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Time-resolved photometry and spectroscopy of the new deeply-eclipsing SW Sextantis star HS 0728+6738
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UNSPECIFIED (2004) Time-resolved photometry and spectroscopy of the new deeply-eclipsing SW Sextantis star HS 0728+6738. ASTRONOMY & ASTROPHYSICS, 424 (2). pp. 647-655. doi:10.1051/0004-6361:20040408 ISSN 0004-6361.
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Official URL: http://dx.doi.org/10.1051/0004-6361:20040408
Abstract
We present time-resolved optical spectroscopy and photometry, and far-ultraviolet spectroscopy of HS 0728+6738, a cataclysmic variable discovered in the Hamburg Quasar Survey. We show that the system is a new eclipsing member of the SW Sex class of CVs with an orbital period of 3.21 h. We derive an orbital inclination of similar to85 +/- 4degrees from the average eclipse profile, making HS 0728+6738 the highest inclination SW Sex star known. The optical and far-ultraviolet emission lines are not or only weakly occulted during the eclipse, indicating the presence of line-emission sites either far outside the Roche lobe of the primary or, more likely, above the orbital plane of the binary. The photometric light curves exhibit fast variability with a period of similar to7 min, which might be related to the spin of the white dwarf.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QB Astronomy | ||||
Journal or Publication Title: | ASTRONOMY & ASTROPHYSICS | ||||
Publisher: | E D P SCIENCES | ||||
ISSN: | 0004-6361 | ||||
Official Date: | September 2004 | ||||
Dates: |
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Volume: | 424 | ||||
Number: | 2 | ||||
Number of Pages: | 9 | ||||
Page Range: | pp. 647-655 | ||||
DOI: | 10.1051/0004-6361:20040408 | ||||
Publication Status: | Published |
Data sourced from Thomson Reuters' Web of Knowledge
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