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An algorithm for the detection of transits of planets around eclipsing binaries in CoRoT

Published online by Cambridge University Press:  01 May 2008

Jose Manuel Almenara
Affiliation:
Instituto de Astrofísica de Canarias, 38205, La Laguna, Tenerife, Spain email: jmav@iac.es; hdeeg@iac.es; clh@iac.es; mam@iac.es
Hans J. Deeg
Affiliation:
Instituto de Astrofísica de Canarias, 38205, La Laguna, Tenerife, Spain email: jmav@iac.es; hdeeg@iac.es; clh@iac.es; mam@iac.es
Carlos Lázaro
Affiliation:
Instituto de Astrofísica de Canarias, 38205, La Laguna, Tenerife, Spain email: jmav@iac.es; hdeeg@iac.es; clh@iac.es; mam@iac.es Dept. de Astrofísica, Universidad de La Laguna, 38206, La Laguna, Tenerife, Spain
María Jesús Arévalo
Affiliation:
Instituto de Astrofísica de Canarias, 38205, La Laguna, Tenerife, Spain email: jmav@iac.es; hdeeg@iac.es; clh@iac.es; mam@iac.es Dept. de Astrofísica, Universidad de La Laguna, 38206, La Laguna, Tenerife, Spain
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Abstract

We present a matched filter algorithm to detect transits of planets that orbit both components of close eclipsing binaries in CoRoT targets. The formation of binary systems surrounded by disks is one of the most common outcomes of stellar formation; their detection would therefore constitute an important discovery. In an eclipsing binary system, the binary-planet alignment gives raised transit probabilities and the special transit shapes from circumbinary planets provide a unique identifier for their planetary nature; the problems of false alarms are largely avoided. CoRoT data have unprecedented time coverage and photometric precision that make them especially suitable for the search of transits of planets across eclipsing binaries. No reliable detections of circumbinary planets have been reported yet, and their discovery would constitute a new class of planets.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2009

References

Jenkins, J. M., Doyle, L. R., & Cullers, D. K. 1996, Icarus, 119, 244CrossRefGoogle Scholar
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