Claude Carignan et al. 1998 The Astronomical Journal 116 1690 doi:10.1086/300540
Detection of H I Associated with the Sculptor Dwarf Spheroidal Galaxy
FREE ISSUEClaude Carignan1, Sylvie Beaulieu2, Stéphanie Côté3, Serge Demers1 and Mario Mateo4
Show affiliations Neutral hydrogen (H I) has been detected in the Local Group dwarf spheroidal galaxy Sculptor with the 64 m Parkes single-dish telescope and mapped with the Australia Telescope synthesis array. Most of the detected H I is in two clouds ~15'–20' away from the optical center. The gas is observed at the same systemic velocity as the stars, but at ≥125 km s-1 away from the Magellanic Stream components in that region. A lower limit to the H I mass of 3.0 × 104 M
is derived from the synthesis observation for an (MH I/LB) 
0.02. This amount of H I is compatible with mass loss expected from normal giants, even if only 10% of the gas is retained by the galaxy in its neutral form.
- Keywords
galaxies: dwarf; galaxies: individual (Sculptor); Local Group; techniques: interferometric
- Dates
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Issue 4 (1998 October)
Received 1998 February 17
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Detection of H I Associated with the Sculptor Dwarf Spheroidal Galaxy
Claude Carignan et al. 1998 The Astronomical Journal 116 1690
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