首页     开始     To Survive in the Universe    
Inhabited Sky
    News@Sky     天文图片     收集     论坛     Blog New!     常见问题     新闻     登录  

HD 1084


目录

图像

上传图像

DSS Images   Other Images


相关文章

The Origins and Evolutionary Status of B Stars Found Far from the Galactic Plane. I. Composition and Spectral Features
The existence of faint blue stars far above the Galactic plane that havespectra that are similar to nearby Population I B stars presents severalinteresting questions. Among them are the following: Can a Population IB star travel from the disk to a position many kiloparsecs above theplane in a relatively short main-sequence lifetime? Is it possible thatsingle massive star formation is occurring far from the Galactic plane?Are these objects something else masquerading as main-sequence B stars?This paper (the first of two) analyzes the abundances of a sample ofthese stars and reveals several that are chemically similar to nearbyPopulation I B stars, whereas others clearly have abundance patternsmore like those expected in blue horizontal-branch (BHB) orpost-asymptotic giant branch stars. Several of those with old evolvedstar abundances also have interesting features of note in their spectra.We also consider why this sample does not have any classical Be starsand identify at least two nearby solar-metallicity BHB stars.Based on observations made at the 2.1 m Otto Struve Telescope ofMcDonald Observatory operated by the University of Texas at Austin.

提交文章


相关链接

  • - 没有找到链接 -
提交链接


下列团体成员


观测天体数据

星座:雙魚座
右阿森松:00h15m09.87s
赤纬:+17°41'30.0"
视星:9.003
距离:167.504 天文距离
右阿森松适当运动:55.9
赤纬适当运动:10.7
B-T magnitude:9.537
V-T magnitude:9.048

目录:
适当名称   (Edit)
HD 1989HD 1084
TYCHO-2 2000TYC 1182-1406-1
USNO-A2.0USNO-A2 1050-00080567
HIPHIP 1214

→ 要求更多目录从vizier