Article (Scientific journals)
Analysis of the light variations of the Wolf-Rayet star WR16
Gosset, Eric; Vreux, Jean-Marie; Manfroid, Jean et al.
1990In Astronomy and Astrophysics. Supplement Series, 84, p. 377-396
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Keywords :
STELLAR SPECTROPHOTOMETRY; VARIABLE STARS; WOLF-RAYET STARS; AUTOCORRELATION; COMPUTATIONAL ASTROPHYSICS; POLARIMETRY; POWER SPECTRA; STELLAR MAGNITUDE
Abstract :
[en] This paper presents new data sets of Stromgren differential photometry observations of the Wolf-Rayet star WR16, collected at the ESO (La Silla, Chile). Results of detailed data analyses support previous findings concerning the variability of WR16, with dominating power at frequencies below 1.5/d. The variations were found to be positively correlated on time lags up to about two days, a characteristic delay larger than the time of replacement of a typical WR star wind. A simple stochastic model is developed for the low frequency variability of the star, which is able to explain the available observations.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Gosset, Eric ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Groupe d'astrophysique des hautes énergies (GAPHE)
Vreux, Jean-Marie ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO)
Manfroid, Jean  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)
Remy, M.
Sterken, C.;  Brussel, Vrije Universiteit, Brussels, Belgium
Language :
English
Title :
Analysis of the light variations of the Wolf-Rayet star WR16
Publication date :
01 August 1990
Journal title :
Astronomy and Astrophysics. Supplement Series
ISSN :
0365-0138
eISSN :
1286-4846
Publisher :
EDP Sciences, Les Ulis, France
Volume :
84
Pages :
377-396
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 13 January 2012

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