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Caught in the Act: Witnessing a~Transforming Spiral in a Galaxy Group

Published online by Cambridge University Press:  01 August 2006

J. Rasmussen ,
T. J. Ponman  and
J. S. Mulchaey
J. Rasmussen
Affiliation:
School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK email: jesper@star.sr.bham.ac.uk (JR), tjp@star.sr.bham.ac.uk (TJP)
T. J. Ponman
Affiliation:
School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK email: jesper@star.sr.bham.ac.uk (JR), tjp@star.sr.bham.ac.uk (TJP)
J. S. Mulchaey
Affiliation:
Observatories of the Carnegie Institution, 813 Santa Barbara Street, Pasadena, CA, USA email: mulchaey@ociw.edu
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Abstract

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Ram pressure stripping of galaxies is believed to be inefficient in galaxy groups, but Chandra X-ray observations of the starburst spiral NGC 2276, a member of a small galaxy group, shows that this galaxy is being stripped of its gas at a rate of ~5 M⊙ yr−1 due to its motion through hot intragroup gas. This provides direct evidence that mechanisms associated with ram pressure can strip galaxies of their gas in systems much smaller than galaxy clusters.

Keywords

Galaxies: evolutiongalaxies: individual (NGC 2276)galaxies: interactions
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S235: Galaxy Evolution Across the Hubble Time , August 2006 , pp. 239
Copyright
Copyright © International Astronomical Union 2007

References

Rasmussen, J., Ponman, T.J. & Mulchaey, J.S. 2006, MNRAS 370, 453.CrossRefGoogle Scholar