2001AJ....121..683H


Query : 2001AJ....121..683H

2001AJ....121..683H - Astron. J., 121, 683-691 (2001/February-0)

A comparison of Coma cluster S0 galaxies with the Tully-Fisher relation for late-type spirals.

HINZ J.L., RIX H.-W. and BERNSTEIN G.M.

Abstract (from CDS):

We present I-band photometry for 13 S0 galaxies in the Coma Cluster and estimate their circular velocities based on stellar kinematics derived from stellar absorption-line spectroscopy. We find that there is at most a small offset, ΔmI≤ 0.2, in the I-band luminosity at a given circular velocity, vc∼200 km.s–1, between late-type spirals and the S0 galaxies studied here. This result implies a similar total I-band mass-to-light ratio (within an effective radius) among disk galaxies of rather different Hubble types. As the older stellar population in S0's is dimmer, this suggests a somewhat larger fraction of stellar mass in these S0's than in late-type spirals. We also find that the relation between I-band luminosity and vc for the S0 galaxies is at best poorly defined and has a scatter of σI∼ 0.5 mag, significantly larger than the Tully-Fisher relation (TFR) for late-type spirals in clusters, where the observed I-band scatter is σI≲ 0.3 mag. This substantial scatter is only somewhat less than that found by Neistein et al. in a recent study of 18 nearby S0 galaxies in the field (σI∼ 0.7 mag), implying that no tight TFR holds for field S0 galaxies. These results suggest that differing formation histories can lead to S0's with diverse properties. Our analysis of S0's in the Coma Cluster differs from previous analyses in two important respects: the data are independent of distance estimate errors, and they contain S0's formed in a more homogeneous environment.

Abstract Copyright:

Journal keyword(s): Galaxies: Elliptical and Lenticular, cD - Galaxies: Kinematics and Dynamics - Galaxies: Photometry

Simbad objects: 15

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Number of rows : 15
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 NGC 4787 GiG 12 54 05.5164031392 +27 04 07.045997916   15.44       ~ 43 1
2 Z 160-34 EmG 12 56 50.6168649480 +28 55 47.369825544   15.2 14.69     ~ 42 0
3 IC 3943 LIN 12 58 36.3535295664 +28 06 49.471215084 15.63 15.6 14.13     ~ 54 0
4 IC 3946 G 12 58 48.7288667760 +27 48 37.586925792 15.33 15.3 13.85 13.821 13.094 ~ 69 0
5 IC 3990 GiP 12 59 39.1074596328 +28 53 43.941436692   15.0 14.00     ~ 42 0
6 ACO 1656 ClG 12 59 48.7 +27 58 50           ~ 4549 2
7 NGC 4892 LIN 13 00 03.5339372112 +26 53 53.179178640   14.7       ~ 69 0
8 Z 160-83 EmG 13 00 14.0031758304 +28 49 41.415386484   15.4 14.58     ~ 38 0
9 IC 4088 AGN 13 01 43.3676518224 +29 02 40.932742776 15.01 14.70 13.82     ~ 119 1
10 2MFGC 10339 LIN 13 01 47.0185231920 +28 05 41.988686424   15.2       ~ 56 0
11 MCG+05-31-106 GiG 13 02 04.1929610568 +29 15 12.438717768   14.9 13.95     ~ 58 0
12 NGC 4931 GiG 13 03 00.8766606384 +28 01 56.920384380   14.4       ~ 83 0
13 NGC 4934 AGN 13 03 16.2443199696 +28 01 49.356583212   15.0       ~ 61 0
14 NGC 4944 GiG 13 03 49.9449729120 +28 11 08.552500332   13.3   12.69   ~ 96 0
15 NGC 4966 LIN 13 06 17.2929508536 +29 03 47.434815720   14.23 13.48     ~ 107 1

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2022.09.28-01:06:43

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