H I deficiency in cluster spiral galaxies - Dependence on galaxy size


Autoria(s): Monica, Valluri; Jog, Chanda J
Data(s)

10/06/1991

Resumo

From the available H I data on spiral galaxies in three rich Abell clusters and the Virgo Cluster, it is shown that galaxies with medium to large optical sizes tend to be more severely deficient in atomic hydrogen than the small galaxies. This is so both in terms of the fractional number of galaxies that are deficient and the amount of gas lost by a galaxy. The fraction of H I-deficient galaxies increases with size over most of the size range, saturating or dropping only for the largest galaxies. A comparative study is made of various currently accepted gas removal mechanisms, namely those which are a result of galaxy-intracluster medium interactions, e.g., ram pressure stripping, as well as those due to galaxy-galaxy interactions, i.e., collisions and tidal interactions. It is shown that, with the exception of tidal interactions, all of these mechanisms would produce a size dependence in H I deficiency that is the opposite of that observed. That is, the gas in the largest galaxies would be the least affected by these mechanisms. However, if there is significant mass segregation, these processes may give the trends observed in the size dependence of H I deficiency.

Formato

application/pdf

Identificador

http://eprints.iisc.ernet.in/33867/1/hi.pdf

Monica, Valluri and Jog, Chanda J (1991) H I deficiency in cluster spiral galaxies - Dependence on galaxy size. In: Astrophysical Journal, 374 (1). 103 -111.

Publicador

University of Chicago Press

Relação

http://adsabs.harvard.edu/doi/10.1086/170100

http://eprints.iisc.ernet.in/33867/

Palavras-Chave #Joint Astronomy Programme #Physics
Tipo

Journal Article

PeerReviewed