A further discussion on the mass loss of Mira stars
Abstract
Mass-loss rates for 42 Mira-type variables with a known period, spectral type, and associated double-peak OH maser spectrum are calculated on the assumption of mass loss via a stellar wind driven by radiation pressure. The relations between mass-loss rate and luminosity, pulsation period, maser-shell expansion velocity, and effective temperature are determined. The results show that the mass-loss rate of a Mira-type variable is proportional to the first power of luminosity, is linearly correlated with both pulsation period and maser-shell expansion velocity, but is not correlated with effective temperature. It is concluded that pulsation period and maser-shell expansion velocity are linearly correlated for Mira stars.
- Publication:
-
Acta Astrophysica Sinica
- Pub Date:
- June 1982
- Bibcode:
- 1982AcApS...2...49S
- Keywords:
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- Late Stars;
- Mira Variables;
- Stellar Envelopes;
- Stellar Mass Ejection;
- Stellar Winds;
- Variable Stars;
- Hydroxyl Emission;
- Interstellar Masers;
- Regression Analysis;
- Stellar Luminosity;
- Stellar Spectra;
- Stellar Temperature;
- Astrophysics