THE ARECIBO GALAXY ENVIRONMENT SURVEY. III. OBSERVATIONS TOWARD THE GALAXY PAIR NGC 7332/7339 AND THE ISOLATED GALAXY NGC 1156

Journal Article · Fri Oct 15 00:00:00 EDT 2010 · Astronomical Journal (New York, N.Y. Online)

DOI:https://doi.org/10.1088/0004-6256/140/4/1093· OSTI ID:21443218

Minchin, R F ^[1]; Momjian, E ^[2]; Auld, R; Davies, J I; Smith, M W. L.; Taylor, R ^[3]; Valls-Gabaud, D; Van Driel, W ^[4]; Karachentsev, I D ^[5]; Henning, P A ^[6]; O'Neil, K L ^[7]; Schneider, S; Stage, M D ^[8]

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1. Arecibo Observatory, HC03 Box 53995, Arecibo, PR 00612 (United States)
2. NRAO, Dominici Science Operations Center, P.O. Box O, 1003 Lopezville Road, Socorro, NM 87801 (United States)
3. School of Physics and Astronomy, Cardiff University, Cardiff, CF24 3YB (United Kingdom)
4. GEPI, CNRS UMR 8111, Observatoire de Paris, 5 Place Jules Janssen, 92195 Meudon Cedex (France)
5. Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnii Arkhyz, Zelencukskaya, Karachai-Cherkessia 369167 (Russian Federation)
6. Department of Physics and Astronomy, University of New Mexico, 800 Yale Boulevard Northeast, Albuquerque, NM 87131 (United States)
7. NRAO Green Bank, P.O. Box 2, Route 28/92, Green Bank, WV 24944 (United States)
8. Department of Astronomy, University of Massachusetts, 710 North Pleasant Street, Amherst, MA 01003 (United States)

Two 5 deg{sup 2} 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 {approx}0.065 ({approx}20,000 km s{sup -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.

• OSTI ID: 21443218
• Journal Information: Astronomical Journal (New York, N.Y. Online), Vol. 140, Issue 4; Other Information: DOI: 10.1088/0004-6256/140/4/1093; ISSN 1538-3881
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
GALAXIES
HYDROGEN
POTENTIALS
RED SHIFT
TELESCOPES
ELEMENTS
NONMETALS