2006MNRAS.373..906M


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.19CEST13:20:07

2006MNRAS.373..906M - Mon. Not. R. Astron. Soc., 373, 906-958 (2006/December-2)

The SAURON project - VIII. OASIS/CFHT integral-field spectroscopy of elliptical and lenticular galaxy centres.

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

Abstract (from CDS):

We present high spatial resolution integral-field spectroscopy of 28 elliptical (E) and lenticular (S0) galaxies from the SAURON representative survey obtained with the OASIS spectrograph during its operation at the Canada-France-Hawaii Telescope. These seeing-limited observations explore the central 8x10 arcsec2 (typically 1 kpc diameter) regions of these galaxies using a spatial sampling four times higher than SAURON (0.27-arcsec versus 0.94-arcsec spatial elements), resulting in almost a factor of 2 improvement in the median point spread function. These data allow accurate study of the central regions to complement the large-scale view provided by SAURON. Here we present the stellar and gas kinematics, stellar absorption-line strengths and nebular emission-line strengths for this sample. We also characterize the stellar velocity maps using the `kinemetry' technique, and derive maps of the luminosity-weighted stellar age, metallicity and abundance ratio via stellar population models. We give a brief review of the structures found in our maps, linking also to larger-scale structures measured with SAURON. We present two previously unreported kinematically decoupled components (KDCs) in the centres of NGC3032 and NGC4382. We compare the intrinsic size and luminosity-weighted stellar age of all the visible KDCs in the full SAURON sample, and find two types of components: kiloparsec-scale KDCs, which are older than 8 Gyr, and are found in galaxies with little net rotation; and compact KDCs, which have intrinsic diameters of less than a few hundred parsec, show a range of stellar ages from 0.5 to 15 Gyr (with 5/6 younger than 5 Gyr), are found exclusively in fast-rotating galaxies, and are close to counter-rotating around the same axis as their host. Of the seven galaxies in the SAURON sample with integrated luminosity-weighted ages less than 5 Gyr, five show such compact KDCs, suggesting a link between counter-rotation and recent star formation. We show that this may be due to a combination of small sample size at young ages, and an observational bias, since young KDCs are easier to detect than their older and/or corotating counterparts.

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

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

Simbad objects: 38

goto Full paper

goto View the reference in ADS

Number of rows : 38

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 HD 3969 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 11276 1
2 NGC 1023 IG 02 40 24.012 +39 03 47.70 10.91 10.35 9.35 7.83   ~ 617 2
3 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
4 NGC 2549 G 08 18 58.3495954248 +57 48 11.017861378   12.1       ~ 236 0
5 NGC 2695 GiG 08 54 27.0742562741 -03 04 00.992454007   13.3       ~ 101 0
6 NGC 2699 GiG 08 55 48.7840157168 -03 07 39.601081073   13.6       ~ 98 0
7 NGC 2768 SyG 09 11 37.504 +60 02 13.95 11.30 10.84 9.87     ~ 471 2
8 NGC 2974 Sy2 09 42 33.267 -03 41 56.82   12.19   10.77   ~ 416 0
9 NGC 3032 AGN 09 52 08.1487752500 +29 14 10.423175735   13.87 13.28     ~ 237 0
10 M 105 LIN 10 47 49.600 +12 34 53.87   10.56 9.76 9.12 8.18 ~ 1397 0
11 NGC 3384 GiG 10 48 16.897 +12 37 45.48   10.0       ~ 559 1
12 HD 93521 * 10 48 23.5116139485 +37 34 13.089937784 5.67 6.79 7.03     O9.5IIInn 406 1
13 NGC 3414 GiP 10 51 16.242 +27 58 29.88   12.1       ~ 302 0
14 NGC 3489 GiG 11 00 18.5473550222 +13 54 04.215155077 11.46 11.12 10.29     ~ 367 1
15 NGC 3608 LIN 11 16 58.967 +18 08 54.71   11.7       ~ 483 0
16 NGC 4150 GiG 12 10 33.655 +30 24 05.35 12.72 12.44 11.64     ~ 288 2
17 NGC 4262 GiG 12 19 30.582 +14 52 39.78 13.00 12.49 11.55     ~ 333 1
18 NGC 4365 GiG 12 24 28.228 +07 19 03.07   11.5       ~ 806 0
19 M 85 GiP 12 25 24.053 +18 11 27.89   10.2       ~ 612 0
20 NGC 4458 GiP 12 28 57.532 +13 14 30.90 13.27 12.93 12.07     ~ 392 2
21 NGC 4459 H2G 12 29 00.026 +13 58 42.89   11.6       ~ 502 0
22 NGC 4473 GiG 12 29 48.878 +13 25 45.55 11.60 11.16 10.20     ~ 612 1
23 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6385 3
24 NGC 4526 GiG 12 34 03.029 +07 41 56.90   10.6       ~ 613 1
25 M 89 LIN 12 35 39.8073444 +12 33 22.830809 11.29 10.73 9.75     ~ 941 2
26 NGC 4564 GiG 12 36 26.994 +11 26 21.55 12.51 12.05 11.12     ~ 569 1
27 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
28 M 59 GiG 12 42 02.322 +11 38 48.95   11.0       ~ 667 0
29 HZ 44 HS* 13 23 35.2632775627 +36 07 59.545982652 10.186 11.42 11.65 12.00 11.995 sdBN0VIIHe28 378 0
30 NGC 5198 GiP 13 30 11.411 +46 40 14.99   13.2       ~ 160 0
31 NGC 5813 LIN 15 01 11.265 +01 42 07.09 12.00 11.45 10.46 10.06   ~ 591 1
32 NGC 5831 GiG 15 04 07.024 +01 13 11.70   13.1   11.19   ~ 281 0
33 NGC 5845 GiG 15 06 00.787 +01 38 01.77   13.8 11.20 12.06 9.94 ~ 360 0
34 NGC 5846 BiC 15 06 29.253 +01 36 20.29   11.9   9.74   ~ 790 1
35 NGC 5982 LIN 15 38 39.778 +59 21 21.21   12.4       ~ 279 0
36 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
37 NGC 7332 GiP 22 37 24.522 +23 47 54.06   12.0       ~ 358 0
38 NGC 7457 G 23 00 59.9274269967 +30 08 41.794468187   11.04 11.87     ~ 413 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2006MNRAS.373..906M and select 'bookmark this link' or equivalent in the popup menu


2021.04.19-13:20:07

© Université de Strasbourg/CNRS

    • Contact