The helium stars having the most rapid axial rotation.
نویسندگان
چکیده
منابع مشابه
Rapid uniform rotation of protoneutron stars
Rapid uniform rotation of newborn neutron stars (protoneutron stars) is studied for a range of internal temperatures and entropies per baryon predicted by the existing numerical simulations. Calculations are performed using general relativistic equations of hydrostatic equilibrium of rotating, axially symmetric stars. Stability of rotating configurations with respect to mass shedding and the ax...
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We discuss the physics of the ΩΓ– Limit, i.e. when the star is unbound as a result of both rotation and radiation pressure. We suggest that the ΩΓ– Limit is what makes the Humphreys–Davidson Limit. Stellar filiations are discussed, with an emphasis on the final stages, in particular on the final masses, their angular momentum and the chemical yields with account of rotation. A possible relation...
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High resolution spectra of the Hei587.6, 667.8 706.5 and 728.1 nm lines have been obtained to test the prediction (notably by Vauclair et al. 1991) that helium abundance should decrease with depth in helium rich stars and increase in helium weak stars. A sample of B-type main sequence stars, with expected solar abundances and non stratified atmospheres, have also been observed in order to compa...
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The smallest molecular cores observed to date have at least ∼6 orders of magnitude greater angular momentum per unit mass than the Sun, suggesting that they would greatly exceed the breakup velocity if no angular momentum was lost during the star formation process. Therefore, an angular momentum regulation mechanism must be at work in the pre-main-sequence phase, and disks are often invoked as ...
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ژورنال
عنوان ژورنال: The Astronomical Journal
سال: 1944
ISSN: 0004-6256
DOI: 10.1086/105823