Summary: SF2A 2002
F. Combes and D. Barret (eds)
EDPS Conference Series in Astronomy &Astrophysics
NEW APPROACHES FOR THE SEARCH FOR BINARY
PLANETS AND MOONS OF EXTRASOLAR PLANETS
Schneider, J. 1 , Arnold, L. 2 and Borkowski, V. 3
The search for binary planets and for satellites of extrasolar planets is rele-
vant for the understanding of planetary system evolution, the perspective of their
habitability and their impact of apparent characteristics of planets. The presence
of numerous satellites of Jupiter and Saturn tend to prove that they are common
objects in planetary systems. After a rst study based on the transit method (Sar-
toretti & Schneider 1999), we investigate here their detection by direct imaging of
The orbital revolution of a satellite around its parent planet (or of a binary
planet) has 4 remarquable phases:
- Phase 1: satellite's shadow on the planet.
- Phase 2: satellite transiting in front of the planet
- Phase 3: eclipse of the satellite by the planet.
- Phase 4: satellite transiting behind the planet
See the upper part of Fig. 1.