The Arecibo Legacy Fast ALFA Survey

HI Properties of the Rich Galaxy Group Zwicky 1400+0949 from the ALFALFA HI Survey

Thomas J. Balonek (Colgate/NAIC) and the ALFALFA Consortium

The Zwicky Cluster 1400+0949 (also known as the NGC 5416 group), one of the richest nearby galaxy groups, has been mapped as part of the Arecibo Legacy Fast ALFA (ALFALFA) extragalactic HI blind survey. We determine group membership using the observed HI velocities or optical redshifts for non-detected galaxies. We present a catalog and atlas of ALFALFA HI detections in this cluster, cz ~6000 km/s, and investigate the HI properties of members.

This work has been partially supported by NSF grants AST-0307661 and AST-0607007, by a grant from the Brinson Foundation, by Colgate University (the Faculty Research Council and the Division of Natural Sciences and Mathematics), and by NAIC.