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| Paper: |
Barred Galaxies in the Coma Cluster |
| Volume: |
432, New Horizons in Astronomy: Frank N. Bash Symposium 2009 |
| Page: |
219 |
| Authors: |
Marinova, I.; Jogee, S.; Trentham, N.; Ferguson, H. C.; Weinzirl, T.; Balcells, M.; Carter, D.; den Brok, M.; Erwin, P.; Graham, A. W.; Goudfrooij, P.; Guzmán, R.; Hammer, D.; Hoyos, C.; Peletier, R. F.; Peng, E.; Kleijn, G. V. |
| Abstract: |
We use ACS data from the HST Treasury survey of the Coma cluster
(z∼ 0.02) to study the properties of barred galaxies in the Coma core,
the densest environment in the nearby Universe. This study provides a
complementary data point for studies of barred galaxies
as a function of redshift and environment. From ∼ 470 cluster
members brighter than MI = –11 mag, we select a sample of
46 disk galaxies (S0–Im) based on visual
classification. The sample is dominated by S0s for which we find
an optical bar fraction of 47±11% through ellipse fitting
and visual inspection.
Among the bars in the core of the Coma cluster, we do not find any very large
(abar>2 kpc) bars.
Comparison to other studies reveals that while the optical bar fraction
for S0s shows only a modest variation across
low-to-intermediate density environments (field to
intermediate-density clusters),
it can be higher by up to a factor of ∼ 2 in the very
high-density environment of the rich Coma cluster core. |
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