The long-period binary central stars of the planetary nebulae NGC 1514 and LoTr 5
نویسندگان
چکیده
منابع مشابه
Barium - rich G stars in the nuclei of the planetary nebulae Abell 35 and LoTr 5 ?
A spectroscopic analysis of the G-star located at the centre of Abell 35 leads to a surface gravity log g= 3.7±0.5 and an effective temperature T eff = 5300 ± 200 K, which are typical of a G8IV spectral type. We estimate a projected rota-tional velocity of 55 ± 10 km s −1 and deduce a radius 1.5 ≤ R G ≤ 3.5R in agreement with the subgiant luminosity class: the star is rapidly rotating, near the...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2017
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/201730700