Mass and the Morphology-Density Relation

Details Mass and the Morphology-Density Relation Mass and the Morphology-Density Relation

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aspc..379..239h&link_type=abstract

Cosmic Frontiers ASP Conference Series, Vol. 379, proceedings of the conference held 31 July-4 August 2006 at Durham University,

Computer Science

Scientific paper

We examine the morphology-density relation for complete mass-limited samples of galaxies from five X-ray luminous clusters from z=0.023 to z=0.83. We find no change in the morphology-density relation for our complete sample of 366 galaxies with masses > 10^{10.8} M_{sun} (roughly 0.4 M_{star} at z=0). In contrast, we find a change in the early-type fraction with redshift that is in good agreement with previous work in a luminosity-selected sample (0.4 L_{star}) of 478 galaxies from the same parent data. Our results indicate that the galaxies that dominate the morphology-density relation, and its evolution, have masses < 10^{10.8} M_{sun}.

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