Transit and secondary eclipse photometry in the near-infrared

Details Transit and secondary eclipse photometry in the near-infrared Transit and secondary eclipse photometry in the near-infrared

2007-05-02

arxiv.org/abs/0705.0215v1

Astronomy and Astrophysics

Astrophysics

6 pages, to appear in the PASP proceedings of "Transiting Extrasolar Planets Workshop" MPIA Heidelberg Germany, 25th-28th Sept

Scientific paper

Near-infrared photometry of transiting extrasolar planets can be of great scientific value. It is however not straightforward to reach the necessary millimagnitude precision. Here we report on our attempts to observe transits and secondary eclipses of several extrasolar planets at 2.2 micron. Best results have been obtained on OGLE-TR-113b using the SOFI near-infrared camera on ESO's New Technology Telescope. Its K-band transit shows a remarkably flat bottom indicating low stellar limb darkening. Secondary eclipse photometry has resulted in a formal 3 sigma detection, but residual systematic effects make this detection rather uncertain.

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