Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-11-30
Mon.Not.Roy.Astron.Soc.Lett.376:L1-L5,2007
Astronomy and Astrophysics
Astrophysics
Accepted for publication in MNRAS (Letters)
Scientific paper
10.1111/j.1745-3933.2006.00272.x
We investigate correlations between galaxy age and environment in the Abell 901/2 supercluster for separate morphologies. Using COMBO-17 data, we define a sample of 530 galaxies, complete at $M_V -5\log h<-18$ on an area of $3.5\times 3.5$ (Mpc/$h$)$^2$. We explore several age indicators including an extinction-corrected residual from the colour-magnitude relation (CMR). As a result, we find a clear trend of age with density for galaxies of all morphologies that include a spheroidal component, in the sense that galaxies in denser environments are older. This trend is not seen among Scd/Irr galaxies since they all have young ages. However, the trend among the other types is stronger for fainter galaxies. While we also see an expected age-morphology relation, we find no evidence for a morphology-density relation at fixed age.
Aragon-Salamanca Alfonso
Gray Meghan E.
Lane Kyle P.
Meisenheimer Klaus
Wolf Carl
No associations
LandOfFree
Morphology-dependent trends of galaxy age with environment in Abell 901/902 seen with COMBO-17 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 Morphology-dependent trends of galaxy age with environment in Abell 901/902 seen with COMBO-17, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Morphology-dependent trends of galaxy age with environment in Abell 901/902 seen with COMBO-17 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-422167