Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-07-25
Astronomy and Astrophysics
Astrophysics
5 pages, 4 figures, ApJL in press
Scientific paper
10.1086/526544
We use a cosmological chemodynamical simulation to study how the group environment impacts the star formation properties of disk galaxies. The simulated group has a total mass of M~8x10^12 Msun and a total X-ray luminosity of L_X~10^41 erg s^-1. Our simulation suggests that ram pressure is not sufficient in this group to remove the cold disk gas from a V_rot~150 km s^-1 galaxy. However, the majority of the hot gas in the galaxy is stripped over a timescale of approximately 1 Gyr. Since the cooling of the hot gas component provides a source for new cold gas, the stripping of the hot component effectively cuts off the supply of cold gas. This in turn leads to a quenching of star formation. The galaxy maintains the disk component after the cold gas is consumed, which may lead to a galaxy similar to an S0. Our self-consistent simulation suggests that this strangulation mechanism works even in low mass groups, providing an explanation for the lower star formation rates in group galaxies relative to galaxies in the field.
Kawata Daisuke
Mulchaey John S.
No associations
LandOfFree
Strangulation in Galaxy Groups does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Strangulation in Galaxy Groups, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Strangulation in Galaxy Groups will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-40125