搜索结果: 1-9 共查到“天文学 associations”相关记录9条 . 查询时间(0.062 秒)
Two generations in stellar complexes and associations in M 33 galaxy and their spatial correlation
generations stellar complexes associations galaxy spatial correlation
2011/7/29
Massive stellar content of stellar complexes and associations in M 33 is studied combining deep UBV photometry from the Local Group Survey (Massey et al. 2006) and JHK photometry from the 2MASS. Two b...
Improved distances to several Galactic OB associations
Improved distances several Galactic associations
2011/7/19
Based on uvbybeta photometry we study the structure of several Galactic star-forming fields. Lac OB1 is a compact association at 520+/-20 pc spatially correlated with a region of intense HII emission ...
The fractal spatial distribution of stars in open clusters and stellar associations
ISM structure open clusters and associations general stars formation
2010/11/1
The Interstellar Medium has a fractal structure, in the sense that gas and dust distribute in a hierarchical and self-similar manner. Stars in new-born cluster probably follow the same fractal pattern...
In Galactic studies a distinction is made between (open) star clusters and associations. For barely resolved objects at a distance of several Mpc this distinction is not trivial to make.
Chemical pattern across the young associations ONC and OB1b
Solar and Stellar Astrophysics (astro-ph.SR)
2010/10/8
Abundances of iron-peak and alpha-elements are poorly known in Orion, and the available measurements yield contradictory results. Aims. We measure accurate and homogeneous elemental abundances of the ...
An all-sky Atlas of Radio/X-ray Associations
atlases catalogs x-rays general quasars general x-rays stars radio continuum stars
2009/12/31
An all-sky comprehensive catalog of calculated radio and X-ray associations to optical objects is presented. Included are X-ray sources from XMM-Newton, Chandra and ROSAT catalogs, radio sources from ...
Photometric monitoring of binaries in open clusters and Associations：ngc6231
Photometric monitoring binaries in open clusters ngc6231
2009/6/17
Photometric monitoring of binaries in open clusters and Associations：ngc6231。
The primordial binary population in ob associations。
Survey of stellar associations using proper motions。