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Einstein observations of three classical CepheidsWe have looked for X-ray emission from the classical Cepheids delta Cep, beta Dor, and zeta Gem during phases when the latter two stars show emission in low excitation chromospheric lines. No X-ray flux was detected except possibly from zeta Gem at phase 0.26. Derived upper limits are in line with emission flux or upper limits obtained for other F and G supergiants.
Document ID
19830044496
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
doi:10.1086/160767
Authors
Bohm-Vitense, E. (Washington, University Seattle, WA, United States)
Parsons, S. B. (NASA Goddard Space Flight Center Laboratory for Astronomy and Solar Physics, Greenbelt, MD; McDonald Observatory, Austin, TX, United States)
Date Acquired
August 11, 2013
Publication Date
March 1, 1983
Publication Information
Publication: Astrophysical Journal
Subject Category
Astronomy
Accession Number
83A25714
Funding Number(s)
CONTRACT_GRANT: NAG8-404
Distribution Limits
Public
Copyright
Other

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