An optical view of the 4 Mpc X-ray filament of Abell 85

Details An optical view of the 4 Mpc X-ray filament of Abell 85 An optical view of the 4 Mpc X-ray filament of Abell 85

Nov 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008sf2a.conf..365b&link_type=abstract

"SF2A-2008: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics Eds.: C. Charbonnel, F. Combes

Astronomy and Astrophysics

Astrophysics

Scientific paper

The merging cluster Abell 85 (z=0.055) has a filament discovered in X-rays at least 4 Mpc in length, interpreted as due to groups falling on to the main cluster. We present here an optical study of this filament, based on deep broad band optical imaging and on Hα imaging, with the aims of: 1) analyzing the faint end slopes of galaxy luminosity functions in various wavelength bands and in various regions, which are expected to be influenced by physical processes (mergers, tides, infall); 2) searching for star formation in the filament galaxies, as expected if this region is undergoing merging processes.

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