High-velocity interstellar gas in the lines of sight to the Wolf-Rayet stars HD 97152 and HD 96548

Journal Article · Sun Apr 01 04:00:00 EDT 1990 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/168615· OSTI ID:7040960

Nichols-bohlin, J; Fesen, R A ^[1]

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1. IUE Observatory, Greenbelt, MD (USA) Colorado Univ., Boulder (USA)

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. 42 refs.

• OSTI ID: 7040960
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 353; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640102 -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION SPECTRA
COSMIC GASES
ELECTROMAGNETIC RADIATION
EXPANSION
FLUIDS
GASES
INFRARED RADIATION
INTERSTELLAR SPACE
MAIN SEQUENCE STARS
MORPHOLOGY
ORIGIN
RADIAL VELOCITY
RADIATIONS
SATELLITES
SPACE
SPECTRA
STARS
ULTRAVIOLET SPECTRA
VELOCITY
WOLF-RAYET STARS