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What does C II lambda 2325 A emission tell us about chromospheres of red supergiants? - A critical test using Zeta Aurigae-type K supergiantsThe limitations of the Carpenter et al. (1985) C II intercombination multiplet method of determining the density and geometric extent of red giant chromospheres are presently tested through observation of the C II 2325 A emission of two K-type supergiants whose empirical model chromospheres have been derived by high-resolution IUE observations at eclipse phases. While the observed C II emission fluxes are well reproduced, much of this emission originates in the high-density lower chromosphere.
Document ID
19890026483
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Schroeder, K.-P.
(Hamburger Sternwarte G.m.b.H. Germany)
Reimers, D.
(Hamburger Sternwarte Hamburg, Federal Republic of Germany, United States)
Carpenter, K. G.
(NASA Goddard Space Flight Center Greenbelt, MD; Joint Institute for Laboratory Astrophysics, Boulder, CO, United States)
Brown, A.
(Joint Institute for Laboratory Astrophysics Boulder, CO, United States)
Date Acquired
August 14, 2013
Publication Date
August 1, 1988
Publication Information
Publication: Astronomy and Astrophysics
Volume: 202
Issue: 1-2
ISSN: 0004-6361
Subject Category
Astrophysics
Accession Number
89A13854
Funding Number(s)
CONTRACT_GRANT: NAG5-82
CONTRACT_GRANT: DFG-RE-353/14-1
Distribution Limits
Public
Copyright
Other

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