Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...353..281n&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 353, April 10, 1990, p. 281-289.
Astronomy and Astrophysics
Astronomy
12
Interstellar Gas, Interstellar Matter, Line Of Sight, Ultraviolet Spectra, Wolf-Rayet Stars, Absorption Spectra, Infrared Astronomy Satellite, Iue, Radial Velocity, Stellar Envelopes
Scientific paper
The interstellar medium was studied in the direction to the WR stars HD 96548 and HD 97152, and the results are reported. New observational data on the UV spectra of several field stars near both these WR stars are presented. The high-velocity gas seen in the spectra of these stars suggests that the detected expanding interstellar gas structure consists of two OB cluster supershells. The presence of high-velocity absorption components in one of five field star spectra in the direction of the more isolated WR star HD 96548 suggests that this expanding gas does not originate from the optical ring nebula RCW 58 surrounding HD 96548, as previously believed, but instead indicates the detection of a previously unknown expanding interstellar shell in this line of sight.
Fesen Robert A.
Nichols-Bohlin Joy
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