NAOC Open IR  > 光学天文研究部
Empirical study of departures from the excitation equilibrium of Fe I in metal-poor stars
Magain, P; Zhao, G
1996
Source PublicationASTRONOMY & ASTROPHYSICS
Volume305Issue:1Pages:245-254
AbstractA detailed analysis of neutral iron lines in a sample of 13 metal-poor dwarfs and subgiants is carried out on the basis of high resolution spectra obtained with the ESO Coude Echelle Spectrometer. The deduced iron abundance is found to depend on the excitation potential of the line used, higher excitation lines generally indicating higher abundances. This could be caused by departures from the local thermodynamic equilibrium (LTE) or by temperature inhomogeneities in the stellar atmospheres. The dependency of this effect on the stellar atmospheric parameters is investigated. From the comparison of iron lines with lines of other elements, it is concluded that the low excitation Fe I lines are much more affected than the high excitation lines. The consequences of these effects for the classical abundance analyses are examined. It is found that they may explain, at least in part, some previously reported discrepancies between the results of different authors.
KeywordStars Abundances Galaxy Population Ii Abundances
Indexed BySCI
Language英语
WOS IDWOS:A1996TM48800018
Citation statistics
Cited Times:16[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8104
Collection光学天文研究部
AffiliationCHINESE ACAD SCI, BEIJING ASTRON OBSERV, BEIJING 100080, PEOPLES R CHINA
Recommended Citation
GB/T 7714
Magain, P,Zhao, G. Empirical study of departures from the excitation equilibrium of Fe I in metal-poor stars[J]. ASTRONOMY & ASTROPHYSICS,1996,305(1):245-254.
APA Magain, P,&Zhao, G.(1996).Empirical study of departures from the excitation equilibrium of Fe I in metal-poor stars.ASTRONOMY & ASTROPHYSICS,305(1),245-254.
MLA Magain, P,et al."Empirical study of departures from the excitation equilibrium of Fe I in metal-poor stars".ASTRONOMY & ASTROPHYSICS 305.1(1996):245-254.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Magain, P]'s Articles
[Zhao, G]'s Articles
Baidu academic
Similar articles in Baidu academic
[Magain, P]'s Articles
[Zhao, G]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Magain, P]'s Articles
[Zhao, G]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.