HI Content of the MKW 10 Group Galaxies

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

The Undergraduate ALFALFA (Arecibo Legacy Fast ALFA) Team Groups Project is a collaborative undertaking of faculty and undergraduates at 8 institutions, aimed at investigating properties of galaxy groups surveyed by the ALFALFA blind HI survey. The Siena College team is analyzing a 4 degree by 4 degree region around the galaxy group MKW 10, a compact group that lies at an average recession velocity of 6,150 km/s. We calculate HI mass using the ALFALFA data, and stellar mass using photometry from the Sloan Digital Sky Survey. Of the 24 group galaxies that lie within a projected distance of 1 Mpc, 15 are detected in HI with HI masses above 7E8 solar masses. We present preliminary results comparing the HI content of the group members with the HI content of surrounding field galaxies. This work has been supported by NSF grants AST-0724918, AST-0725267, AST-0725380, and AST-0847430.

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