2005MNRAS.358..813D

Query : 2005MNRAS.358..813D

2005MNRAS.358..813D - Mon. Not. R. Astron. Soc., 358, 813-832 (2005/April-2)

Group, field and isolated early-type galaxies - II. Global trends from nuclear data.

DENICOLO G., TERLEVICH R., TERLEVICH E., FORBES D.A. and TERLEVICH A.

Abstract (from CDS):

We have derived ages, metallicities and enhanced-element ratios [α/Fe] for a sample of 83 early-type galaxies essentially in groups, the field or isolated objects. The stellar-population properties derived for each galaxy correspond to the nuclear re/8 aperture extraction. The median age found for Es is 5.8±0.6 Gyr and the average metallicity is +0.37±0.03 dex. For S0s, the median age is 3.0±0.6 Gyr and [Z/H]= 0.53±0.04 dex. We compare the distribution of our galaxies in the Hβ-[MgFe] diagram with Fornax galaxies. Our elliptical galaxies are 3-4 Gyr younger than Es in the Fornax cluster. We find that the galaxies lie in a plane defined by [Z/H]= 0.99 logσ0- 0.46 log(age) - 1.60, or in linear terms Z ∝σ0x (age) –0.5. More massive (larger σ0) and older galaxies present, on average, large [α/Fe] values, and therefore must have undergone shorter star-formation time-scales. Comparing group against field/isolated galaxies, it is not clear that environment plays an important role in determining their stellar-population history. In particular, our isolated galaxies show ages differing by more than 8 Gyr. Finally we explore our large spectral coverage to derive log(O/H) metallicity from the Hα and NIIλ6584 and compare it with model-dependent [Z/H]. We find that the O/H abundances are similar for all galaxies, and we can interpret it as if most chemical evolution has already finished in these galaxies.

Abstract Copyright: 2005 RAS

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

Simbad objects: 92

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Number of rows : 92
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 NGC 16 AG? 00 09 04.2759835008 +27 43 45.873678864   13.01 12.06     ~ 76 0
2 M 32 GiG 00 42 41.82480 +40 51 54.6120 9.51 9.03 8.08     ~ 2236 2
3 MCG-01-03-018 Sy1 00 50 27.521 -05 51 30.65   13   12.66   ~ 27 0
4 NGC 315 LIN 00 57 48.88334410 +30 21 08.8119345 12.80 12.20 11.16 11.26   ~ 869 2
5 NGC 474 GiP 01 20 06.6870520512 +03 24 55.861973100 12.75 12.37 11.51 11.42 10.56 ~ 371 1
6 NGC 584 Sy2 01 31 20.7231919800 -06 52 04.770287472 11.93 11.44 10.48     ~ 417 2
7 BAX 028.2522-13.7387 ClG 01 53 00.40 -13 44 18.0           ~ 389 0
8 NGC 720 Sy1 01 53 00.523 -13 44 19.25   12.4   10.36   ~ 536 0
9 NGC 750 GiP 01 57 32.7005060832 +33 12 33.702836112   12.9       ~ 69 0
10 NGC 751 GiP 01 57 32.99 +33 12 11.1   12.9       ~ 59 0
11 NGC 777 BLL 02 00 14.9065707744 +31 25 45.850721628 13.09 12.49 11.45     ~ 195 2
12 NGC 821 AG? 02 08 21.1358498040 +10 59 41.832436704   12.210 11.310 10.739 9.744 ~ 592 0
13 NGC 890 GiG 02 22 01.0021097064 +33 15 57.770822916   12.5 11.62     ~ 116 0
14 NGC 1045 Sy2 02 40 29.1212142384 -11 16 39.204299784   13   11.92   ~ 34 0
15 NGC 1052 Bla 02 41 04.79849989 -08 15 20.7519527 11.84 11.41 10.47 10.71   ~ 1397 2
16 BAX 043.2159-01.2747 ClG 02 52 49.4 -01 16 27           ~ 104 0
17 NGC 1132 EmG 02 52 51.82 -01 16 29.0   13.9   12.16   ~ 180 0
18 ACO S 373 ClG 03 38 29.4 -35 27 08           ~ 2029 0
19 NGC 1407 rG 03 40 11.904 -18 34 49.36   10.64 9.67 9.13   ~ 613 2
20 NGC 1453 EmG 03 46 27.2307890592 -03 58 07.831476768   13   11.30   ~ 189 0
21 NGC 1600 rG 04 31 39.858 -05 05 09.97   8.9   10.81   ~ 409 1
22 NGC 1700 EmG 04 56 56.3160873072 -04 51 56.794713228   12   11.14   ~ 356 1
23 NGC 1726 GiG 04 59 41.900 -07 45 18.51   13   11.25   ~ 71 0
24 NGC 2128 AG? 06 04 34.2343501608 +57 37 39.553968936   13.7       ~ 37 0
25 NGC 2300 AG? 07 32 20.486 +85 42 31.90   12.2       ~ 346 0
26 NGC 2418 AG? 07 36 37.4992142280 +17 53 01.870386972   13.7       ~ 66 0
27 NGC 2513 GiG 08 02 24.657 +09 24 48.93   13.7       ~ 96 0
28 NGC 2549 AG? 08 18 58.3507032336 +57 48 11.022298740   12.1       ~ 271 0
29 NGC 2768 SyG 09 11 37.504 +60 02 13.95 11.30 10.84 9.87     ~ 526 2
30 NGC 2872 rG 09 25 42.5308974048 +11 25 55.727649480   13.0       ~ 89 0
31 NGC 2911 Sy2 09 33 46.10739467 +10 09 08.8215304   14.96 13.83     ~ 259 0
32 NGC 2974 Sy2 09 42 33.2918467632 -03 41 57.038311068   12.19   10.77   ~ 463 0
33 NGC 3091 BiC 10 00 14.125 -19 38 11.32   12.04 10.61 10.56 9.25 ~ 192 0
34 NGC 3098 GiG 10 02 16.6969955520 +24 42 39.887384724   13.00       ~ 143 0
35 NGC 3115 GiG 10 05 13.9270507008 -07 43 06.982712292   11   9.37   ~ 1067 2
36 NGC 3139 G 10 10 05.2096601568 -11 46 41.361288636   14.24       ~ 21 0
37 NGC 3156 GiG 10 12 41.2457368824 +03 07 45.701284764   12.8       ~ 241 0
38 NGC 3193 GiP 10 18 24.884 +21 53 38.32 12.29 11.83 10.88 12.19   ~ 301 1
39 NGC 3226 rG 10 23 27.0064075320 +19 53 54.674937420   14.32 13.33     ~ 440 1
40 NGC 3245 LIN 10 27 18.3864983136 +28 30 26.621599932   11.6       ~ 372 0
41 NGC 3377 GiP 10 47 42.400 +13 59 08.30 11.55 11.24 10.38     ~ 798 1
42 M 105 LIN 10 47 49.600 +12 34 53.87   10.56 9.76 9.12 8.18 ~ 1504 0
43 NGC 3384 GiG 10 48 16.8855574392 +12 37 45.371165844   10.0       ~ 617 1
44 NGC 3412 GiG 10 50 53.2803559464 +13 24 43.721664876 11.84 11.45 10.54     ~ 248 1
45 NGC 3414 GiC 10 51 16.2099174408 +27 58 30.297624852   12.1       ~ 353 0
46 NGC 3599 GiP 11 15 26.9494646448 +18 06 37.428503940   13.0       ~ 226 0
47 NGC 3607 Sy2 11 16 54.65687 +18 03 06.5120   13.84 12.76     ~ 490 1
48 NGC 3608 LIN 11 16 58.967 +18 08 54.71   11.7       ~ 527 0
49 NGC 3610 GiG 11 18 25.2827189856 +58 47 10.433735988   11.4       ~ 327 0
50 NGC 3613 GiG 11 18 36.130 +57 59 59.73   11.6       ~ 221 0
51 NGC 3636 GiP 11 20 25.1128791960 -10 16 54.120018000   13       ~ 29 0
52 NGC 3640 GiG 11 21 06.852 +03 14 05.15 11.89 11.36 10.44     ~ 291 3
53 NGC 3665 GiG 11 24 43.630 +38 45 46.05 13.71 13.26 11.62     ~ 364 1
54 NGC 3923 GiG 11 51 01.783 -28 48 22.36 11.41 10.59 9.80 8.88   ~ 459 1
55 NGC 3941 Sy2 11 52 55.3609498656 +36 59 10.716212904   11.45 11.62 9.97   ~ 261 0
56 NGC 4125 GiP 12 08 06.017 +65 10 26.88 11.14 10.65 9.72     ~ 448 2
57 NGC 4261 LIN 12 19 23.2160630 +05 49 29.700024   13.92 12.87     ~ 1290 0
58 NGC 4365 GiG 12 24 28.228 +07 19 03.07   11.5       ~ 871 0
59 M 84 Sy2 12 25 03.74333 +12 53 13.1393 12.67 12.09 10.49     ~ 1841 2
60 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
61 NGC 4494 GiP 12 31 24.0391348536 +25 46 30.071664120   10.55 9.74     ~ 491 0
62 NGC 4550 GiP 12 35 30.5913588048 +12 13 14.921166792 12.97 12.56 11.68     ~ 558 1
63 NGC 4754 GiP 12 52 17.563 +11 18 49.18   11.6       ~ 295 0
64 NGC 5322 SyG 13 49 15.24 +60 11 25.8   11.3       ~ 432 2
65 NGC 5353 rG 13 53 26.7104646981 +40 16 59.200050598   11.8   10.57   ~ 309 1
66 NGC 5354 LIN 13 53 26.7262413240 +40 18 09.928163700   12.3   10.64   ~ 169 0
67 NGC 5363 rG 13 56 07.24367 +05 15 16.9200 12.59 12.12 10.51     ~ 235 1
68 NGC 5444 GiG 14 03 24.1287100728 +35 07 55.506515412   12.8       ~ 86 1
69 NGC 5557 GiG 14 18 25.708 +36 29 37.28   12.2       ~ 237 0
70 NGC 5576 GiP 14 21 03.691 +03 16 15.78 12.25 11.85 10.96     ~ 347 1
71 NGC 5638 GiP 14 29 40.3717451400 +03 13 59.987811648 12.57 12.14 11.20     ~ 252 2
72 NGC 5812 EmG 15 00 55.708 -07 27 26.33   12   11.19   ~ 164 0
73 NGC 5813 LIN 15 01 11.2302420864 +01 42 07.141569696 12.00 11.45 10.46 10.06   ~ 673 2
74 NGC 5831 GiG 15 04 07.0002600408 +01 13 11.705607012   13.1   11.19   ~ 304 0
75 NGC 5845 GiG 15 06 00.7823239488 +01 38 01.704838596   13.8 11.20 12.06 9.94 ~ 403 0
76 NGC 5846A GiP 15 06 29.2023813744 +01 35 41.627266512   14.1 13.37 13.07 12.1 ~ 125 0
77 NGC 5846 rG 15 06 29.253 +01 36 20.29   11.9   9.74   ~ 891 2
78 NGC 5854 GiG 15 07 47.6993537544 +02 34 07.059522288   13.1   11.23   ~ 155 0
79 NGC 5864 GiG 15 09 33.5680310184 +03 03 09.980709588   12.9   11.18   ~ 107 0
80 NGC 5865 GiP 15 09 49.4195561280 +00 28 12.385857792   13.5       ~ 99 0
81 NGC 5982 LIN 15 38 39.778 +59 21 21.21   12.4       ~ 302 0
82 NGC 6172 EmG 16 22 10.3020013728 -01 30 53.448782508   14.28       ~ 41 0
83 NGC 6411 AG? 17 35 32.8446342384 +60 48 48.236693796   13.2       ~ 119 0
84 NGC 6388 GlC 17 36 17.461 -44 44 08.34           ~ 988 1
85 NGC 6441 GlC 17 50 13.06 -37 03 05.2           ~ 940 0
86 MCG-05-48-009 AG? 20 23 13.8515900784 -27 42 52.348659840   12.92   11.37   ~ 51 0
87 NGC 7302 GiP 22 32 23.8132995648 -14 07 14.081965572   13       ~ 65 0
88 NGC 7332 GiP 22 37 24.5373044952 +23 47 53.830708800   12.0       ~ 391 0
89 NGC 7454 GiG 23 01 06.5120307216 +16 23 18.484008792   13.6       ~ 157 0
90 NGC 7585 AG? 23 18 01.348 -04 39 01.07   12.46 18.7 11.23   ~ 106 0
91 NGC 7619 GiG 23 20 14.524 +08 12 22.63   12.7       ~ 472 0
92 NGC 7626 rG 23 20 42.524 +08 13 01.43   12.8       ~ 438 1

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