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Three eclipsing white dwarf plus main sequence binaries from SDSS
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Pyrzas, S., Gänsicke, B. T. (Boris T.), Marsh, T. R., Aungwerojwit, A. (Amornrat), Rebassa-Mansergas, A., Southworth, J. (John), Rodriguez-Gil, P., Schreiber, Matthias R. and Koester, Detlev, 1941-. (2009) Three eclipsing white dwarf plus main sequence binaries from SDSS. Journal of Physics: Conference Series, Vol.172 (No.1). 012028. ISSN 1742-6596
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Official URL: http://dx.doi.org/10.1088/1742-6596/172/1/012028
Abstract
We identify SDSS 0110+1326, SDSS 0303+0054 and SDSS 1435+3733 as three eclipsing white dwarf plus main sequence binaries from the Sloan Digital Sky Survey, and report on their follow-up observations. Orbital periods for the three systems are established through multi-season photometry. Time-resolved spectroscopic observations lead to the determination of the radial velocities of the secondary stars. A decomposition technique of the SDSS spectra is used to estimate the surface gravities and effective temperatures of the white dwarfs, as well as the spectral types of the secondaries. By combining the constraints from the spectral decomposition, the radial velocity data and the modeling of the systems' light curves, we determine the physical parameters of the stellar components. Two of the white dwarfs are of low mass (M-WD similar to 0.4 M-circle dot), while the third white dwarf is unusually massive (M-WD similar to 0.8-0.9 M-circle dot) for a post-common envelope system.
| Item Type: | Journal Article |
|---|---|
| Subjects: | Q Science > QB Astronomy |
| Divisions: | Faculty of Science > Physics |
| Library of Congress Subject Headings (LCSH): | White dwarf stars, Eclipsing binaries, Sloan Digital Sky Survey |
| Journal or Publication Title: | Journal of Physics: Conference Series |
| Publisher: | Institute of Physics Publishing Ltd. |
| ISSN: | 1742-6596 |
| Date: | July 2009 |
| Volume: | Vol.172 |
| Number: | No.1 |
| Number of Pages: | 4 |
| Page Range: | 012028 |
| Identification Number: | 10.1088/1742-6596/172/1/012028 |
| Status: | Peer Reviewed |
| Publication Status: | Published |
| Access rights to Published version: | Restricted or Subscription Access |
| Version or Related Resource: | Paper presented at: 16th European White Dwarfs Workshop, Barcelona, Spain, 30 Jun - 4 Jul 2008 |
| Conference Paper Type: | Paper |
| Type of Event: | Workshop |
| References: | Adelman-McCarthy J K et al. 2006 ApJS 162 38 Bergeron P et al. 1995 PASP 107 1047 Koester D et al. 2005 A&A 439 317 Pyrzas S et al. 2008 MNRAS submitted Rebassa-Mansergas A et al. 2007 MNRAS 382 1377 Silvestri N M et al. 2006 AJ 131 1674 Steinfadt J D R et al. 2008 ApJ Lett. 677 L113 Stoughton C et al. 2002 AJ 123 485 |
| URI: | http://wrap.warwick.ac.uk/id/eprint/16570 |
Data sourced from Thomson Reuters' Web of Knowledge
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