搜索结果: 1-6 共查到“天体物理学 main-sequence”相关记录6条 . 查询时间(0.075 秒)
Abundance anomalies in pre-main-sequence stars: Stellar evolution models with mass loss
Diffusion — stars chemically peculiar — stars mass–loss — stars pre–main-sequence — stars evolution — stars
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2010/11/12
Aims. The effects of atomic diffusion on internal and surface abundances of A and F pre–main-sequence stars with mass loss are studied in order to determine at what age the effects materialize, as wel...
Absolute properties of BG Ind - a bright F3 system just leaving the Main Sequence
Solar and Stellar Astrophysics (astro-ph.SR)
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2010/12/27
We present photometric and spectroscopic analysis of the bright detached eclipsing binary BG Ind. The masses of the components are found to be 1.428 +- 0.008 and 1.293 +- 0.008 Msun and the radii to b...
Extreme Enhancements of r-process Elements in the Cool Metal-Poor Main-Sequence Star SDSS J2357-0052
Solar and Stellar Astrophysics (astro-ph.SR)
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2010/12/23
We report the discovery of a cool metal-poor, main-sequence star exhibiting large excesses of r-process elements. This star is one of two newly discovered cool subdwarfs (effective temperatures of 500...
Old main-sequence turnoff photometry in the SMC
main-sequence photometry SMC
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2009/6/25
Old main-sequence turnoff photometry in the SMC。
The pre-main sequence population of NGC 6530 in M8
NGC 6530 M8
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2009/6/25
The pre-main sequence population of NGC 6530 in M8。
SURFACE GRAVITY ALONG THE MAIN SEQUENCE
SURFACE GRAVITY MAIN SEQUENCE
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2009/4/8
On the basis of the empirical distributions of the radii and critical
rotation velocities for normal stars an analysis concerning the surface-gravity
(g(M)) distribution along the main sequence is u...