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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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