One of the key questions in Astrophysics concerns the issue of whether there exists an upper-mass limit to stars, and if so, what physical mechanism sets this limit? The answer to this question might also determine if the upper-mass limit is metallicity
The evolution of mass-losing very massive stars in the 500–10000 M ⊙ range has been investigated for two different initial compositions, ( X, Z )=(0.8,0.0) and ( X, Z )=(1.0,0.0). The evolutionary tracks are governed by two opposing factors which are the increase in the mean ...
The stellar initial mass function (IMF) is commonly interpreted to be a scale-invariant probability density distribution function (PDF) such that many small clusters yield the same IMF as one massive cluster of the same combined number of stars. Observat
such, this eruptive mode of mass loss could also play a pivotal role in the evolution and ultimate fate of massive metal-poor stars in the early universe. If they occur in these Population III stars, such eruptions would also profoundly affect the chemical yield and types of remnant...
Very massive stars and Nitrogen-emitting galaxies 来自 arXiv.org 喜欢 0 阅读量: 3 作者: JS Vink 摘要: Recent studies of high-redshift galaxies using JWST, such as GN-z11 revealed highly elevated levels of nitrogen (N). This phenomenon extends to gravitationally-lensed galaxies like the ...
Also, hydrogen mass fractions of the most luminous WNH stars are higher than those of luminous blue variables (LBVs). While on the main sequence, a star's mass is reduced due to winds and its luminosity slowly rises, so the star increases its Eddington factor, which in turn strongly ...
This latest addition to the still-small family of CBPs defies the current trend of known short-period planets orbiting near the stability limit of binary stars. Unlike the previous discoveries, the planet revolving around the eclipsing binary system KOI-2939 has a very long orbital period (~...
Six intermediate-mass stars with far-infrared excess: a search for evolutionary connections We present the results of high-resolution spectroscopic, low-resolution spectrophotometric and spectropolarimetric and broad-band multicolour observations ... AS Miroshnichenko,CL Mulliss,KS Bjorkman,... - 《Mon...
the masses and radii of the neutron stars in the kilohertz QPO sources and provide new constraints on the equation of state of matter at high densities... MC Miller,FK Lamb,D Psaltis - 《Astrophysical Journal》 被引量: 592发表: 1996年 Accurate masses of very low mass stars: III 16 new...
Very Low-Mass Stars and Brown Dwarfs: Rotation Law and Magnetic Field for M Dwarf Models 来自 Semantic Scholar 喜欢 0 阅读量: 9 作者:G. Rüdiger,M. Küker DOI: 10.1017/CBO9780511564758.021 年份: 2000 收藏 引用 批量引用 报错 分享