An upper limit on the H I content of the Carina dwarf spheroidal galaxy

Journal Article · Mon Oct 01 00:00:00 EDT 1990 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/185846· OSTI ID:6163661

Mould, J R; Bothun, G D; Hall, P J; Staveley-Smith, L; Wright, A E ^[1]

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1. California Institute of Technology, Pasadena (USA) Michigan Univ., Ann Arbor (USA) Australia Telescope National Facility, Narrabi (Australia) Australia Telescope National Facility, Epping (Australia) Australia Telescope National Facility, Parkes (Australia)

Neutral hydrogen 21 cm measurements of the Carina dwarf spheroidal galaxy yield an upper limit on its H I content of about 1000 solar masses. For (M/L) about 30, this translates into an upper limit of 0.0001 on its fractional H I content. It is possible that Carina has efficiently cleansed itself of gas because red giant wind velocities are of the order of the escape velocity. It is then interesting to ask how Carina retained its gas for the first few billion of its existence. 21 refs.

• OSTI ID: 6163661
• Journal Information: Astrophysical Journal; (USA), Vol. 362; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
GALAXIES
ELLIPTICAL CONFIGURATION
H1 REGIONS
COSMIC GASES
HYDROGEN
INTERSTELLAR SPACE
LIMITING VALUES
MASS
RADIOWAVE RADIATION
STELLAR WINDS
VELOCITY
CONFIGURATION
COSMIC RADIO SOURCES
ELECTROMAGNETIC RADIATION
ELEMENTS
FLUIDS
GASES
NONMETALS
RADIATIONS
SPACE
STELLAR ACTIVITY
640105* - Astrophysics & Cosmology- Galaxies