Star-forming galaxies in the 2dFGRS

2003/09/09 by B. Kelm, Giuseppe Sorrentino, Kelm, B. +4
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics (astro-ph) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena #Stellar, planetary, and galactic studies #astro-ph

paper · pdf · doi:10.48550/arxiv.astro-ph/0309268

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

arxiv created 2003/09/09 · openalex publication_date 2003/09/09 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

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 10¹³ M_sun,rather than in clusters only.

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