搜索结果: 1-6 共查到“星系动力学 Galactic”相关记录6条 . 查询时间(0.093 秒)
The long-term millimeter activity of active galactic nuclei
Galaxies: active — Quasars: general — Radiation mechanisms: non-thermal
2011/10/18
We analyze the long-term evolution of the fluxes of six active galactic nuclei (AGN) - 0923+392, 3C 111, 3C 273, 3C 345, 3C 454.3, and 3C 84 - in the frequency range 80-267 GHz using archival calibrat...
Improved distances to several Galactic OB associations
Improved distances several Galactic associations
2011/10/11
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 ...
Adaptive optics assisted near-infrared polarization measurements of sources in the Galactic Center
Galaxy: center - Polarization - dust, extinction - Infrared: stars
2011/10/11
The goals of this work are to provide NIR polarimetry of the stellar sources in the central pc at the resolution of an 8m telescope for the first time, along with new insights into the nature of the k...
The Galactic evolution of phosphorus
Stars: abundances – Stars: atmospheres – Line: formation – Galaxy: evolution – Galaxy: disk – radiative transfer
2011/10/9
As a galaxy evolves, its chemical composition changes and the abundance ratios of different elements are powerful probes of the underlying evolutionary processes. Phosphorous is an element whose evolu...
Superbubbles vs Super-galactic winds。
GALACTIC SUBSYSTEMS ON THE BASIS OF CUMULATIVE DISTRIBUTION OF SPACE VELOCITIES
Galaxy kinematics and dynamics-structure-solar neighbourhood
2009/1/15
A sample containing 4 614 stars with available space velocities and
high-quality kinematical data from the Arihip Catalogue is formed. For the purpose
of distinguishing galactic subsystems the cumul...