FCC-35 AND ITS H-I COMPANION - MULTIWAVELENGTH OBSERVATIONS AND INTERPRETATION

Citation
Me. Putman et al., FCC-35 AND ITS H-I COMPANION - MULTIWAVELENGTH OBSERVATIONS AND INTERPRETATION, The Astronomical journal, 115(6), 1998, pp. 2345-2355
Citations number
44
Categorie Soggetti
Astronomy & Astrophysics
Journal title
ISSN journal
00046256
Volume
115
Issue
6
Year of publication
1998
Pages
2345 - 2355
Database
ISI
SICI code
0004-6256(1998)115:6<2345:FAIHC->2.0.ZU;2-K
Abstract
The Fornax Cluster galaxy FCC 35 shows an unusual multiply peaked inte grated H I profile. We have now observed FCC 35 with the Australia Tel escope Compact Array and have found a compact H I source with M-HI = 2 .2 x 10(8) M-. and a spatially overlapping complex of H I gas with the same mass. By combining optical observations with the H I data, we ar e able to identify FCC 35 as a young compact source of star formation with a nearby intergalactic H I cloud that is devoid of stars. We clas sify FCC 35 as a blue compact dwarf or H II galaxy, having large amoun ts of neutral hydrogen, very blue colors (U-V = 0.1), and a low-metall icity spectrum with strong narrow emission lines. Together with the pr esence of the H I cloud, this suggests that FCC 35 is the result of a recent interaction within the Fornax Cluster.