Spectropolarimetric Observations of the Recurrent Nova RS Oph
Y.M. Nikolov, R.K. Zamanov and K.A. Stoyanov
Institute of Astronomy and National Astronomical Observatory, Bulgarian Academy of Sciences, 72 Tsarigradsko Chaussee Blvd., 1784, Sofia, Bulgaria
e-mail: ynikolov@nao-rozhen.org, kstoyanov@astro.bas.bg
Received: August 27, 2018
ABSTRACT
We report spectropolarimetric observations of the recurrent nova
RS Oph obtained during four nights between 2017 July and 2018
July. In the wavelength range from 5000 Å to
8000 Å, we find the maximum degree of linear
polarization PL(obs)=2.9%±0.09 at
λ≈5600 Å and the position angle
θ=47o.2±0o.9. We do not detect any
variability of the degree of polarization and the position angle. At the
time of our observations, there is no intrinsic polarization in
RS Oph and the observed values represent the interstellar
polarization.
Key words:
binaries: symbiotic - novae, cataclysmic variables - Techniques: polarimetric -
Stars: individual: RS Oph
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