Reference : A comprehensive variability study of the enigmatic WN8 stars - Final results
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/13064
A comprehensive variability study of the enigmatic WN8 stars - Final results
English
Marchenko, S. V. [Montreal, Univ.]
Moffat, A. F. J. [Montreal, Univ.]
Eversberg, T. [Montreal, Univ.]
Morel, Thierry [Département de Physique, Université de Montréal, C.P. 6128, Succ. Centre-Ville, Montréal, Québec, H3C 3J7, Canada > > > >]
Hill, G. M. [Dominion Astrophysical Observatory]
Tovmassian, G. H. [Inst. de Astronomia]
Seggewiss, W. [Bonn, Universitaets-Sternwarte]
1-Mar-1998
Monthly Notices of the Royal Astronomical Society
Blackwell Publishing
294
642
Yes (verified by ORBi)
International
0035-8711
Oxford
United Kingdom
[en] SKY SURVEYS (ASTRONOMY) ; VARIABLE STARS ; STELLAR CORES ; STELLAR WINDS ; STELLAR SPECTROPHOTOMETRY ; STATISTICAL ANALYSIS ; STELLAR ACTIVITY ; DATA PROCESSING ; TABLES (DATA)
[en] As a conclusion of our all-sky variability survey of the 'enigmatic' variable WN8 stars, we have carried out coordinated multisite photometric and spectroscopic observations of WN8 stars in 1989 and 1994-1995. We confirm the leading role of the stellar core in restructuring the whole wind. This emerges as a statistical trend: the higher the level of the continuum (i.e., core) light variations, the higher the variability of the P Cygni edges of the optical emission lines. However, the form of the correlation between the light and profile variations is generally different for each individual star. The high level of activity of WN8 stars may be supported/induced by pulsational instability.
http://hdl.handle.net/2268/13064
10.1046/j.1365-8711.1998.01174.x
http://adsabs.harvard.edu/abs/1998MNRAS.294..642M

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