The stellar activity-rotation relationship
نویسندگان
چکیده
منابع مشابه
The stellar activity - rotation relationship
Key words stars: activity – stars: coronae – stars: late-type – stars: magnetic fields – stars: rotation – X-rays: stars Using a new catalog of 824 solar and late-type stars with measured X-ray luminosities and rotation periods we have studied the relationship between rotation and stellar activity that is believed to be a probe of the underlying stellar dynamo. Using an unbiased subset of the s...
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We present a sample of 824 solar and late-type stars with X-ray luminosities and rotation periods. This is used to study the relationship between rotation and stellar activity and derive a new estimate of the convective turnover time. From an unbiased subset of this sample the power law slope of the unsaturated regime, LX/Lbol ∝ Ro , is fit as β = −2.70±0.13. This is inconsistent with the canon...
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Our ability to determine stellar ages from measurements of stellar rotation, hinges on how well we can measure the dependence of rotation on age for stars of different masses. Rotation periods for stars in open clusters are essential to determine the relations between stellar age, rotation, and mass (color). Until recently, ambiguities in v sin i data and lack of cluster membership information,...
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Abstract. Stellar rotation influences our understanding of stellar structure and evolution, binary systems, clusters etc. and therefore the benefits of a large and highly accurate database on stellar rotation, obtained by GAIA, will be manifold. To study the prospects of GAIA measurement of projected rotational velocities vrot sin i, we use synthetic stellar spectra to simulate the determinatio...
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ژورنال
عنوان ژورنال: Astronomische Nachrichten
سال: 2013
ISSN: 0004-6337
DOI: 10.1002/asna.201211764