Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...124...77d&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 124, no. 1, July 1983, p. 77-83.
Astronomy and Astrophysics
Astrophysics
19
Early Stars, Hydrogen Clouds, Nebulae, Stellar Models, Stellar Winds, Ionization, Stellar Evolution
Scientific paper
The biconical nebula S 106 has a kinematic structure strongly suggestive of the interaction between a stellar wind and a surrounding nonhomogeneous gas distribution. The interaction is modeled as that of a steady wind from an early-type star with a symmetric exponentially decreasing gas distribution. The model can be fitted to the observations if it is assumed that the open ends of the lobes result from a blow-out of shocked stellar wind gas. The exciting star requires a Lyman continuum photon output rate of about 10 to the 47th - 10 to the 48th per s and a mechanical luminosity of about 10 to the 35th erg/s to account for observed parameters of S 106. These values are consistent with those measured for stars of spectral types O9.5V-B0V. This predicted spectral type is in excellent agreement with that deduced from infrared data.
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