Polarization study of massive binaries with the ARIES-1.04 m telescope
Bharti Arora,
Aryabhatta Research Institute of Observational Sciences (ARIES), Nainital263 002, India,
bharti@aries.res.in
Jeewan Chandra Pandey,
Aryabhatta Research Institute of Observational Sciences (ARIES), Nainital263 002, India
Arti Joshi,
Aryabhatta Research Institute of Observational Sciences (ARIES), Nainital263 002, India
Michaël De Becker,
Space Sciences, Technologies and Astrophysics Research (STAR) Institute, University of Liège, Quartier Agora, 19c, Allée du 6 Août, B5c, B-4000 Sart Tilman, Belgium
Abstract
We present preliminary results obtained from optical (B, V, R, and I) linear polarimetric observations of the O+O massive binary DH Cep. The observations were made on six nights in 2017 with the Aries IMaging POLarimeter (AIMPOL) mounted at the back of the 1.04-m Sampurnanand Telescope of ARIES. The average intrinsic linear polarization in each of the B, V, R, and I photometric bands is found to be less than 1%. The degree of polarization as well as the polarization angle appear to be orbital phase dependent. The significant polarization variability noticed towards shorter wavelengths (i.e. B and V bands) is indicative of the asymmetric circumstellar envelope.
Keywords : stars, early-type, optical wavelength, massive binaries, individual, DH Cep, technique, linear polarization
Pour citer cet article
Bharti Arora, Jeewan Chandra Pandey, Arti Joshi & Michaël De Becker, «Polarization study of massive binaries with the ARIES-1.04 m telescope», Bulletin de la Société Royale des Sciences de Liège [En ligne], Volume 88 - Année 2019, Actes de colloques, 2nd Belgo-Indian Network for Astronomy & Astrophysics (BINA) workshop - October 2018 - Brussels, Belgium, 287 - 290 URL : https://popups.uliege.be/0037-9565/index.php?id=8992.