Journal
ASTRONOMY & ASTROPHYSICS
Volume 465, Issue 2, Pages 593-601Publisher
EDP SCIENCES S A
DOI: 10.1051/0004-6361:20066633
Keywords
methods : statistical; stars : general; stars : late-type; stars : mass-loss; stars : winds, outflows
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To test our new, improved Reimers-type mass-loss relation, given by Schroder & Cuntz in 2005 ( ApJ, 630, L73), we take a look at the best studied galactic giants and supergiants - particularly those with spatially resolved circumstellar shells and winds, obtained directly or by means of a companion acting as a probing light source. Together with well- known physical parameters, the selected stars provide the most powerful and critical observational venues for assessing the validity of parameterized mass- loss relations for cool winds not driven by molecules or dust. In this study, star by star, we compare our previously published relation with the original Reimers relation ( 1975, Mem. Roy. Soc. Liege 6. Ser. 8, 369), the Lamers relation ( 1981, ApJ, 245, 593), and the two relations by de Jager and his group ( 1988, A& AS, 72, 259; 1990, A& A, 231, 134). The input data, especially the stellar masses, have been constrained using detailed stellar evolution models. We find that only the relationship by Schroder & Cuntz agrees, within the error bars, with the observed mass-loss rates for all giants and supergiants.
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