| Type |
Conference Paper |
| Names |
John S. Gallagher, M. Lee, R. Canning, A. Fabian, R. W. O'Connell, J. Sanders, E. Zweibel |
| Proceedings Title |
Bulletin of the American Astronomical Society |
| Conference Name |
American Astronomical Society, AAS Meeting #215, #363.08 |
| Volume |
42 |
| Pages |
552 |
| Date |
January 1, 2010 |
| Short Title |
Dusty Gas and New Stars |
| URL |
http://adsabs.harvard.edu/abs/2010AAS...21536308G |
| Library Catalog |
NASA ADS |
| Abstract |
Among the many fascinating features of NGC1275, the brightest cluster
galaxy in Perseus, is the high velocity optical emission line system
(HVS) discovered by Minkowski 50 years ago. While subsequent studies
show that the HVS arises from a spiral galaxy falling towards NGC1275
with a relative velocity of 3000 km/s, the details of this situation
have remained elusive. We obtained a better view of the disrupting HVS
galaxy by combining x-ray absorption measurements from Chandra with
optical and far-UV imaging obtained with the Advanced Camera for Surveys
on the Hubble Space Telescope. These data and comparisons with
simulations of galaxies experiencing ram pressure stripping in clusters
of galaxies suggest that: (1) gas is lost from the spiral in the form of
large clouds or streamers, (2) many clouds support active star
formation, and (3) star formation, like that within NGC1275, often
yields luminous, compact star clusters. These phenomena resemble
optically visible gas stripping events in other galaxy clusters, and
suggest they define how cluster infall affects spiral galaxies. We also
consider the implications of a possible eventual collision of the
stripped HVS gas clouds with the massive warm ISM in NGC1275. |