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 222996


目录

图像

上传图像

DSS Images   Other Images


相关文章

The late A-type stars - Refined MK classification, confrontation with Stromgren photometry, and the effects of rotation
The MK spectral classification for late A-type stars is refined and theeffects of rotation of spectral classification and uvby(beta) photometryfor these stars are examined. It is found that, for A3 stars, the4417/4481 A wavelength ratio produces results that are inconsistent withthe Stark broadening of the H lines. It is suggested that this ratio isnot useful as a luminosity criterion at any spectral type.Self-consistent sequences of narrow- and broadline standards areestablished. The results of the refined classification system arecompared with Stromgren photometry, showing a set of low-v sin i A-typestars with anomalously large delta(c1) indices for theirluminosity types. It is proposed that these stars are rapid rotatorsseen at fairly low inclination angles.

A finding list of early-type stars near the south galactic pole.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1971AJ.....76..338S&db_key=AST

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:玉夫座
右阿森松:23h45m52.73s
赤纬:-32°55'37.8"
视星:8.183
距离:325.733 天文距离
右阿森松适当运动:3.9
赤纬适当运动:2.8
B-T magnitude:8.405
V-T magnitude:8.202

目录:
适当名称   (Edit)
HD 1989HD 222996
TYCHO-2 2000TYC 7518-630-1
USNO-A2.0USNO-A2 0525-44354850
HIPHIP 117204

→ 要求更多目录从vizier