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HAT-P-55b: A Hot Jupiter Transiting a Sun-like Star

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arxiv 1506.03734 v1 pith:DMTWJH4X submitted 2015-06-11 astro-ph.EP

HAT-P-55b: A Hot Jupiter Transiting a Sun-like Star

classification astro-ph.EP
keywords jupiterplanettransitingdiscoveryhat-p-55bmassmassesradii
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We report the discovery of a new transiting extrasolar planet, HAT-P-55b. The planet orbits a V = 13.207 +/- 0.039 sun-like star with a mass of 1.013 +/- 0.037 solar masses, a radius of 1.011 +/- 0.036 solar radii and a metallicity of -0.03 +/- 0.08. The planet itself is a typical hot Jupiter with a period of 3.5852467 +/- 0.0000064 days, a mass of 0.582 +/- 0.056 Jupiter masses and a radius of 1.182 +/- 0.055 Jupiter radii. This discovery adds to the increasing sample of transiting planets with measured bulk densities, which is needed to put constraints on models of planetary structure and formation theories.

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