Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aspc..421..133i&link_type=abstract
Galaxies in Isolation: Exploring Nature Versus Nurture, proceedings of a conference held 12 to 15 May 2009 in Granada, Spain. Ed
Astronomy and Astrophysics
Astronomy
Scientific paper
Using samples of isolated and groups galaxies obtained from the first 10000 zCOSMOS-bright high quality redshifts, we study in detail the complex interplay between environment and galaxy evolution. Our main result is that galaxies of log( M* / Msun) ≍ 10.8 do not show any strong environmental dependency up to z ˜ 1. In contrast, for masses below this value and at redshift lower than z˜ 1, we witness the emergence of what we call nurture red galaxies: galaxies that slightly deviate from the trend of the downsizing scenario displayed by the global galaxy population and do more so as cosmic time progresses. There are various mechanisms occurring in groups (gradual cessation of star formation induced by gentle gas stripping and starvation by a diffuse intragroup medium, or by slow group-scale harassment), and that are more efficient for less massive galaxies. Our analysis implies that these mechanisms begin to significantly influence galaxy evolution after z˜1, a redshift corresponding to the emergence of structures in which these mechanisms take place.
Cucciati Olga
Iovino Angela
Knobel K.
Kovac Katarina
Lilly Simon
No associations
LandOfFree
Which Factors Shape Galaxy Evolution? 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 Which Factors Shape Galaxy Evolution?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Which Factors Shape Galaxy Evolution? will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1116500