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The C and N abundances in disk stars
Shi, JR; Zhao, G; Chen, YQ
AbstractAbundance analysis of carbon and nitrogen has been performed for a sample of 90 F and G type main-sequence disk stars with a metallicity range of 1:0 < [Fe/H] < +0.2 using the C I and N I lines. We confirm a moderate carbon excess in the most metal-poor disk dwarfs found in previous investigations. Our results suggest that carbon is enriched by superwinds of metal-rich massive stars at the beginning of the disk evolution, while a significant amount of carbon is contributed by low-mass stars in the late stage. The observed behavior of [N/Fe] is about solar in the disk stars, irrespective of the metallicity. This result suggests that nitrogen is produced mostly by intermediate-mass stars.
KeywordStars : Abundances Stars : Late-type Galaxy : Evolution Galaxy : Solar Neighbourhood
Indexed BySCI
WOS IDWOS:000173458400033
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Cited Times:29[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
2.Peking Univ, Chinese Acad Sci, Joint Beijing Astrophys Ctr, Beijing 100871, Peoples R China
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GB/T 7714
Shi, JR,Zhao, G,Chen, YQ. The C and N abundances in disk stars[J]. ASTRONOMY & ASTROPHYSICS,2002,381(3):982-992.
APA Shi, JR,Zhao, G,&Chen, YQ.(2002).The C and N abundances in disk stars.ASTRONOMY & ASTROPHYSICS,381(3),982-992.
MLA Shi, JR,et al."The C and N abundances in disk stars".ASTRONOMY & ASTROPHYSICS 381.3(2002):982-992.
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