Detectability of planetary rings around an extrasolar planet from reflected-light photometry

Details Detectability of planetary rings around an extrasolar planet from reflected-light photometry Detectability of planetary rings around an extrasolar planet from reflected-light photometry

2005-10-19

arxiv.org/abs/astro-ph/0510594v1

Astronomy and Astrophysics

Astrophysics

A 6-page 4-figure paper to appear in the proceedings of the IAU Colloquium 200 (IAUC 200) 'Direct Imaging of Exoplanets: Scien

Scientific paper

10.1017/S1743921306009173

The next generation of high-contrast imaging instruments will provide the first unresolved image of an extrasolar planet. While the emitted infrared light from the planet in thermal equilibrium should show almost no phase effect, the reflected visible light will vary with the orbital phase angle. We study the photometric variation of the reflected light with orbital phase of a ringed extrasolar planet. We show that a ring around an extrasolar planet, both obviously unresolved, can be detected by its specific photometric signature. Keywords: Stars: planetary systems -- Planets: rings -- Extrasolar planet characterization

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