He abundances in disc galaxies
نویسندگان
چکیده
منابع مشابه
Key words: Quasars: absorption lines – Quasars: individual: HE 1122−1649, HE 0515−4414 Galaxies: abundances – Galaxies: evolution – Galaxies: ISM – Cosmology: observations
Detailed analysis of the spectral lines from two low redshift damped Lyman alpha absorbers (DLA) confirms that they are a heterogeneous population. Both systems have low metal abundances of approximately 0.05 to 0.1 solar. The abundance pattern of the DLA at z = 1.15 towards HE 0515-4414 shows dust depletion comparable to that found in our Galaxy, while the system at z = 0.68 towards HE 1122-16...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2019
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/201935886