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

TL;DR

This paper reports the discovery of HAT-P-55b, a hot Jupiter transiting a Sun-like star, providing valuable data for understanding planetary structure and formation.

Contribution

The paper presents the discovery and characterization of a new transiting hot Jupiter, expanding the sample for planetary structure and formation studies.

Findings

HAT-P-55b has a period of 3.585 days.

The planet's mass is 0.582 Jupiter masses.

The planet's radius is 1.182 Jupiter radii.

Abstract

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.