A Spin-Orbit Alignment for the Hot Jupiter HATS-3b
作者： D. Bayliss , D. J. Wright , C. G. Tinney , B. C. Addison
DOI: 10.1088/0004-637X/792/2/112
关键词: Astrophysics 、 Physics 、 Stars 、 Telescope 、 Astronomy 、 Exoplanet 、 Transit (astronomy) 、 Spectrograph 、 Hot Jupiter 、 Orbit 、 Orbital plane
摘要: We have measured the alignment between orbit of HATS-3b (a recently discovered, slightly inflated Hot Jupiter) and spin-axis its host star. Data were obtained using CYCLOPS2 optical-fiber bundle simultaneous calibration system feeding UCLES spectrograph on Anglo-Australian Telescope. The sky-projected spin-orbit angle $\lambda = 3\pm25^{\circ}$ was determined from spectroscopic measurements Rossiter-McLaughlin effect. This is first exoplanet discovered through HATSouth transit survey to measured. Our results indicate that orbital plane consistent with being aligned spin axis low obliquity HATS-3 system, which has a relatively hot mid F-type star, agrees general trend observed for Jupiter stars effective temperatures $>6250$K randomly distributed angles.
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