NEW POLARIMETRIC OBSERVATIONS OF V367 CYG

Citation
Av. Berdyugin et Ae. Tarasov, NEW POLARIMETRIC OBSERVATIONS OF V367 CYG, Astronomy reports, 41(2), 1997, pp. 199-206
Citations number
24
Categorie Soggetti
Astronomy & Astrophysics
Journal title
ISSN journal
10637729
Volume
41
Issue
2
Year of publication
1997
Pages
199 - 206
Database
ISI
SICI code
1063-7729(1997)41:2<199:NPOOVC>2.0.ZU;2-5
Abstract
New UBVRI polarimetric observations of the active interacting binary V 367 Cyg are presented. Contrary to the previously published results, t hese observations do not confirm the presence of a substantial circula r polarization in this variable. It is shown that within the limits of observational error, the circular polarization in V367 Cyg is close t o zero, and that the observed linear polarization is dominated by the interstellar component. The variable intrinsic polarization component most likely results from the scattering of light by a stream of gas th at flows from the primary star through the inner Lagrangian point towa rd the secondary. An analysis of the polarization variability has yiel ded the orbital inclination i = 82.1 degrees +/- 2.5 degrees and the s patial orientation of the orbit Omega = 51.5 degrees + 6.1 degrees. It is also shown that there is no source of intrinsic constant linear po larization in V367 Cyg, suggesting in turn that this binary has no ext ensive disk-shaped envelope, while not ruling out the presence of a sp herical envelope.