The subphotospherical velocity structure of the WR component of V444 Cygni

Details The subphotospherical velocity structure of the WR component of V444 Cygni The subphotospherical velocity structure of the WR component of V444 Cygni

Jan 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...189..109v&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 189, no. 1-2, Jan. 1988, p. 109-111.

Computer Science

Sound

4

Atmospheric Turbulence, Binary Stars, Photosphere, Sound Waves, Velocity Distribution, Wolf-Rayet Stars, Atmospheric Boundary Layer, Stellar Evolution, Stellar Gravitation

Scientific paper

It is shown that the acceleration generated by turbulence motion fields is able to reproduce the subphotospherical velocity structure of the WR component of V444 Cyg. The mechanical flux produced by this turbulence should be of the order of 3×1011erg s-1cm-2 and it is transported by outward propagating sound waves with an average period of 30 min to 1 h. The layer where dissipation of mechanical energy may become efficient corresponds to the layer with density ≡1×10-8g cm-3.

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