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On the mass of nova DQ Hercules (1934)Time-resolved high-resolution CCD spectroscopy covering two 4.6-hr orbits of DQ Her are presented. Analysis of the Na I 8183,8195 A absorption doublet yields estimates of the secondary star's projected orbital velocity and rotational broadening. The estimate of the projected orbital velocity is refined using models of the effects of irradiation on the secondary star, producing a final value of 227 +/- 10 km/s. The stellar masses are estimated at M1 = 0.60 +/- 0.07 and M2 = 0.40 +/- 0.05 solar mass.
Document ID
19930057237
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
doi:10.1086/172752
Authors
Horne, Keith (Space Telescope Science Inst. Baltimore, MD, United States)
Welsh, William F. (Space Telescope Science Inst., Baltimore, MD; Ohio State Univ. Columbus, United States)
Wade, Richard A. (Pennsylvania State Univ. University Park; Steward Observatory, Tucson, AZ, United States)
Date Acquired
August 16, 2013
Publication Date
June 10, 1993
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 410
Issue: 1
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
93A41234
Funding Number(s)
CONTRACT_GRANT: NAGW-2678
CONTRACT_GRANT: NSF AST-91-45162
CONTRACT_GRANT: NSF AST-88-18069
CONTRACT_GRANT: NSF AST-85-14778
Distribution Limits
Public
Copyright
Other

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