HI Deficiency Estimates in Galaxy Group AWM3

Details HI Deficiency Estimates in Galaxy Group AWM3 HI Deficiency Estimates in Galaxy Group AWM3

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21933826p&link_type=abstract

American Astronomical Society, AAS Meeting #219, #338.26

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Scientific paper

The Undergraduate ALFALFA (Arecibo Legacy Fast ALFA) Team Groups Project is a collaborative undertaking of faculty and students at 11 institutions, aimed at investigating properties of galaxy groups surveyed by the ALFALFA blind HI survey. As part of this project, we examine HI deficiency in the region surrounding galaxy group AWM3 using HI fluxes from ALFALFA and optical data from the Sloan Digital Sky Survey. The galaxy group includes 165 galaxies, of which 66 have 21cm line detections. The HI deficiency calculations reported here are based on comparisons to a sample of 1,624 reference galaxies in low-density environments recently reported by other members of the ALFALFA team. Their sample is taken from the alpha.40 data release and has several advantages over previous HI samples including a large number of high-quality detections and homogeneously measured HI fluxes. It provides a reliable set of reference galaxies for the HI deficiency calculations performed here. This work has been supported by NSF grants AST-0724918, AST-0725267 and AST-0725380.

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