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Phase-resolved Spectroscopy and Photometry of the Eclipsing Polar UZ Fornacis

Published online by Cambridge University Press:  29 August 2019

Z. N. Khangale ,
S. B. Potter  and
P. A. Woudt
Z. N. Khangale
Affiliation:
South African Astronomical Observatory, Cape Town, South Africa email: [email protected] Department of Astronomy, University of Cape Town, Cape Town, South Africa
S. B. Potter
Affiliation:
South African Astronomical Observatory, Cape Town, South Africa email: [email protected]
P. A. Woudt
Affiliation:
Department of Astronomy, University of Cape Town, Cape Town, South Africa
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Abstract

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The blue continuum of the eclipsing polar UZ For is dominated by single- or double-peaked emission from He ii, He i and the Balmer lines. The red spectrum shows weak emission from the Na i doublet at λ 8183 and 8194 Å and strong emission from the Ca ii lines at λ 8498 and 8542 Å. Doppler tomography of the strongest emission features reveals the presence of emission from the irradiated face of the secondary star, the threading region, and the ballistic and magnetically confined accretion stream. We have obtained 28 new eclipse times of UZ For during 2011–2016 as part of our eclipse timing follow-up programme to test the two-planet model proposed to explain variations in the eclipse times of UZ For.

Keywords

Accretion, accretion diskstechniques: photometric, spectroscopicstars: individual: UZ Forcataclysmic variables-planetary systems
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S339: Southern Horizons in Time-Domain Astronomy , November 2017 , pp. 314 - 317
Copyright
© International Astronomical Union 2019 

Footnotes

†

For the full poster, see http://dx.doi.org/10.1017/S1743921318002867

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