HAT - P - 9 b : A LOW DENSITY PLANET TRANSITING A MODERATELY FAINT F STAR 1
نویسندگان
چکیده
We report the discovery of a planet transiting a moderately faint (V = 12.3mag) late F star, with an orbital period of 3.92289 ± 0.00004days. From the transit light curve and radial velocity measurements we determine that the radius of the planet is Rp = 1.40 ± 0.06RJup and that the mass is Mp = 0.78 ± 0.09MJup. The density of the new planet, ρp = 0.35 ± 0.06 g cm , fits to the low-density tail of the currently known transiting planets. We find that the center of transit is at Tc = 2,454,417.9077± 0.0003 (HJD), and the total transit duration is 0.143 ± 0.004days. The host star has M⋆ = 1.28± 0.13M⊙ and R⋆ = 1.32± 0.07R⊙. Subject headings: stars: individual: GSC 02463-00281 – planetary systems: individual: HAT-P-9b
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P - 9 b : A LOW DENSITY PLANET TRANSITING A MODERATELY FAINT F STAR 1
We report the discovery of a planet transiting a moderately faint (V = 12.3 mag) late F star, with an orbital period of 3.92289 ± 0.00004 days. From the transit light curve and radial velocity measurements we determine that the radius of the planet is R p = 1.40 ± 0.06 R Jup and that the mass is M p = 0.78 ± 0.09 M Jup. The density of the new planet, ρ p = 0.35 ± 0.06 g cm −3 , fits to the low-...
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