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Erratum: The 2.27 day period of WR-134 (HD 191765)The original temporal analysis of a 12 night spectral timeseries of Wolf-Rayet (WR)-134 has been found to be flawed and a re-analysis shows that the line profile variations are indeed periodic. When combined with a 4 night timeseries taken 45 days earlier, a period near 2.27 d is found in periodograms of the He II lambda 5412 line centroid, rms line width, and line skew variations. When the emission line residuals are ordered as a function of phase, a sinuous feature appears to 'snake' about the line center with an amplitude of +/-500 km/s. This is approximately equal to 20 larger than the line centroid amplitude; the calculation of which is heavily weighted by static portions of the line profile. In addition to the 'snake,' emission residuals appear that move away from line center on unbound trajectories and are thought to result from the interaction of a periodic driver with the unstable flow of the radiation driven wind.
Document ID
19950047013
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Mccandliss, Stephan R.
(Johns Hopkins Univ. Baltimore, MD, US, United States)
Bohannan, Bruce
(Kitt Peak National Observatory, Tucson, AZ US, United States)
Robert, Carmelle
(Space Telescope Science Inst. Baltimore, MD, US, United States)
Moffat, Anthony F. J.
(Univ. de Montreal Montreal, Quebec, Canada)
Date Acquired
August 16, 2013
Publication Date
November 1, 1994
Publication Information
Publication: Astrophysics and Space Science
Volume: 221
Issue: 2-Jan
ISSN: 0004-640X
Subject Category
Astrophysics
Accession Number
95A78612
Funding Number(s)
CONTRACT_GRANT: NAG5-619
Distribution Limits
Public
Copyright
Other

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