Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21538601y&link_type=abstract
American Astronomical Society, AAS Meeting #215, #386.01; Bulletin of the American Astronomical Society, Vol. 42, p.601
Astronomy and Astrophysics
Astronomy
Scientific paper
We have investigated the recent star formation history of the nearby galaxies using the SDSS optical and Galex UV data. To everyone's surprise, we found that roughly 30 percent of elliptical galaxies had a residual star formation in the last billion years, suggesting that residual star formation has been common even in ellipticals. Galaxy evolution models based on semi-analytic prescriptions including AGN feedback reasonably reproduce the star formation properties of elliptical galaxies. However, we found that the current galaxy models miserably fail to reproduce the star formation properties of satellite disc galaxies in cluster environments. Satellite disc galaxies in models are overly star-formation quenched in comparison to observation. Detailed investigations led us to conclude that this is due to the use of inaccurate prescriptions for the gas content evolution in the model. I present a solution to the problem by adopting more realistic physical prescriptions.
Kimm Taysun
Yi Sukyoung
No associations
LandOfFree
Satellite Overquenching Problem 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 Satellite Overquenching Problem, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Satellite Overquenching Problem will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-964342