Star-forming galaxies in the 2dFGRS

Details Star-forming galaxies in the 2dFGRS Star-forming galaxies in the 2dFGRS

2003-09-09

arxiv.org/abs/astro-ph/0309268v1

Astronomy and Astrophysics

Astrophysics

2 pages, 2 figures, to appear in "Multiwavelength Cosmology", Mykonos Conference Proceedings

Scientific paper

We examine the environment of star-forming galaxies selected in the 2dFGRS. We find that bright star-forming galaxies display a significant deficit of faint neighbours relative to passive galaxies. If a deficit in fainter companions implies a smaller mass halo, data support a scenario predicting star-formation to be suppressed in all systems more massive than 10^{13} M_sun,rather than in clusters only.

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