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 29458


目录

图像

上传图像

DSS Images   Other Images


相关文章

Infrared spectroscopy of T Tauri stars
The hydrogen-sodium diagnostic method is applied to a sample of 134 TTauri stars of low luminosity, and the luminosity of Pa-beta, Br-gamma,and Br-alpha are measured. This method permits the physical conditionsin the inner regions of winds to be determined with useful accuracy. Theresults show that a restricted range of T(g), between 5000 and 7000 K,and of mass loss rate, between 10 to the -8th and 10 to the -7th solarmass/yr, is populated by several luminous T Tauri stars. It seems likelythat the ejection of cold and neutral atomic winds represents a commonphase of the premain sequence evolution of low-mass 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:英仙座
右阿森松:04h40m05.15s
赤纬:+39°47'18.4"
视星:7.205
距离:198.807 天文距离
右阿森松适当运动:31.5
赤纬适当运动:-24.9
B-T magnitude:9.223
V-T magnitude:7.372

目录:
适当名称   (Edit)
HD 1989HD 29458
TYCHO-2 2000TYC 2897-284-1
USNO-A2.0USNO-A2 1275-03567516
HIPHIP 21738

→ 要求更多目录从vizier