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The Arecibo Galaxy Environment Survey. III. Observations toward the galaxy pair NGC 7332/7339 and the isolated galaxy NGC 1156’

Minchin, Robert Frank, Momjian, E., Auld, Robbie Richard, Davies, Jonathan Ivor, Valls-Gabaud, D., Karachentsev, I. D., Henning, P. A., O'Neil, K. L., Schneider, S., Smith, Matthew William, Stage, M. D., Taylor, R. and van Driel, W. 2010. The Arecibo Galaxy Environment Survey. III. Observations toward the galaxy pair NGC 7332/7339 and the isolated galaxy NGC 1156’. Astronomical Journal 140 (4) , pp. 1093-1118. 10.1088/0004-6256/140/4/1093

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Abstract

Two 5 deg2 regions around the NGC 7332/9 galaxy pair and the isolated galaxy NGC 1156 have been mapped in the 21 cm line of neutral hydrogen (H I) with the Arecibo L-band Feed Array out to a redshift of ~0.065 (~20,000 km s–1) as part of the Arecibo Galaxy Environment Survey. One of the aims of this survey is to investigate the environment of galaxies by identifying dwarf companions and interaction remnants; both of these areas provide the potential for such discoveries. The neutral hydrogen observations were complemented by optical and radio follow-up observations with a number of telescopes. A total of 87 galaxies were found, of which 39 (45%) were previously cataloged and 15 (17%) have prior redshifts. Two dwarf galaxies have been discovered in the NGC 7332 group and a single dwarf galaxy in the vicinity of NGC 1156. A parallel optical search of the area revealed one further possible dwarf galaxy near NGC 7332.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Uncontrolled Keywords: galaxies: individual (NGC 7332, NGC 7339); radio lines: galaxies; surveys
Publisher: IOP Science
ISSN: 0004-6256
Last Modified: 04 Jun 2017 04:05
URI: http://orca-mwe.cf.ac.uk/id/eprint/32584

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