Rotation and Activity of Pre–Main‐Sequence Stars
نویسندگان
چکیده
منابع مشابه
Rotation and Activity of Preymain-sequence Stars
We present a study of rotation (v sin i) and chromospheric activity (H equivalent width) based on an extensive set of high-resolution optical spectra obtained with the MIKE instrument on the 6.5 m Magellan Clay telescope. Our targets are 74 FYM dwarfs in four young stellar associations, spanning ages from 6 to 30 Myr. By comparing H EWs in our sample to results in the literature, we see a clear...
متن کاملRotation and activity of pre-main-sequence stars
Rotation and activity are key parameters in stellar evolution and can be used to probe basic stellar physics. Here we present a study of rotation (measured as projected rotational velocity v sin i) and chromospheric activity (measured as Hα equivalent width) based on an extensive set of high-resolution optical spectra obtained with the MIKE instrument on the 6.5m Magellan Clay telescope. Our ta...
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There are obvious and direct ways in which the presence of binary companions may affect activity in OB stars through tidal interactions. In this review, however, I consider a more fundamental role for multiplicity and explore claims that the Be phenomenon may be intimately linked to binarity. I describe the binary channel for the formation of Be stars and the ongoing discussion about the relati...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2007
ISSN: 0004-637X,1538-4357
DOI: 10.1086/518361