Spin-orbit inclinations of the exoplanetary systems HAT-P-8b, HAT-P-9b, HAT-P-16b, and HAT-P-23b
نویسندگان
چکیده
منابع مشابه
HAT-P-44b, HAT-P-45b, AND HAT-P-46b: THREE TRANSITING HOT JUPITERS IN POSSIBLE MULTI- PLANET SYSTEMS
We report the discovery by the HATNet survey of three new transiting extrasolar planets orbiting moderately bright (V=13.2, 12.8 and 11.9) stars. The planets have orbital periods of 4.3012, 3.1290, and 4.4631 days, masses of 0.39, 0.89, and 0.49MJ, and radii of 1.28, 1.43, and 1.28RJ. The stellar hosts have masses of 0.94, 1.26, and 1.28M⊙. Each system shows significant systematic variations in...
متن کاملWARM SPITZER PHOTOMETRY OF THREE HOT JUPITERS: HAT-P-3b, HAT-P-4b AND HAT-P-12b
We present Warm Spitzer/IRAC secondary eclipse time series photometry of three short-period transiting exoplanets, HAT-P-3b, HAT-P-4b and HAT-P-12b, in both the available 3.6 and 4.5μm bands. HAT-P-3b and HAT-P-4b are Jupiter-mass, objects orbiting an early K and an early G dwarf stars, respectively. For HAT-P-3b we find eclipse depths of 0.112% −0.030% (3.6μm) and 0.094% +0.016% −0.009% (4.5μm...
متن کاملThe HAT-P-13 Exoplanetary System: Evidence for Spin-Orbit Alignment and a Third Companion
We present new radial-velocity measurements of HAT-P-13, a star with two previously known companions: a transiting giant planet “b” with an orbital period of 3 days, and a more massive object “c” on a 1.2 yr, highly eccentric orbit. For this system, dynamical considerations would lead to constraints on planet b’s interior structure, if it could be shown that the orbits are coplanar and apsidall...
متن کاملStarspots, Spin-orbit Misalignment, and Active Latitudes in the Hat-p-11 Exoplanetary System
We present the analysis of 4 months of Kepler photometry of the K4V star HAT-P-11, including 26 transits of its “super-Neptune” planet. The transit data exhibit numerous anomalies that we interpret as passages of the planet over dark starspots. These spot-crossing anomalies preferentially occur at two specific phases of the transit. These phases can be understood as the intersection points betw...
متن کاملORBITAL ORIENTATIONS OF EXOPLANETS: HAT-P-4b IS PROGRADE AND HAT-P-14b IS RETROGRADE
We present observations of the Rossiter-McLaughlin effect for two exoplanetary systems, revealing the orientations of their orbits relative to the rotation axes of their parent stars. HAT-P-4b is prograde, with a sky-projected spin-orbit angle of λ = −4.9 ± 11.9 degrees. In contrast, HAT-P-14b is retrograde, with λ = 189.1± 5.1 degrees. These results conform with a previously noted pattern amon...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2011
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/201116760