A Critical Evaluation of Mass-Loss Rates and Wind Properties of Evolved Late-Type Stars

Author
Abstract

We evaluate the accuracy with which the properties of late-type giant star winds can be estimated by fitting ultraviolet line profiles and radio continuum emission. Our test cases include the stars $\alpha$ TrA (K4 II), $\lambda$ Vel (K4 Ib-II), and $\zeta$ Aur (K4 Ib + B5 V). Of particular interest is the sensitivity of the line profiles to the wind parameters Ṁ, v∞, vturb, $\beta$, and Twind. We are finding that while accurate and reliable values of Ṁ are difficult to obtain, the most reliable values come from the application of two or more independent techniques.

Year of Conference
1998
Start Page or Article ID
30-39
Publisher
Springer Berlin Heidelberg
Conference Location
Berlin, Heidelberg
ISBN Number
978-3-540-68597-5
DOI
10.1007/978-3-540-68597-5_5
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Publication Status
JILA PI
JILA Topics
Conference Proceedings