Parallaxes of metal-poor main-sequence stars
نویسندگان
چکیده
منابع مشابه
O / Fe in metal - poor main sequence and subgiant stars ⋆
A study of the O/Fe ratio in metal-poor main sequence and subgiant stars is presented using the [O i] 6300Å line, the O i 7774Å triplet, and a selection of weak Fe ii lines observed on high-resolution spectra acquired with the VLT UVES spectrograph. The [O i] line is detected in the spectra of 18 stars with −0.5 < [Fe/H] − 2.4, and the triplet is observed for 15 stars with [Fe/H] ranging from −...
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ژورنال
عنوان ژورنال: Proceedings of the International Astronomical Union
سال: 2012
ISSN: 1743-9213,1743-9221
DOI: 10.1017/s1743921312021175