Letter to the editor (Scientific journals)
The Al/Mg abundance ratio in halo stars
Arpigny, Claude; Magain, Pierre
1983In Astronomy and Astrophysics, 127, p. 7-L9
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Keywords :
ABUNDANCE; ALUMINUM; MAGNESIUM; METALLICITY; NUCLEAR FUSION; SUBDWARF STARS; LINE SPECTRA; STELLAR SPECTRA
Abstract :
[en] The Al to Mg abundance ratio is redetermined in two extreme metal-poor stars, HD 19445 and HD 140283, on the basis of accurate spectral material. It is found that: (1) one of the two lines used for the Al abundance determination is blended by CH lines; (2) no anomalous difference appears between the hotter and the cooler star, both showing an Al overdeficiency; (3) the observations are in fair agreement with predictions from the theory of explosive carbon burning.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Arpigny, Claude ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)
Magain, Pierre  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image
Language :
English
Title :
The Al/Mg abundance ratio in halo stars
Publication date :
1983
Journal title :
Astronomy and Astrophysics
ISSN :
0004-6361
eISSN :
1432-0746
Publisher :
EDP Sciences, Les Ulis, France
Volume :
127
Pages :
L7-L9
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 17 March 2010

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