On the internal rotation of early-type stars: Do they have rapidly rotating core?
Küçük Resim Yok
Tarih
2003
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Astronomical Soc Pacific
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Early-type stars in some eclipsing binary systems have such small radii (and low luminosity) that only models near the zero-age-main-sequence with a heavy element abundance less than, or a hydrogen larger than, the solar value become in agreement. This result is contrary to what we expect from the current understanding of the theory of stellar evolution. As an alternative point of view, we construct differentially rotating models of such stars in some eclipsing binaries. Theoretical apsidal advance rate from these models are also in good agreement with observed rate. The rotational properties of stellar interiors vary from system to system and may be the key point for understanding chemical peculiarities and the magnetic nature of early-type stars. For further improvements in understanding the distribution of angular momentum within the stars, 3-dimensional models considering magnetohydrodynamic processes are indispensable.
Açıklama
3D Stellar Evolution Workshop -- JUL 22-26, 2002 -- UNIV CALIF DAVIS, DEPT APPL SCI, LIVERMORE, CA
Anahtar Kelimeler
Kaynak
3D Stellar Evolution
WoS Q Değeri
N/A
Scopus Q Değeri
Cilt
293
