SIMBAD references

2007MNRAS.376L...1W - Mon. Not. R. Astron. Soc., 376, L1-L5 (2007/March-3)

Morphology-dependent trends of galaxy age with environment in A 901/2 seen with COMBO-17.

WOLF C., GRAY M.E., ARAGON-SALAMANCA A., LANE K.P. and MEISENHEIMER K.

Abstract (from CDS):

We investigate correlations between galaxy age and environment in the A 901/2 supercluster for separate morphologies. Using COMBO-17 data, we define a sample of 530 galaxies, complete at MV- 5 logh < -18 on an area of 3.5x3.5 (Mpc h–1)2. We explore several age indicators including an extinction-corrected residual from the colour-magnitude relation. 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.

Abstract Copyright: 2007 The Authors. Journal compilation © 2007 RAS

Journal keyword(s): galaxies: clusters: general - galaxies: evolution

Status at CDS:  

Simbad objects: 4

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2020.04.06-15:41:08

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