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Sodium in weak G-band giantsSodium abundances have been determined for eight weak G-band giants whose atmospheres are greatly enriched with products of the CN-cycling H-burning reactions. Systematic errors are minimized by comparing the weak G-band giants to a sample of similar but normal giants. If, further, Ca is selected as a reference element, model atmosphere-related errors should largely be removed. For the weak-G-band stars (Na/Ca) = 0.16 +/- 0.01, which is just possibly greater than the result (Na/Ca) = 0.10 /- 0.03 from the normal giants. This result demonstrates that the atmospheres of the weak G-band giants are not seriously contaminated with products of ON cycling.
Document ID
19950038836
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Drake, Jeremy J.
(Univ. of California, Berkeley, CA United States)
Lambert, David L.
(Univ. of Texas, Austin, TX United States)
Date Acquired
August 16, 2013
Publication Date
November 10, 1994
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 435
Issue: 2
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
95A70435
Funding Number(s)
CONTRACT_GRANT: NSF AST-91-15090
CONTRACT_GRANT: NAS5-30180
Distribution Limits
Public
Copyright
Other

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