2006MNRAS.369..497K


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.19CEST15:36:12

2006MNRAS.369..497K - Mon. Not. R. Astron. Soc., 369, 497-528 (2006/June-3)

The SAURON project - VI. Line strength maps of 48 elliptical and lenticular galaxies.

KUNTSCHNER H., EMSELLEM E., BACON R., BUREAU M., CAPPELLARI M., DAVIES R.L., DE ZEEUW P.T., FALCON-BARROSO J., KRAJNOVIC D., McDERMID R.M., PELETIER R.F. and SARZI M.

Abstract (from CDS):

We present absorption line strength maps of 48 representative elliptical and lenticular galaxies obtained as part of a survey of nearby galaxies using our custom-built integral-field spectrograph, SAURON, operating on the William Herschel Telescope. Using high-quality spectra, spatially binned to a constant signal-to-noise ratio, we measure four key age, metallicity and abundance ratio sensitive indices from the Lick/IDS system over a two-dimensional field extending up to approximately one effective radius. A discussion of calibrations and offsets is given, along with a description of error estimation and nebular emission correction. We modify the classical Fe5270 index to define a new index, Fe5270S, which maximizes the useable spatial coverage of SAURON. Maps of Hβ, Fe5015, Mgb and Fe5270Sare presented for each galaxy. We use the maps to compute average line strengths integrated over circular apertures of one-eighth effective radius, and compare the resulting relations of index versus velocity dispersion with previous long-slit work. The metal line strength maps show generally negative gradients with increasing radius roughly consistent with the morphology of the light profiles. Remarkable deviations from this general trend exist, particularly the Mgb isoindex contours appear to be flatter than the isophotes of the surface brightness for about 40 per cent of our galaxies without significant dust features. Generally, these galaxies exhibit significant rotation. We infer from this that the fast-rotating component features a higher metallicity and/or an increased Mg/Fe ratio as compared to the galaxy as a whole. The Hβ maps are typically flat or show a mild positive outwards radial gradient, while a few galaxies show strong central peaks and/or elevated overall Hβ strength likely connected to recent star formation activity. For the most prominent post-starburst galaxies, even the metal line strength maps show a reversed gradient.

Abstract Copyright: 2006 The Authors. Journal compilation © 2006 RAS

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

Simbad objects: 61

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Number of rows : 61

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NGC 474 GiP 01 20 06.696 +03 24 54.97 12.75 12.37 11.51 11.42 10.56 ~ 323 1
2 NGC 524 GiP 01 24 47.707 +09 32 19.65   11.5       ~ 431 1
3 HD 9353 ** 01 33 25.7073470464 +58 19 38.451215082   7.153 5.709     K3Ib-II+B7/8: 59 0
4 NGC 821 G 02 08 21.150 +10 59 41.53   12.210 11.310 10.739 9.744 ~ 545 0
5 NGC 1023 IG 02 40 24.012 +39 03 47.70 10.91 10.35 9.35 7.83   ~ 617 2
6 BD+52 913 WD* 05 05 30.6182785658 +52 49 51.920797126 10.25 11.44 11.69 11.93 12.108 DA.8 1003 0
7 NGC 2549 G 08 18 58.3495954248 +57 48 11.017861378   12.1       ~ 236 0
8 NGC 2695 GiG 08 54 27.0742562741 -03 04 00.992454007   13.3       ~ 101 0
9 NGC 2685 Sy2 08 55 34.7056265191 +58 44 03.877798862   13.68 12.70     ~ 410 1
10 NGC 2699 GiG 08 55 48.7840157168 -03 07 39.601081073   13.6       ~ 98 0
11 NGC 2768 SyG 09 11 37.504 +60 02 13.95 11.30 10.84 9.87     ~ 471 2
12 NGC 2974 Sy2 09 42 33.267 -03 41 56.82   12.19   10.77   ~ 416 0
13 NGC 3032 AGN 09 52 08.1487752500 +29 14 10.423175735   13.87 13.28     ~ 237 0
14 NGC 3156 GiG 10 12 41.2459118495 +03 07 45.693904357   12.8       ~ 223 0
15 Feige 34 HS* 10 39 36.7377085527 +43 06 09.209752646 9.613 10.91 11.14 11.319 11.464 sdOp 619 0
16 NGC 3377 GiP 10 47 42.400 +13 59 08.30 11.55 11.24 10.38     ~ 735 1
17 M 105 LIN 10 47 49.600 +12 34 53.87   10.56 9.76 9.12 8.18 ~ 1397 0
18 NAME M96 Group GrG 10 48 +13.3           ~ 286 0
19 NGC 3384 GiG 10 48 16.897 +12 37 45.48   10.0       ~ 559 1
20 NGC 3414 GiP 10 51 16.242 +27 58 29.88   12.1       ~ 302 0
21 NGC 3489 GiG 11 00 18.5473550222 +13 54 04.215155077 11.46 11.12 10.29     ~ 367 1
22 NGC 3608 LIN 11 16 58.967 +18 08 54.71   11.7       ~ 483 0
23 NGC 4150 GiG 12 10 33.655 +30 24 05.35 12.72 12.44 11.64     ~ 288 2
24 NGC 4262 GiG 12 19 30.582 +14 52 39.78 13.00 12.49 11.55     ~ 333 1
25 NGC 4270 GiP 12 19 49.435 +05 27 48.14   13.3       ~ 167 0
26 NGC 4278 LIN 12 20 06.8253868 +29 16 50.713486 11.54 11.09 10.16     ~ 898 2
27 NAME Coma I Group GrG 12 22 19.4 +29 53 47           ~ 101 0
28 M 84 Sy2 12 25 03.74333 +12 53 13.1393 12.67 12.09 10.49     ~ 1665 2
29 M 85 GiP 12 25 24.053 +18 11 27.89   10.2       ~ 612 0
30 NGC 4387 GiG 12 25 41.6768872639 +12 48 37.809497625 13.42 13.01 12.12   10.87 ~ 374 1
31 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 6011 0
32 NGC 4458 GiP 12 28 57.532 +13 14 30.90 13.27 12.93 12.07     ~ 392 2
33 NGC 4459 H2G 12 29 00.026 +13 58 42.89   11.6       ~ 502 0
34 NGC 4473 GiG 12 29 48.878 +13 25 45.55 11.60 11.16 10.20     ~ 612 1
35 NGC 4477 Sy2 12 30 02.172 +13 38 11.19 11.98 11.38 10.42     ~ 370 2
36 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6385 3
37 NGC 4526 GiG 12 34 03.029 +07 41 56.90   10.6       ~ 613 1
38 NGC 4546 GiG 12 35 29.506 -03 47 35.62 11.89 11.30 10.32     ~ 206 1
39 NGC 4550 GiP 12 35 30.612 +12 13 15.44 12.97 12.56 11.68     ~ 512 1
40 M 89 LIN 12 35 39.8073444 +12 33 22.830809 11.29 10.73 9.75     ~ 941 2
41 NGC 4564 GiG 12 36 26.994 +11 26 21.55 12.51 12.05 11.12     ~ 569 1
42 NGC 4570 GiG 12 36 53.401 +07 14 47.99   11.8       ~ 315 0
43 BD+25 2534 HS* 12 37 23.5157891619 +25 03 59.871049394 9.117 10.26 10.59 10.642 10.809 sdB1(k) 214 0
44 M 59 GiG 12 42 02.322 +11 38 48.95   11.0       ~ 667 0
45 NGC 4660 GiP 12 44 31.9848549289 +11 11 25.730688043   12.1       ~ 401 0
46 HZ 44 HS* 13 23 35.2632775627 +36 07 59.545982652 10.186 11.42 11.65 12.00 11.995 sdBN0VIIHe28 378 0
47 NGC 5198 GiP 13 30 11.411 +46 40 14.99   13.2       ~ 160 0
48 NGC 5308 GiP 13 47 00.4356033187 +60 58 23.332964486   12.5       ~ 192 0
49 NGC 5813 LIN 15 01 11.265 +01 42 07.09 12.00 11.45 10.46 10.06   ~ 591 1
50 NGC 5831 GiG 15 04 07.024 +01 13 11.70   13.1   11.19   ~ 281 0
51 NGC 5838 GiP 15 05 26.272 +02 05 57.68   12.1   10.26   ~ 224 0
52 NGC 5845 GiG 15 06 00.787 +01 38 01.77   13.8 11.20 12.06 9.94 ~ 360 0
53 MCG+00-38-026 GiP 15 06 29.199 +01 35 41.55   14.1 13.37 13.07 12.1 ~ 108 0
54 NGC 5846 BiC 15 06 29.253 +01 36 20.29   11.9   9.74   ~ 790 1
55 NGC 5982 LIN 15 38 39.778 +59 21 21.21   12.4       ~ 279 0
56 BD+33 2642 pA* 15 51 59.8857490337 +32 56 54.327647794 9.806 10.61 10.73 10.884 10.961 O7p 386 0
57 * g Her AB* 16 28 38.5485851 +41 52 54.040593 7.70 6.53 5.01 2.49 0.26 M6-III 367 0
58 LAWD 74 WD* 19 20 34.9229875534 -07 40 00.066805378 11.553 12.345 12.290 12.229 12.164 DBQA5 204 0
59 BD+28 4211 HS* 21 51 11.0220905905 +28 51 50.366090892 8.922 10.25 10.58 10.656 10.831 sdO2VIIIHe5 746 0
60 NGC 7332 GiP 22 37 24.522 +23 47 54.06   12.0       ~ 358 0
61 NGC 7457 G 23 00 59.9274269967 +30 08 41.794468187   11.04 11.87     ~ 413 0

    Equat.    Gal    SGal    Ecl

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2021.04.19-15:36:13

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