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Bharti Arora, Jeewan Chandra Pandey, Arti Joshi & Michaël De Becker

Polarization study of massive binaries with the ARIES-1.04 m telescope

(Volume 88 - Année 2019 — Actes de colloques — 2nd Belgo-Indian Network for Astronomy & Astrophysics (BINA) workshop - October 2018 - Brussels, Belgium)
DOI: 10.25518/0037-9565.8992
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Mots-clés : étoiles, primitives, longueur d’onde optique, binaires massives, polarisation linéaire

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

To cite this 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 : http://popups.ulg.be/0037-9565/index.php?id=8992.

About: Bharti Arora

Aryabhatta Research Institute of Observational Sciences (ARIES), Nainital263 002, India,  bharti@aries.res.in

About: Jeewan Chandra Pandey

Aryabhatta Research Institute of Observational Sciences (ARIES), Nainital263 002, India

About: Arti Joshi

Aryabhatta Research Institute of Observational Sciences (ARIES), Nainital263 002, India

About: 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