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 180125 (V1447 Aql)


目录

图像

上传图像

DSS Images   Other Images


相关文章

The 74th Special Name-list of Variable Stars
We present the Name-list introducing GCVS names for 3153 variable starsdiscovered by the Hipparcos mission.

An Einstein Observatory SAO-based catalog of B-type stars
About 4000 X-ray images obtained with the Einstein Observatory are usedto measure the 0.16-4.0 keV emission from 1545 B-type SAO stars fallingin the about 10 percent of the sky surveyed with the IPC. Seventy-fourdetected X-ray sources with B-type stars are identified, and it isestimated that no more than 15 can be misidentified. Upper limits to theX-ray emission of the remaining stars are presented. In addition tosummarizing the X-ray measurements and giving other relevant opticaldata, the present extensive catalog discusses the reduction process andanalyzes selection effects associated with both SAO catalog completenessand IPC target selection procedures. It is concluded that X-rayemission, at the level of Lx not less than 10 exp 30 ergs/s, is quitecommon in B stars of early spectral types (B0-B3), regardless ofluminosity class, but that emission, at the same level, becomes lesscommon, or nonexistent, in later B-type stars.

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:天鷹座
右阿森松:19h14m58.11s
赤纬:+10°24'33.8"
视星:7.38
距离:404.858 天文距离
右阿森松适当运动:3.8
赤纬适当运动:-2.9
B-T magnitude:7.372
V-T magnitude:7.38

目录:
适当名称V1447 Aql
  (Edit)
HD 1989HD 180125
TYCHO-2 2000TYC 1045-567-1
USNO-A2.0USNO-A2 0975-14416682
HIPHIP 94588

→ 要求更多目录从vizier