| Issue |
A&A
Volume 464, Number 3, March IV 2007
|
|
|---|---|---|
| Page(s) | 1133 - 1138 | |
| Section | Planets and planetary systems | |
| DOI | https://doi.org/10.1051/0004-6361:20066111 | |
| Published online | 11 January 2007 | |
Detecting companions to extrasolar planets using mutual events
Observatoire de Paris-Meudon, 92195 Meudon Cedex, France e-mail: juan.cabrera@obspm.fr
Received:
26
July
2006
Accepted:
22
December
2006
Aims.We investigate a new approach to the detection of companions to extrasolar planets beyond the transit method. We discuss the possibility of the existence of “binary planets”.
Methods.We develop a method based on the imaging of a planet-companion as an unresolved system (but resolved from its parent star). It makes use of planet-companion “mutual phenomena”, namely mutual transits and mutual shadows.
Results.We show that companions can be detected and their radius measured down to lunar sizes.
Key words: stars: planetary systems / occultations
© ESO, 2007
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