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Determination of stellar, orbital and planetary parameters using complete Monte-Carlo analysis – the case of HAT-P-7b

Published online by Cambridge University Press:  01 May 2008

András Pál ,
Gáspár Á. Bakos ,
Robert W. Noyes  and
Guillermo Torres
András Pál
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden st., Cambridge, MA 02138, USA email: [email protected] Dept. of Astronomy, Eötvös Loránd University, Pázmány Peter stny 1/A, Budapest, 1117, Hungary
Gáspár Á. Bakos
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden st., Cambridge, MA 02138, USA email: [email protected]
Robert W. Noyes
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden st., Cambridge, MA 02138, USA email: [email protected]
Guillermo Torres
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden st., Cambridge, MA 02138, USA email: [email protected]
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Abstract

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The recently discovered transiting very hot Jupiter, HAT-P-7b, a planet detected by the telescopes of HATNet, turned out to be among the ones subjected to the highest irradiation from the parent star. In order to best characterize this particular planet, we carried out an analysis based on a complete and simultaneous Monte-Carlo solution using all available data. We included the discovery light curves, partial follow-up light curves, the radial velocity data, and we used the stellar evolution models to infer the stellar properties.

This self-consistent way of modeling provides the most precise estimate of the a posteriori distributions of all of the system parameters of interest, and avoids making assumptions on the values and uncertainties of any of the internally derived variables describing the system. This analysis demonstrates that even partial light curve information can be valuable. This may become very important for future discoveries of planets with longer periods – and therefore longer transit durations – where the chance of observing a full event is small.

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S253: Transiting Planets , May 2008 , pp. 428 - 431
Copyright
Copyright © International Astronomical Union 2009

References

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