搜索结果: 1-5 共查到“实测天体物理学 Stellar”相关记录5条 . 查询时间(0.015 秒)
Dynamos in Stellar Convection Zones: of Wreaths and Cycles
Dynamos Stellar Convection Zones Wreaths and Cycles
2010/11/15
We live near a magnetic star whose cycles of activity are driven by dynamo action beneath the surface. In the solar convection zone, rotation couples with plasma motions to build
highly organized mag...
The Space Interferometry Mission Astrometric Grid Giant-Star Survey. III. Basic Stellar Parameters for an Extended Sample
stars abundances fundamental parameters atmospheres latetype rotation
2010/11/10
We present results of high resolution ( 55000) spectral observations of 830 photometrically pre-selected candidate red giants in the magnitude range of V = 9-12. We develop a pipeline for automated d...
The evolution of massive binaries in a dense stellar cluster environment
Solar and Stellar Astrophysics (astro-ph.SR)
2011/1/5
Massive stars are among the most important objects in the Universe and many (most?) of them are formed in binaries. A selection of observational and theoretical facts that illustrate the importance of...
Hierarchical Stellar Structures in the Local Group Dwarf Galaxy NGC 6822
Galaxy Astrophysics (astro-ph.GA) Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/28
We present a comprehensive study of the star cluster population and the hierarchical structure in the clustering of blue stars with ages <~ 500 Myr in the Local Group dwarf irregular galaxy NGC 6822. ...
Stellar and substellar initial mass function: a model that implements gravoturbulent fragmentation and accretion
Solar and Stellar Astrophysics (astro-ph.SR) Galaxy Astrophysics (astro-ph.GA)
2010/12/28
In this work, we derive the stellar initial mass function (IMF) from the superposition of mass distributions of dense cores, generated through gravoturbulent fragmentation of unstable clumps in molecu...