A nearly polar orbit for the extrasolar hot jupiter WASP-79b

B. C. Addison, C. G. Tinney, D. J. Wright, D. Bayliss, G. Zhou, J. D. Hartman, G. A. Bakos, B. Schmidt

Research output: Contribution to journalArticle

26 Scopus citations

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 theUCLES spectrograph on theAnglo-Australian Telescope. We have used the Rossiter McLaughlin effect to determine the sky-projected spin-orbit angle to be λ = -106 +19-13 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 Teff < 6250 Kand host hot Jupiters in spin-orbit misalignment.

Original languageEnglish (US)
Article numberL9
JournalAstrophysical Journal Letters
Volume774
Issue number1
DOIs
StatePublished - Sep 1 2013

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Keywords

  • planets and satellites: dynamical evolution and stability
  • stars: individual (WASP-79)
  • techniques: radial velocities

Fingerprint Dive into the research topics of 'A nearly polar orbit for the extrasolar hot jupiter WASP-79b'. Together they form a unique fingerprint.

  • Cite this

    Addison, B. C., Tinney, C. G., Wright, D. J., Bayliss, D., Zhou, G., Hartman, J. D., Bakos, G. A., & Schmidt, B. (2013). A nearly polar orbit for the extrasolar hot jupiter WASP-79b. Astrophysical Journal Letters, 774(1), [L9]. https://doi.org/10.1088/2041-8205/774/1/L9