Morphology-dependent trends of galaxy age with environment in Abell 901/902 seen with COMBO-17

Abstract

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.

arXiv commentAccepted for publication in MNRAS (Letters)

References in corpus (20)

• The Environmental Dependence of the Relations between Stellar Mass, Structure, Star Formation and Nuclear Activity in Galaxies
• Nearly 5000 Distant Early-Type Galaxies in COMBO-17: a Red Sequence and its Evolution since z~1
• The formation history of elliptical galaxies
• Differential Galaxy Evolution in Cluster and Field Galaxies at z=0.3
• Galaxy Star-Formation as a Function of Environment in the Early Data Release of the Sloan Digital Sky Survey
• The 2dF Galaxy Redshift Survey: The environmental dependence of galaxy star formation rates near clusters
• The Stellar Population Histories of Early-Type Galaxies. II. Controlling Parameters of the Stellar Populations
• A catalogue of the Chandra Deep Field South with multi-colour classification and photometric redshifts from COMBO-17
• The evolution of the star formation activity in galaxies and its dependence on environment
• NOAO Fundamental Plane Survey -- II. Age and Metallicity along the Red Sequence
• Colors, magnitudes and velocity dispersions in early-type galaxies: Implications for galaxy ages and metallicities
• The Transformation of Galaxies within the Large Scale Structure around a z=0.41 Cluster
• Star formation histories of early-type galaxies. I: Higher order Balmer lines as age indicators
• Early-type galaxies in low-density environments
• The star formation history of early-type galaxies as a function of mass and environment
• Red-sequence galaxies with young stars and dust: The cluster Abell 901/902 seen with COMBO-17
• The Different Environmental Dependencies of Star-formation for Giant and Dwarf Galaxies
• The NOAO Fundamental Plane Survey - III. Variations in the stellar populations of red-sequence galaxies from the cluster core to the virial radius
• Linking star-formation and enivronment in the A901/902 supercluster
• Bivariate Galaxy Luminosity Functions in the Sloan Digital Sky Survey

Cited by in corpus (12)

• Galaxy Zoo: the dependence of morphology and colour on environment
• Galaxy Zoo: Disentangling the Environmental Dependence of Morphology and Colour
• The STAGES view of red spirals and dusty red galaxies: Mass-dependent quenching of star-formation in cluster infall
• STAGES: the Space Telescope A901/2 Galaxy Evolution Survey
• Evolution of the Early-Type Galaxy Fraction in Clusters since z = 0.8
• Revealing components of the galaxy population through nonparametric techniques
• The morphological transformation and the quenching of galaxies
• Relating basic properties of bright early-type dwarf galaxies to their location in Abell 901/902
• Subaru Hyper Suprime-Cam revisits the large-scale environmental dependence on galaxy morphology over 360 deg${}^2$ at z=0.3-0.6
• OMEGA - OSIRIS Mapping of Emission-line Galaxies in A901/2: III. - Galaxy Properties Across Projected Phase Space in A901/2
• The MAGPI Survey: the subtle role of environment and not-so-subtle impact of generations of stars on galaxy dynamics
• Morphological Transformation and Star Formation Quenching of Massive Galaxies at 0.5 < z < 2.5 in 3D-HST/CANDELS