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

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

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...

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Veröffentlicht in:Proceedings of the International Astronomical Union 2017-11, Vol.14 (S339), p.314-317
Hauptverfasser: Khangale, Z. N., Potter, S. B., Woudt, P. A.
Format: Artikel
Sprache:eng
Schlagworte:
Astronomy
Contributed Papers
Deposition
Eclipses
Model testing
Photometry
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Beschreibung
Zusammenfassung: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.
ISSN:1743-9213
1743-9221
DOI:10.1017/S1743921318002867