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 185737


目录

图像

上传图像

DSS Images   Other Images


相关文章

Classification of Population II Stars in the Vilnius Photometric System. I. Methods
The methods used for classification of Population II stars in theVilnius photometric system are described. An extensive set of standardswith known astrophysical parameters compiled from the literature sourcesis given. These standard stars are classified in the Vilnius photometricsystem using the methods described. The accuracy of classification isevaluated by a comparison of the astrophysical parameters derived fromthe Vilnius photometric system with those estimated from spectroscopicstudies as well as from photometric data in other systems. For dwarfsand subdwarfs, we find a satisfactory agreement between our reddeningsand those estimated in the uvbyscriptstyle beta system. The standarddeviation of [Fe/H] deter mined in the Vilnius system is about 0.2 dex.The absolute magnitude for dwarfs and subdwarfs is estimated with anaccuracy of scriptstyle <=0.5 mag.

Three-dimensional calssification of F-M type halo stars in the Vilnius photometric system
Not Available

Observations of carbon monoxide in metal-deficient stars
A sample of cool metal-deficient giant stars has been observed to obtainan estimate of the CO abundance independent of metallicity. The strengthof the 2.3-micron first-overtone carbon monoxide band was measuredphotometrically using intermediate-bandwidth filters. For late-typegiants with Fe/H from about zero to -1.5 the CO index decreases withdecreasing metallicity from the mean relation for Population I giants.Stars more metal-poor than Fe/H = -1.5 show uniformly weak orundetectable CO. Among giant stars of intermediate metallicity, thescatter in the observed CO strength as a function of Fe/H may be largerthan can be attributed to observational error. A range in the abundanceratio CNO/Fe in metal-poor field giants is suggested.

Light and radial velocity observations of classical Cepheids
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1976ApJS...32..399E&db_key=AST

A Search for Metal-Deficient Stars
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1970ApJS...22..117B&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:天箭座
右阿森松:19h39m55.71s
赤纬:+19°23'58.9"
视星:8.082
距离:239.808 天文距离
右阿森松适当运动:6.2
赤纬适当运动:-24.7
B-T magnitude:9.153
V-T magnitude:8.171

目录:
适当名称   (Edit)
HD 1989HD 185737
TYCHO-2 2000TYC 1610-356-1
USNO-A2.0USNO-A2 1050-14362252
HIPHIP 96740

→ 要求更多目录从vizier