Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aj....121..683h&link_type=abstract
The Astronomical Journal, Volume 121, Issue 2, pp. 683-691.
Astronomy and Astrophysics
Astronomy
17
Galaxies: Elliptical And Lenticular, Cd, Galaxies: Kinematics And Dynamics, Galaxies: Photometry
Scientific paper
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.
Bernstein Gary M.
Hinz Joannah L.
Rix Hans-Walter
No associations
LandOfFree
A Comparison of Coma Cluster S0 Galaxies with the Tully-Fisher Relation for Late-Type Spirals does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A Comparison of Coma Cluster S0 Galaxies with the Tully-Fisher Relation for Late-Type Spirals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Comparison of Coma Cluster S0 Galaxies with the Tully-Fisher Relation for Late-Type Spirals will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1712279