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This is a repository copy of Using large spectroscopic surveys to test the double degenerate model for Type
| Content Provider | Semantic Scholar |
|---|---|
| Author | Breedt, Elmé Steeghs, Danny Marsh, Thomas R. Fusillo, Nicola Pietro Gentile Tremblay, P.-E. Green, Mahdi Pasquale, Salvatore De Hermes, James Joseph Gaensicke, Boris T. Parsons, Steven G. Bours, Madelon C. P. Longa-Pena, Pen'elope Rebassa-Mansergas, Alberto |
| Copyright Year | 2017 |
| Abstract | An observational constraint on the contribution of double degenerates to Type Ia supernovae requires multiple radial velocity measurements of ideally thousands of white dwarfs. This is because only a small fraction of the double degenerate population is massive enough, with orbital periods short enough, to be considered viable Type Ia progenitors. We show how the radial velocity information available from public surveys such as the Sloan Digital Sky Survey can be used to pre-select targets for variability, leading to a ten-fold reduction in observing time required compared to an unranked or random survey. We carry out Monte Carlo simulations to quantify the detection probability of various types of binaries in the survey and show that this method, even in the most pessimistic case, doubles the survey size of the largest survey to date (the SPY survey) in less than 15 per cent of the required observing time. Our initial follow-up observations corroborate the method, yielding 15 binaries so far (eight known and seven new), as well as orbital periods for four of the new binaries. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://wrap.warwick.ac.uk/86168/1/WRAP_px-230217-arxiv_submission.pdf |
| Alternate Webpage(s) | http://eprints.whiterose.ac.uk/113356/1/1702.05117v1.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
