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Discovery of ZZ Cetis in detached white dwarf plus main-sequence binaries
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Pyrzas, S., Gänsicke, B. T. (Boris T.), Hermes, J. J., Copperwheat, Chris M., Rebassa-Mansergas, A., Dhillon, V. S., Littlefair, S. P., Marsh, T. R., Parsons, S. G., Savoury, C. D. J., Schreiber, M. R., Barros, S. C. C., Bento, J., Breedt, E. and Kerry, P. (2014) Discovery of ZZ Cetis in detached white dwarf plus main-sequence binaries. Monthly Notices of the Royal Astronomical Society , Volume 447 (Number 1). pp. 691-697. doi:10.1093/mnras/stu2412 ISSN 0035-8711.
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Official URL: http://dx.doi.org/10.1093/mnras/stu2412
Abstract
We present the first results of a dedicated search for pulsating white dwarfs (WDs) in detached white dwarf plus main-sequence binaries. Candidate systems were selected from a catalogue of WD+MS binaries, based on the surface gravities and effective temperatures of the WDs. We observed a total of 26 systems using ULTRACAM mounted on ESO’s 3.5 m New Technology Telescope (NTT) at La Silla. Our photometric observations reveal pulsations in seven WDs of our sample, including the first pulsating white dwarf with a main-sequence companion in a post common envelope binary, SDSS J1136+0409. Asteroseismology of these new pulsating systems will provide crucial insight into how binary interactions, particularly the common envelope phase, affect the internal structure and evolution of WDs. In addition, our observations have revealed the partially eclipsing nature of one of our targets, SDSS J1223-0056.
| Item Type: | Journal Article | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||
| Journal or Publication Title: | Monthly Notices of the Royal Astronomical Society | ||||||||
| Publisher: | Oxford University Press | ||||||||
| ISSN: | 0035-8711 | ||||||||
| Official Date: | February 2014 | ||||||||
| Dates: |
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| Volume: | Volume 447 | ||||||||
| Number: | Number 1 | ||||||||
| Page Range: | pp. 691-697 | ||||||||
| DOI: | 10.1093/mnras/stu2412 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Restricted or Subscription Access |
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