2011MNRAS.412.2017V

Query : 2011MNRAS.412.2017V

2011MNRAS.412.2017V - Mon. Not. R. Astron. Soc., 412, 2017-2025 (2011/April-2)

Optical and near-infrared velocity dispersions of early-type galaxies.

VANDERBEKE J., BAES M., ROMANOWSKY A.J. and SCHMIDTOBREICK L.

Abstract (from CDS):

We have carried out a systematic, homogeneous comparison of optical and near-infrared dispersions. Our magnitude-limited sample of early-type galaxies (ETGs) in the Fornax cluster comprises 11 elliptical and 11 lenticular galaxies more luminous than MB=-17. We were able to determine the central dispersions based on the near-infrared CO absorption band head for 19 of those galaxies. The velocity dispersions range from less than 70 km/s to over 400 km/s. We compare our near-infrared velocity dispersions to the optical dispersions measured by (Kuntschner). Contrary to previous studies, we find a one-to-one correspondence with a median fractional difference of 6.4 per cent. We examine the correlation between the relative dust mass and the fractional difference of the velocity dispersions, but find no significant trend. Our results suggest that early-type galaxies are largely optically thin, which is consistent with recent Herschel observations.

Based on new observations collected at the European Southern Observatory, Cerro Paranal, Chile; ESO programme 082.B-0897A.


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

Journal keyword(s): galaxies: clusters: individual: Fornax - galaxies: elliptical and lenticular, cD - galaxies: kinematics and dynamics

Simbad objects: 38

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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 - 2026 		#notes
1 HD 2490 PM* 00 28 26.5213084992 -39 54 53.997198336   6.956 5.415     M0III 49 0
2 HD 4730 PM* 00 49 25.6169251248 -13 33 40.575789900   6.925 5.594     K3III 60 0
3 NGC 1316 rG 03 22 41.789 -37 12 29.52 9.81 9.15 8.53 7.66   ~ 1491 1
4 NGC 1336 GiG 03 26 32.1845365512 -35 42 48.662672184   13.12   11.95   ~ 150 0
5 MCG-06-08-019 GiG 03 27 18.0282957096 -34 31 35.315736492   14.15   12.95   ~ 98 0
6 NGC 1339 EmG 03 28 06.5493649512 -32 17 09.840527844   12.63   11.18   ~ 171 0
7 NGC 1340 GiG 03 28 19.6251763296 -31 04 05.435465520   11.20 10.32 9.70   ~ 222 1
8 NGC 1351 GiG 03 30 34.9598617824 -34 51 14.242996620   12.30   10.85   ~ 190 0
9 NGC 1373 GiP 03 34 59.1993515280 -35 10 15.879086760 14.44 14.03 13.26     ~ 136 1
10 NGC 1374 EmG 03 35 16.5885737352 -35 13 34.563417168 12.46 11.97 11.08 10.59   ~ 322 1
11 NGC 1375 GiG 03 35 16.8025873104 -35 15 56.371399740 13.50 13.02 12.40 11.74   ~ 175 1
12 IC 335 GiG 03 35 31.0692175536 -34 26 49.368859656   12.90   11.71   ~ 147 0
13 MCG-05-09-017 EmG 03 35 33.134 -32 27 53.55   13.90       ~ 90 0
14 NGC 1379 GiP 03 36 03.9668625792 -35 26 28.547476800 12.17 12.04 10.91 10.60   ~ 277 1
15 NGC 1380 Sy2 03 36 27.590 -34 58 34.68 11.32 10.94 9.93 9.37   ~ 460 1
16 NGC 1381 GiP 03 36 31.6592184144 -35 17 42.739221912 12.90 12.47 11.50 11.02   ~ 269 1
17 NGC 1380A GiG 03 36 47.5007323848 -34 44 22.739259552 13.63 13.36 12.41 12.00   ~ 156 1
18 NGC 1399 rG 03 38 29.083 -35 27 02.67 11.05 9.74 9.59 8.12   ~ 1636 1
19 ACO S 373 ClG 03 38 29.4 -35 27 08           ~ 2029 0
20 NGC 1404 rG 03 38 51.917 -35 35 39.81 11.53 10.69 10.00 9.03   ~ 787 1
21 NGC 1419 GiG 03 40 42.1036600944 -37 30 38.778564456   13.56   12.07   ~ 146 0
22 MCG-06-09-018 GiG 03 41 03.6078361560 -33 46 45.297655572   13.86   12.57   ~ 95 0
23 NGC 1427 GiG 03 42 19.4455150392 -35 23 33.169251120   11.89   10.44   ~ 298 0
24 MCG-06-09-026 GiG 03 45 03.5753235792 -35 58 21.372259872   14.08   12.85   ~ 131 0
25 HD 23574 * 03 45 26.7975156024 -22 20 35.955058668   10.12 9.15     G8III 5 0
26 MCG-06-09-034 GiG 03 50 36.7310457912 -35 54 34.013712996   14.48   13.49   ~ 90 0
27 IC 2006 EmG 03 54 28.4628183240 -35 58 01.673622516   12.39   10.94 11.9 ~ 217 0
28 HD 27796 * 04 24 25.4872394616 +29 01 11.405806896   9.43 7.72     M5III 21 0
29 HD 30354 AB* 04 47 47.9312261952 +22 08 21.898941180   10.17 8.43     M5III 19 0
30 * bet Col PM* 05 50 57.5922846925 -35 46 05.914636356 5.49 4.28 3.12 2.27 1.69 K1III_CN+1 153 0
31 V* V394 Pup LP* 07 47 07.3535366400 -41 31 02.999594748   9.10 7.65     K7III 23 0
32 M 86 GiG 12 26 11.814 +12 56 45.49 10.32 9.83 8.90   7.50 ~ 1126 1
33 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
34 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
35 HD 113538 PM* 13 04 57.4765361506 -52 26 34.525896996 11.733 10.433 9.057 8.202 7.418 K9Vk: 95 1
36 HD 234791 V* 19 03 50.5341599232 +50 15 30.374928612   9.30 9.19     A1V 13 0
37 * d Aqr PM* 21 39 33.2671925016 +02 14 36.819344148   6.136 5.100     K0III 81 0
38 * c02 Aqr PM* 23 09 26.7960449399 -21 10 20.694738029 6.09 4.87 3.64 2.80 2.20 K1.5III 106 0

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