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 1468


目录

图像

上传图像

DSS Images   Other Images


相关文章

TU Cassiopeiae periods and amplitudes
Light-curve observations of the double-mode Cepheid TU Cas obtained by10 different groups of observers on several photometric systems over atime span of 67 years have been carefully studied to determine thefundamental and first-overtone periods and their amplitudes on the Vmagnitude scale. The presence of a second-overtone radial pulsation isdiscussed, and it is concluded that a previous detection of this modewas spurious because of the lack of a proper zero-point correction fortwo groups of observations. It is possible that the amplitude of one ofthe two modes varies during the entire observing period, with thefundamental-mode amplitude constant at 0.69 plus or minus 0.03 and theovertone amplitude decreasing from 0.4 to 0.25 mag. If this Cepheiddisplays the two pulsation modes because it is mode switching, thisswitching time scale may be less than a few hundred years.

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:仙后座
右阿森松:00h18m58.60s
赤纬:+50°41'38.3"
视星:7.832
距离:121.212 天文距离
右阿森松适当运动:-12.6
赤纬适当运动:-19
B-T magnitude:8.067
V-T magnitude:7.852

目录:
适当名称   (Edit)
HD 1989HD 1468
TYCHO-2 2000TYC 3259-57-1
USNO-A2.0USNO-A2 1350-00342724
HIPHIP 1524

→ 要求更多目录从vizier