Inferring Mass Loss Rates for Cool Luminous Stars from High-Resolution GHRS Spectra
نویسندگان
چکیده
منابع مشابه
Theoretical mass loss rates of cool main - sequence stars
Context. The stellar mass loss rate is important for the rotational evolution of a star and for its interaction with the circumstellar environment. The analysis of astrospheric absorption features enables an empirical determination of mass loss rates of cool stars other than the Sun. Aims. We develop a model for the wind properties of cool main-sequence stars, which comprises their wind ram pre...
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The effect of photon frequency redistribution by line branching on mass-loss rates for hot luminous stars is investigated. Monte Carlo simulations are carried out for a range of OB-star models which show that previous mass-loss calculations which neglect nonresonance line scattering overestimate mass-loss rates for luminous O stars by ∼ 20 per cent. For luminous B stars the effect is somewhat l...
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We present the results of high-resolution (1-0.4 Å) optical spectroscopy of a sample of very low-mass stars. These data are used to examine the kinematics of the stars at the bottom of the hydrogen-burning main sequence. No evidence is found for a significant difference between the kinematics of the stars in our sample with I–K > 3.5 (MBol ∼ 12.8) and those of more massive M-dwarfs (MBol ≈ 7 − ...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 2000
ISSN: 0074-1809
DOI: 10.1017/s0074180900002540