Document Type
Article
Publication Date
3-1-2000
Publication Title
Monthly Notices of the Royal Astronomical Society
Department
Department of Physics and Astronomy
Abstract
We report spectroscopic orbital periods of 0.147 d (= 3.53 h) for V533 Her, 0.207 d (= 4.97 h) for V446 Her and 1.478 d for X Ser. V533 Her (Nova Herculis 1963) shows absorption features in its He i and Balmer lines which appear only in a limited range of orbital phase, suggesting that it is a low-inclination SW Sextantis star. V446 Her is unusual in that it has started normal dwarf nova eruptions after a nova outburst, but we find nothing else unusual about it — in particular, a distance estimate based on its dwarf nova outbursts agrees nicely with another based on the rate of decline of its nova eruption, both giving d ∼ 1 kpc. In X Ser, unlike in other old novae with long periods, no spectral features of the secondary star are visible. This and its outburst magnitude both suggest that it is quite distant and luminous, and at least 1 kpc from the Galactic plane.
DOI
10.1046/j.1365-8711.2000.03230.x
Dartmouth Digital Commons Citation
Thorstensen, J. R. and Taylor, C. J., "Spectroscopy and Orbital Periods of the Old Novae V533 Herculis, V446 Herculis and X Serpentis" (2000). Dartmouth Scholarship. 1873.
https://digitalcommons.dartmouth.edu/facoa/1873
