The violent interstellar environment around the Wolf-Rayet star HD 192163

Details The violent interstellar environment around the Wolf-Rayet star HD 192163 The violent interstellar environment around the Wolf-Rayet star HD 192163

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aj....105..672n&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 105, no. 2, p. 672-690.

Astronomy and Astrophysics

Astronomy

32

Aerospace Environments, Interstellar Matter, Stellar Evolution, Stellar Mass Ejection, Stellar Winds, Wolf-Rayet Stars, Electromagnetic Interference, Infrared Imagery, Iue, Optical Filters, Ultraviolet Spectra

Scientific paper

IRAS Skyflux IR images, high-dispersion IUE UV spectra, optical spectra, and optical interference filter images are used to investigate the nature of the interstellar environment around the Wolf-Rayet star HD 192163. IRAS images show an apparent 1.5 x 1.8 deg IR emission shell very nearly centered on HD 192163, which is designated G75.5+2.4. It is suggested that this shell is a possible unrecognized SNR with an estimated age of not less than 100,000 yr if at the assumed 1.8-kpc distance of HD 192163. A well-defined 2 x 4.5 deg region of weak IR emission lying to the southeast of HD 192163 appears to be the IR signature of the Cyg OB1 superbubble. Analysis of IUE spectra shows that high-velocity components of UV interstellar absorption lines are present for both high and low ionization lines in 18 of 22 stars located in the Cyg OB1/OB3 direction with a velocity range of +/- 90 km/s. A possible evolutionary history for this region is outlined.

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