A stellar wind blown bubble associated with the Wolf-Rayet star HD 197406

Details A stellar wind blown bubble associated with the Wolf-Rayet star HD 197406 A stellar wind blown bubble associated with the Wolf-Rayet star HD 197406

Mar 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990aj.....99..857d&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 99, March 1990, p. 857-868.

Astronomy and Astrophysics

Astronomy

40

Binary Stars, Radio Astronomy, Stellar Winds, Wolf-Rayet Stars, Black Holes (Astronomy), Infrared Astronomy Satellite, Radio Emission, Spectral Emission, Stellar Magnitude

Scientific paper

A 2 x 2 deg field centered on the position HD 197406 was surveyed in the H I 21-cm line and in the 1420 and 408 MHz radio continuum. The results show the existence of a nearly complete ring-shaped H I shell and a small spherical bubble concentric with the star and immersed within the H I shell. The observations are used to show that HD 197406 has a distance of 4.5 kpc and an Mv = -5.4 mag. It is suggested that the large shell was created during previous evolutionary stages of the binary, while the small bubble was recently blown by the Wolf-Rayet wind.

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