Clarification of the Nature of the Galaxy [CFC97] Cen 05 | Zendy

Antoine Bouchard | Zendy; G. S. Da Costa | Zendy; Helmut Jerjen | Zendy

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Clarification of the Nature of the Galaxy [CFC97] Cen 05

Author(s) -

Antoine Bouchard,

G. S. Da Costa,

Helmut Jerjen

Publication year - 2004

Publication title -

publications of the astronomical society of the pacific

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.294

H-Index - 172

eISSN - 1538-3873

pISSN - 0004-6280

DOI - 10.1086/426123

Subject(s) - physics , astrophysics , galaxy , centaurus a , dwarf galaxy , spiral galaxy , irregular galaxy , astronomy , sky , local group , interacting galaxy , hubble space telescope , telescope , galaxy group , elliptical galaxy , radio galaxy

The galaxy CFC97 Cen 05 has in the past been considered an HI-rich dwarfgalaxy in the nearby Centaurus A group. We have used Australia TelescopeCompact Array observations to show that the HI associated with CFC97 Cen 05 byCote et al. (1997) is most likely a Galactic High Velocity Cloud that iscentered ~17' from the optical image of the galaxy. At the optical location ofthe galaxy, which is not that tabulated by Banks et al. (1999), there is noindication of the presence of HI for velocities less than the upper limit ofthe HIPASS survey at ~12,500 km/s. In addition, WFPC2 images of CFC97 Cen 05obtained from the HST Archive reveal that this galaxy is in fact not a dwarf atall, but rather is a distant background spiral not associated with theCentaurus A group.Comment: accepted for publication in the PASP (November 2004

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