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High cadence near-infrared transit timing observations of extrasolar planets

Published online by Cambridge University Press:  21 October 2010

Claudio Cáceres ,
Valentin D. Ivanov ,
Dante ~Minniti ,
Dominique Naef ,
Claudio Melo ,
Elena Mason ,
Fernando Selman  and
Grzegorz Pietrzynsky
Claudio Cáceres
Affiliation:
European Southern Observatory Pontificia Universidad Católica de Chile
Valentin D. Ivanov
Affiliation:
European Southern Observatory
Dante ~Minniti
Affiliation:
Pontificia Universidad Católica de Chile
Dominique Naef
Affiliation:
European Southern Observatory
Claudio Melo
Affiliation:
European Southern Observatory
Elena Mason
Affiliation:
European Southern Observatory
Fernando Selman
Affiliation:
European Southern Observatory
Grzegorz Pietrzynsky
Affiliation:
Universidad de Concepción email: ccaceres@eso.org
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Abstract

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Currently the only technique sensitive to Earth mass planets around nearby stars (that are too close for microlensing) is the monitoring of the transit time variations of the transiting extrasolar planets. We search for additional planets in the systems of the hot-Neptune GJ-436 b, and the hot-Jupiter XO-1 b, using high cadence observations in the J and KS bands, with the SofI and ISAAC instruments from La Silla Paranal Observatory. New high-precision transit timing measurements were used to derive new ephemeris. No statistically significant timing deviations were detected. We demonstrate that the high cadence ground based near-infrared observations are successful in constraining the mean transit time to 30 sec, and are a viable alternative to space missions.

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Highlights H15: Highlights of Astronomy , November 2009 , pp. 688 - 689
Copyright
Copyright © International Astronomical Union 2010

References

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