H I OBSERVATIONS OF FIVE GROUPS OF GALAXIES

2009/05/24 by E. Freeland, A. Stilp, E. Wilcots · 3 citations
Engineering · Physics and Astronomy · #Astronomy and Astrophysical Research #Disc galaxy #Elliptical galaxy #Galaxies: Formation, Evolution, Phenomena #Galaxy #Galaxy group #Group (periodic table) #Irregular galaxy #Lenticular galaxy #Space Technology and Applications #Spiral galaxy #Velocity dispersion #astro-ph.CO

paper · pdf · doi:10.1088/0004-6256/138/1/295

9 pages, 7 figures (slightly degraded in quality), emulateapj, accepted for publication in the Astronomical Journal

arxiv created 2009/05/24 · openalex publication_date 2009/06/11 · arxiv updated 2015/05/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

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): NGC 7582 (NGC 7552), USGC U207 (NGC 2759), USGC U070 (NGC 664), USGC U412 (NGC 3822), USGC U451 (NGC 4065). 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 h 45 m 27 s , 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.

Citations

• The HIPASS catalogue: ΩH i and environmental effects on the H i mass function of galaxies
• An X‐Ray Atlas of Groups of Galaxies
• Can Early‐Type Galaxies Evolve from the Fading of the Disks of Late‐Type Galaxies?
• A Redshift Survey of Nearby Galaxy Groups: The Shape of the Mass Density Profile
• The Arecibo Dual‐Beam Survey: The HiMass Function of Galaxies
• Morphology, Environment, and the HiMass Function
• Bent‐Double Radio Sources as Probes of Intergalactic Gas
• Evolution of compact groups and the formation of elliptical galaxies
• The UZC-SSRS2 Group Catalog
• The GEMS project: X-ray analysis and statistical properties of the group sample

Cited by

• Environmental processing of galaxies in H i-rich groups
• A deep Parkes H i survey of the Sculptor group and filament: H i mass function and environment
• MIGHTEE-HI: discovery of an H i -rich galaxy group at z = 0.044 with MeerKAT