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A search for technetium (Tc II) in barium starsThe authors searched without success for the lines of Tc II at 2647.02, 2610.00 and 2543.24 A in IUE spectra of the barium stars HR 5058, Omicron Vir, and Zeta Cap. The lack of Tc II implies that the observed s-process enhancements were produced more than half a million years ago and supports the suggestion that the spectral peculiarities of barium stars are probably related to the binary nature of the stars.
Document ID
19870056875
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Little-Marenin, Irene R.
(USAF, Geophysics Laboratory, Hanscom AFB; Whitin Observatory, Wellesley MA, United States)
Little, Stephen J.
(Bentley College Waltham, MA, United States)
Date Acquired
August 13, 2013
Publication Date
June 1, 1987
Publication Information
Publication: Astronomical Journal
Volume: 93
ISSN: 0004-6256
Subject Category
Astrophysics
Accession Number
87A44149
Funding Number(s)
CONTRACT_GRANT: NAG5-438
CONTRACT_GRANT: NAS5-26409
Distribution Limits
Public
Copyright
Other

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