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

Abstract

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
Journal Name:
Astrophysical Journal Letters
Additional Journal Information:
Journal Volume: 774; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 2041-8205
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; CALIBRATION; OPTICAL FIBERS; ORBITS; PLANETS; SKY; SPIN; STAR EVOLUTION; STARS; TELESCOPES

Citation Formats

Addison, B. C., Tinney, C. G., Wright, D. J., Bayliss, D., Zhou, G., Schmidt, B., Hartman, J. D., and Bakos, G. A., E-mail: b.addison@unsw.edu.au. A NEARLY POLAR ORBIT FOR THE EXTRASOLAR HOT JUPITER WASP-79b. United States: N. p., 2013. Web. doi:10.1088/2041-8205/774/1/L9.
Addison, B. C., Tinney, C. G., Wright, D. J., Bayliss, D., Zhou, G., Schmidt, B., Hartman, J. D., & Bakos, G. A., E-mail: b.addison@unsw.edu.au. A NEARLY POLAR ORBIT FOR THE EXTRASOLAR HOT JUPITER WASP-79b. United States. doi:10.1088/2041-8205/774/1/L9.
Addison, B. C., Tinney, C. G., Wright, D. J., Bayliss, D., Zhou, G., Schmidt, B., Hartman, J. D., and Bakos, G. A., E-mail: b.addison@unsw.edu.au. Sun . "A NEARLY POLAR ORBIT FOR THE EXTRASOLAR HOT JUPITER WASP-79b". United States. doi:10.1088/2041-8205/774/1/L9.
@article{osti_22136547,
title = {A NEARLY POLAR ORBIT FOR THE EXTRASOLAR HOT JUPITER WASP-79b},
author = {Addison, B. C. and Tinney, C. G. and Wright, D. J. and Bayliss, D. and Zhou, G. and Schmidt, B. and Hartman, J. D. and Bakos, G. A., E-mail: b.addison@unsw.edu.au},
abstractNote = {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.},
doi = {10.1088/2041-8205/774/1/L9},
journal = {Astrophysical Journal Letters},
issn = {2041-8205},
number = 1,
volume = 774,
place = {United States},
year = {2013},
month = {9}
}