Morphological Transformations of Galaxies in the A901/02 Supercluster from STAGES
Heiderman, A.; Jogee, S.; Bacon, D.; Balogh, M.;Barden, M.; Barazza, F. D.; Bell, E. F.; Böhm, A.;Caldwell, J. A. R.; Gray, M. E.; Häussler, B.;Heymans, C.; Jahnke, K.; van Kampen, E.; Koposov, S.;Lane, K.; Marinova, I.; McIntosh, D.;Meisenheimer, K.; Peng, C. Y.; Rix, H.-W.;Sánchez, S. F.; Somerville, R.; Taylor, A.;Wisotzki, L.; Wolf, C.; Zheng, X.. Morphological Transformations of Galaxies in the A901/02 Supercluster from STAGES. New Horizons in Astronomy: Frank N. Bash Symposium 2007 ASP Conference Series, Vol. 393, proceedings of the conference held 14-16 October 2007 at the University of Texas, Austin, Texas, USA. Edited by Anna Frebel, Justyn R. Maund, Juntai Shen, and Michael H. Siegel. San Francisco: Astronomical Society of the Pacific, 2008., p.211. 2008, Vol. , p. -2008.
We present a study of galaxies in the Abell 901/902 Supercluster at z˜0.165, based on HST ACS F606W, COMBO-17, Spitzer 24 μm, XMM-Newton X-ray, and gravitational lensing maps, as part of the STAGES survey. We characterize galaxies with strong externally-triggered morphological distortions and normal relatively undisturbed galaxies, using visual classification and quantitative CAS parameters. We compare normal and distorted galaxies in terms of their frequency, distribution within the cluster, star formation properties, and relationship to dark matter (DM) or surface mass density, and intra-cluster medium (ICM) density. We revisit the morphology density relation, which postulates a higher fraction of early type galaxies in dense environments, by considering separately galaxies with a low bulge-to-disk (B/D) ratio and a low gas content as these two parameters may not be correlated in clusters. We report here on our preliminary analysis.
We present a study of galaxies in the Abell 901/902 Supercluster at z˜0.165, based on HST ACS F606W, COMBO-17, Spitzer 24 μm, XMM-Newton X-ray, and gravitational lensing maps, as part of the STAGES survey. We characterize galaxies with strong externally-triggered morphological distortions and normal relatively undisturbed galaxies, using visual classification and quantitative CAS parameters. We compare normal and distorted galaxies in terms of their frequency, distribution within the cluster, star formation properties, and relationship to dark matter (DM) or surface mass density, and intra-cluster medium (ICM) density. We revisit the morphology density relation, which postulates a higher fraction of early type galaxies in dense environments, by considering separately galaxies with a low bulge-to-disk (B/D) ratio and a low gas content as these two parameters may not be correlated in clusters. We report here on our preliminary analysis.