A model for the wind of the M supergiant VX Sagittarii

Details A model for the wind of the M supergiant VX Sagittarii A model for the wind of the M supergiant VX Sagittarii

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...238..256p&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 238, no. 1-2, Nov. 1990, p. 256-264. Research supported by ASTRON.

Computer Science

Sound

9

Astronomical Models, Interstellar Masers, M Stars, Stellar Winds, Supergiant Stars, Velocity Distribution, Cosmic Dust, Hydrodynamics, Hydroxyl Radicals, Radiative Transfer, Silicon Oxides, Sound Waves, Stellar Mass Ejection, Water

Scientific paper

The velocity distribution of the stellar wind from the M supergiant VX Sgr deduced from interferometric measurements of maser lines by Chapman and Cohen (1986) has been modeled using the linearized theory of stellar winds driven by short period sound waves proposed by Pijpers and Hearn (1989) and the theory of stellar winds driven by short period shocks proposed by Pijpers and Habing (1989). The effect of the radiative forces on the dust formed in the wind is included in a simple way. Good agreement with the observations is obtained by a range of parameters in the theory. A series of observations of the maser lines at invervals of one or a few days may provide additional constraints on the interpretation.

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