Clarification of the nature of the galaxy [CFC97] Cen 05

A. Bouchard; G. S. Da Costa; H. Jerjen

doi:10.1086/426123

Clarification of the nature of the galaxy [CFC97] Cen 05

A. Bouchard^*, G. S. Da Costa, H. Jerjen

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

The galaxy [CFC97] Cen 05 has in the past been considered an H I-rich dwarf galaxy in the nearby Centaurus A group. We have used Australia Telescope Compact Array observations to show that the H I associated with [CFC97] Cen 05 by Côté et al. is most likely a Galactic high-velocity cloud that is centered ∼17′ from the optical image of the galaxy. At the optical location of the galaxy, which is not the one tabulated by Banks et al., there is no indication of the presence of H I for velocities less than the upper limit of the H I Parkes All-Sky Survey at ∼12,500 km s^-1. In addition, WFPC2 images of [CFC971 Cen 05 obtained from the Hubble Space Telescope archive reveal that this galaxy is in fact not a dwarf at all, but rather is a distant background spiral not associated with the Centaurus A group.

Original language	English
Pages (from-to)	1031-1034
Number of pages	4
Journal	Publications of the Astronomical Society of the Pacific
Volume	116
Issue number	825
DOIs	https://doi.org/10.1086/426123
Publication status	Published - Nov 2004

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title = "Clarification of the nature of the galaxy [CFC97] Cen 05",

abstract = "The galaxy [CFC97] Cen 05 has in the past been considered an H I-rich dwarf galaxy in the nearby Centaurus A group. We have used Australia Telescope Compact Array observations to show that the H I associated with [CFC97] Cen 05 by C{\^o}t{\'e} et al. is most likely a Galactic high-velocity cloud that is centered ∼17′ from the optical image of the galaxy. At the optical location of the galaxy, which is not the one tabulated by Banks et al., there is no indication of the presence of H I for velocities less than the upper limit of the H I Parkes All-Sky Survey at ∼12,500 km s-1. In addition, WFPC2 images of [CFC971 Cen 05 obtained from the Hubble Space Telescope archive reveal that this galaxy is in fact not a dwarf at all, but rather is a distant background spiral not associated with the Centaurus A group.",

author = "A. Bouchard and {Da Costa}, {G. S.} and H. Jerjen",

year = "2004",

month = nov,

doi = "10.1086/426123",

language = "English",

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pages = "1031--1034",

journal = "Publications of the Astronomical Society of the Pacific",

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T1 - Clarification of the nature of the galaxy [CFC97] Cen 05

AU - Bouchard, A.

AU - Da Costa, G. S.

AU - Jerjen, H.

PY - 2004/11

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N2 - The galaxy [CFC97] Cen 05 has in the past been considered an H I-rich dwarf galaxy in the nearby Centaurus A group. We have used Australia Telescope Compact Array observations to show that the H I associated with [CFC97] Cen 05 by Côté et al. is most likely a Galactic high-velocity cloud that is centered ∼17′ from the optical image of the galaxy. At the optical location of the galaxy, which is not the one tabulated by Banks et al., there is no indication of the presence of H I for velocities less than the upper limit of the H I Parkes All-Sky Survey at ∼12,500 km s-1. In addition, WFPC2 images of [CFC971 Cen 05 obtained from the Hubble Space Telescope archive reveal that this galaxy is in fact not a dwarf at all, but rather is a distant background spiral not associated with the Centaurus A group.

AB - The galaxy [CFC97] Cen 05 has in the past been considered an H I-rich dwarf galaxy in the nearby Centaurus A group. We have used Australia Telescope Compact Array observations to show that the H I associated with [CFC97] Cen 05 by Côté et al. is most likely a Galactic high-velocity cloud that is centered ∼17′ from the optical image of the galaxy. At the optical location of the galaxy, which is not the one tabulated by Banks et al., there is no indication of the presence of H I for velocities less than the upper limit of the H I Parkes All-Sky Survey at ∼12,500 km s-1. In addition, WFPC2 images of [CFC971 Cen 05 obtained from the Hubble Space Telescope archive reveal that this galaxy is in fact not a dwarf at all, but rather is a distant background spiral not associated with the Centaurus A group.

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JO - Publications of the Astronomical Society of the Pacific

JF - Publications of the Astronomical Society of the Pacific

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ER -

Clarification of the nature of the galaxy [CFC97] Cen 05

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