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An atlas of Copernicus ultraviolet spectra of Wolf-Rayet starsAn atlas of Copernicus UV scans is presented, and line identifications are tabulated, for the Wolf-Rayet stars Gamma-2 Vel (WC 8 + O7), HD 50896 (= EZ CMa; WN 5), and HD 92740 (WN 7). The atlas covers the wavelength ranges from 946.8 to 3182 A for Gamma-2 Vel, from 1012 to 1294 A for HD 50896, and from 1051 to 1243 A for HD 92740. The wavelengths include corrections for components of satellite velocity, earth velocity, and stellar heliocentric velocity; each spectral feature is classified as interstellar, photospheric, emission, UV-displaced P Cygni line absorption, or P Cygni line emission. UV-edge velocities of the P Cygni profiles are estimated, P Cygni profile types are discussed, and the results are compared with Copernicus scans of OB stars exhibiting UV P Cygni profiles. It is noted that: (1) the line-strength ratio of molecular hydrogen to atomic species appears to be substantially greater in the scans of the WN stars than in the Gamma-2 Vel scans; (2) some of the P Cygni profiles in Gamma-2 Vel differ significantly from the corresponding profiles in OB stars; and (3) there may be a slight inverse correlation between ejection velocities and excitation potentials in Gamma-2 Vel.
Document ID
19780044374
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Johnson, H. M.
Date Acquired
August 9, 2013
Publication Date
February 1, 1978
Publication Information
Publication: Astrophysical Journal Supplement Series
Volume: 36
Subject Category
Astronomy
Accession Number
78A28283
Funding Number(s)
CONTRACT_GRANT: NAS5-23340
CONTRACT_GRANT: NAS5-23486
Distribution Limits
Public
Copyright
Other

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