 10 20 26.66 -06 31 37.5           ~ 126 1
27 NAME Hydra I Cluster ClG 10 36 36.0 -27 31 04           ~ 905 1
28 NGC 3311 EmG 10 36 42.821 -27 31 42.02   11.93 10.93 10.00 9.67 ~ 310 2
29 NGC 4839 BiC 12 57 24.3563164776 +27 29 52.203087132 13.56 13.02 12.06     ~ 482 3
30 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
31 2MASX J13530637+0508586 BiC 13 53 06.3979419960 +05 08 59.034710652   15.30       ~ 37 1
32 ACO 1809 ClG 13 53 07.68 +05 08 32.7           ~ 179 0
33 ACO 1837 ClG 14 01 36.2 -11 07 48           ~ 106 0
34 LEDA 94244 EmG 14 01 36.3752546016 -11 07 43.633813296   14.87   13.48   ~ 24 0
35 ACO 2197 ClG 16 27 48.01 +40 58 04.5           ~ 290 0
36 NGC 6173 LIN 16 29 44.8864037664 +40 48 41.890972320   14.0       ~ 180 0
37 NGC 6269 rG 16 57 58.1011343880 +27 51 15.883449192   14.4 13.73     ~ 109 1
38 AWM 5 ClG 16 58 00.8 +27 51 16     14.00     ~ 66 0
39 ACO S 805 ClG 18 47 14.4 -63 19 45           ~ 137 3
40 IC 4765 rG 18 47 18.150 -63 19 52.14   12.33 11.36 10.53 10.75 ~ 88 2
41 NGC 7012 GiG 21 06 45.5157195024 -44 48 52.793246088   13.67   12.03   ~ 22 0
42 ACO S 921 ClG 21 06 49 -44 49.9           ~ 8 0
43 ESO 146-28 G 22 28 51.0804230352 -60 52 55.480031148   14.02 12.90 12.62   ~ 26 0
44 BAX 337.2125-60.8811 ClG 22 28 51.3 -60 53 56           ~ 11 0
45 ACO 4038 ClG 23 47 31.1 -28 12 10           ~ 349 3
46 IC 5358 rG 23 47 45.1086508608 -28 08 26.650470372   13.42 14.72 11.99   ~ 88 1
47 ACO 2670 ClG 23 54 10.51 -10 23 06.8           ~ 364 0
48 2MASX J23541371-1025084 LIN 23 54 13.6827414192 -10 25 08.481024912   15.32       ~ 55 2
49 MCG-06-01-008 QSO 23 57 00.7406438328 -34 45 32.994968292   13.89 13.26 12.19   ~ 131 2

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