2011MNRAS.415.3013L

Query : 2011MNRAS.415.3013L

2011MNRAS.415.3013L - Mon. Not. R. Astron. Soc., 415, 3013-3020 (2011/August-3)

Mg2 gradients as a signature of brightest cluster galaxy evolution.

LOUBSER S.I. and SANCHEZ-BLAZQUEZ P.

Abstract (from CDS):

We have fitted the Mg2 absorption index gradients for 21 brightest cluster galaxies (BCGs), in the nearby Universe, for which we have obtained high signal-to-noise ratio, long-slit spectra on the Gemini telescopes. This is a subsample of a large optical, spatially resolved, spectroscopic sample of BCGs which allows possible connections between the kinematical, dynamical and stellar population properties to be studied. We find a weak correlation between the Mg2 gradients and central velocity dispersion, with gradients becoming steeper with increasing mass. An equivalent correlation for normal ellipticals in the same mass range is not found, suggesting that the BCG stellar population profiles are shaped by mechanisms related to the potential well of the cluster where they live. This suggestion is reinforced by the existence of a correlation between the Mg2 gradients and the BCG distance to the X-ray peak luminosity of the cluster.

Abstract Copyright: 2011 The Authors Monthly Notices of the Royal Astronomical Society2011 RAS

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

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 - 2026 		#notes
1 LEDA 4072 G 01 08 50.8 -15 24 29   14.75       ~ 9 0
2 IC 1633 rG 01 09 55.5490585560 -45 55 52.102562844   12.23       ~ 93 3
3 NGC 533 rG 01 25 31.4074984248 +01 45 33.236656812   13.1 14.11     ~ 237 1
4 NGC 541 AGN 01 25 44.3069825040 -01 22 46.086331044 13.42 13.03 12.08     ~ 219 2
5 MCG+06-07-004 BiC 02 46 03.9460542576 +36 54 18.840411612   15.50       ~ 46 1
6 NGC 1399 rG 03 38 29.083 -35 27 02.67 11.05 9.74 9.59 8.12   ~ 1636 1
7 MCG-06-10-002 rG 04 13 58.7325830136 -38 05 50.064366876   15.19   13.40   ~ 33 0
8 RXC J0413.9-3805 ClG 04 13 58.8 -38 05 53           ~ 24 0
9 MCG-02-12-039 rG 04 33 37.8465077496 -13 15 42.989961204   13.95 14.22     ~ 104 2
10 MCG-03-13-025 BiC 04 54 52.262 -18 06 56.12   13.34   11.64   ~ 66 1
11 NGC 1713 Sy2 04 58 54.6092804904 -00 29 20.290542972   13.88       ~ 65 0
12 MCG-04-14-033 BiC 05 48 38.3525613720 -25 28 40.090047312   14.02       ~ 41 0
13 NGC 2832 LIN 09 19 46.853 +33 44 59.07   13.3 13.17     ~ 274 3
14 Z 8-75 BiC 10 13 38.2582731024 -00 55 31.510821720   13.68       ~ 71 2
15 MCG-01-27-002 BiC 10 20 26.587 -06 31 34.71   15.223   13.874   ~ 26 0
16 NGC 3311 EmG 10 36 42.821 -27 31 42.02   11.93 10.93 10.00 9.67 ~ 310 2
17 NGC 4839 BiC 12 57 24.3563164776 +27 29 52.203087132 13.56 13.02 12.06     ~ 482 3
18 2MASX J13530637+0508586 BiC 13 53 06.3979419960 +05 08 59.034710652   15.30       ~ 37 1
19 LEDA 94244 EmG 14 01 36.3752546016 -11 07 43.633813296   14.87   13.48   ~ 24 0
20 NGC 6173 LIN 16 29 44.8864037664 +40 48 41.890972320   14.0       ~ 180 0
21 NGC 6269 rG 16 57 58.1011343880 +27 51 15.883449192   14.4 13.73     ~ 109 1
22 IC 4765 rG 18 47 18.150 -63 19 52.14   12.33 11.36 10.53 10.75 ~ 88 2
23 NGC 7012 GiG 21 06 45.5157195024 -44 48 52.793246088   13.67   12.03   ~ 22 0
24 ESO 146-28 G 22 28 51.0804230352 -60 52 55.480031148   14.02 12.90 12.62   ~ 26 0
25 IC 5358 rG 23 47 45.1086508608 -28 08 26.650470372   13.42 14.72 11.99   ~ 88 1
26 2MASX J23541371-1025084 LIN 23 54 13.6827414192 -10 25 08.481024912   15.32       ~ 55 2
27 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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