Detecting companions to extrasolar planets using mutual events

Details Detecting companions to extrasolar planets using mutual events Detecting companions to extrasolar planets using mutual events

2007-03-23

arxiv.org/abs/astro-ph/0703609v1

A&A 464, 1133-1138 (2007)

Astronomy and Astrophysics

Astrophysics

6 pages, 7 figures

Scientific paper

10.1051/0004-6361:20066111

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. 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. We show that companions can be detected and their radius measured down to lunar sizes.

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