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Title: A NEARLY POLAR ORBIT FOR THE EXTRASOLAR HOT JUPITER WASP-79b

We report the measurement of a spin-orbit misalignment for WASP-79b, a recently discovered, bloated hot Jupiter from the Wide Angle Search for Planets (WASP) survey. Data were obtained using the CYCLOPS2 optical-fiber bundle and its simultaneous calibration system feeding the UCLES spectrograph on the Anglo-Australian Telescope. We have used the Rossiter-McLaughlin effect to determine the sky-projected spin-orbit angle to be {lambda}= -106{sup +19}{sub -13} {sup o}. This result indicates a significant misalignment between the spin axis of the host star and the orbital plane of the planet-the planet being in a nearly polar orbit. WASP-79 is consistent with other stars that have T{sub eff} > 6250 K and host hot Jupiters in spin-orbit misalignment.
Authors:
; ;  [1] ; ; ;  [2] ; ;  [3]
  1. Exoplanetary Science Group, School of Physics, University of New South Wales, NSW 2052 (Australia)
  2. Research School of Astronomy and Astrophysics, Australian National University, Canberra, ACT 2611 (Australia)
  3. Department of Astrophysical Sciences, Princeton University, NJ 08544 (United States)
Publication Date:
OSTI Identifier:
22136547
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal Letters; Journal Volume: 774; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; CALIBRATION; OPTICAL FIBERS; ORBITS; PLANETS; SKY; SPIN; STAR EVOLUTION; STARS; TELESCOPES