Precision Of Parallaxes From Automatic And Manual Measures From New Parallaxes Of The Hyades Cluster Region
نویسندگان
چکیده
منابع مشابه
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We compare the accurate empirical mass-luminosity (M-L) relation based on five Hyades binary systems to predictions of stellar models calculated with various input parameters (helium, metallicity and age) or physics (mixing-length ratio, model atmosphere, equation of state and microscopic diffusion). Models based on a helium content Y∼0.28 inferred from the ∆Y/∆Z enrichment law are more than 3σ...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1988
ISSN: 0074-1809
DOI: 10.1017/s0074180900140045