H I observations of five groups of galaxies

Abstract

We present the results of H I observations of five groups of galaxies spanning a range of velocity dispersion and spiral fraction (brightest optical group member in parenthesis): NGC7582 (NGC7552), USGC U207 (NGC2759), USGC U070 (NGC664), USGC U412 (NGC3822), USGC U451 (NGC4065). Neutral intragroup gas is detected in three of the five groups. We present the discovery of a previously uncataloged galaxy in the USGC U070 group at α(2000) = 01 h45m27s, δ(2000) = +0436′19″, which we are designating FSW J014526.92+043619.1. We compile an H I mass function for the group environment and find that the faint-end slope is consistent with being flat. © 2009. The American Astronomical Society. All rights reserved.