HD80606b Transit Observed by MOST

Details HD80606b Transit Observed by MOST HD80606b Transit Observed by MOST

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21742903r&link_type=abstract

American Astronomical Society, AAS Meeting #217, #429.03; Bulletin of the American Astronomical Society, Vol. 43, 2011

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Scientific paper

We present our results of the occultation and the full 12 hour transit of HD80606b which we observed with the MOST (Microvariablity and Oscillations of STars) telescope. With its unusually high eccentricity of 0.933, HD80606b challenges our understanding of the evolution of planetary systems. Due to the planet's large variance of distance from its star, the atmospheric dynamics of HD80606b are likely to be unlike any other exoplanet discovered to date. By constraining the parameters of this system, we will better understand the dynamics of this planet and will improve numerous planetary models. We determine a best fit of the primary transit for the planetary radius, inclination, and mid-transit time. The difficulty in constraining our fits comes from several insufficiently understood parameters including mass and radius of HD80606, as well as the eccentricity, and argument of periapsis. We constrain these conflicting variables with the values determined by both Winn et al. 2009 and Hebrard et al. 2010. Hebrard et al. 2010 also noticed a mid-transit timing issue. We ran two separate fits employing the parameters determined by each paper mentioned above. We determine that our calculated mid-transit time was less than 1s away from Hebrard et al. 2010.

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