Abundances and physical conditions in a high-velocity cloud

Details Abundances and physical conditions in a high-velocity cloud Abundances and physical conditions in a high-velocity cloud

Apr 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980esasp.157...13p&link_type=abstract

The second European International Ultraviolet Explorer (IUE) Conference, held 26-28 March 1980 in Tübingen, West Germany. Edited

Astronomy and Astrophysics

Astronomy

7

Clouds, Interstellar Gas, Interstellar Matter, Iue, Ultraviolet Astronomy, Abundance, Calcium, Carbon, Density (Mass/Volume), High Speed, Ions, Silicon, Sodium

Scientific paper

The physical conditions in the 'high-velocity cloud' in the direction of HD 175754 are discussed, based on the high-dispersion International Ultraviolet Explorer (IUE) measurements. It was found that the abundances are very close to solar. Although the oxygen (and presumably also the hydrogen) is mostly neutral, the ionization is higher than expected from a neutral cloud. Consequences for the ionization and heating of the interstellar medium in general are discussed.

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