The Library
Orbital periods of cataclysmic variables identified by the SDSS. VII, Four new eclipsing systems
Tools
Tools
Tools
Southworth, J. (John), Copperwheat, C. M., Gänsicke, B. T. (Boris T.) and Pyrzas, S. (2010) Orbital periods of cataclysmic variables identified by the SDSS. VII, Four new eclipsing systems. Astronomy & Astrophysics, Vol.510 (No.A100). doi:10.1051/0004-6361/200913576
![[img]](http://wrap.warwick.ac.uk/style/images/fileicons/application_pdf.png) |
PDF
WRAP_Copperwheat_12_orbital_periods_aa13576-09[1].pdf - Requires a PDF viewer. Download (574Kb) |
Official URL: http://dx.doi.org/10.1051/0004-6361/200913576
Abstract
We present photometry of nine cataclysmic variable stars identified by the Sloan Digital Sky Survey, aimed at measuring the orbital periods of these systems. Four of these objects show deep eclipses, from which we measure their orbital periods. The light curves of three of the eclipsing systems are also analysed using the lcurve code, and their mass ratios and orbital inclinations determined.
SDSS J075059.97+141150.1 has an orbital period of 134.1564 ± 0.0008 min, making it a useful object with which to investigate the evolutionary processes of cataclysmic variables. SDSS J092444.48+080150.9 has a period of 131.2432 ± 0.0014 min and is probably magnetic. The white dwarf ingress and egress phases are very deep and short, and there is no clear evidence that this object has an
accretion disc. SDSS J115207.00+404947.8 and SDSS J152419.33+220920.1 are nearly identical twins, with periods of 97.5 ± 0.4 and 93.6 ± 0.5 min and mass ratios of 0.14 ± 0.03 and 0.17 ± 0.03, respectively. Their eclipses have well-defined white dwarf and bright spot ingress and egress features, making them excellent candidates for detailed study. All four of the orbital periods presented
here are shorter than the 2–3 h period gap observed in the known population of cataclysmic variables.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QB Astronomy | ||||
| Divisions: | Faculty of Science > Physics | ||||
| Library of Congress Subject Headings (LCSH): | Cataclysmic variable stars, Stars -- Orbits, Eclipsing binaries | ||||
| Journal or Publication Title: | Astronomy & Astrophysics | ||||
| Publisher: | EDP Sciences | ||||
| ISSN: | 0004-6361 | ||||
| Official Date: | February 2010 | ||||
| Dates: |
|
||||
| Volume: | Vol.510 | ||||
| Number: | No.A100 | ||||
| Number of Pages: | 9 | ||||
| DOI: | 10.1051/0004-6361/200913576 | ||||
| Status: | Peer Reviewed | ||||
| Access rights to Published version: | Open Access | ||||
| Funder: | Science and Technology Facilities Council (Great Britain) (STFC) | ||||
| Grant number: | ST/F002599/1 (STFC) |
Data sourced from Thomson Reuters' Web of Knowledge
Request changes or add full text files to a record
Repository staff actions (login required)
 |
View Item |
Downloads
Downloads per month over past year
