Qatar Exoplanet Survey: Qatar-6b - A Grazing Transiting Hot Jupiter

  • Khalid Alsubai
  • , Zlatan I. Tsvetanov
  • , David W. Latham
  • , Allyson Bieryla
  • , Gilbert A. Esquerdo
  • , Dimitris Mislis
  • , Stylianos Pyrzas
  • , Emma Foxell
  • , James McCormac
  • , Christoph Baranec
  • , Nicolas P.E. Vilchez
  • , Richard West
  • , Ali Esamdin
  • , Zhenwei Dang
  • , Hani M. Dalee
  • , Amani A. Al-Rajihi
  • , Abeer Kh Al-Harbi

    Research output: Contribution to journalArticlepeer-review

    12 Citations (Scopus)

    Abstract

    We report the discovery of Qatar-6b, a new transiting planet identified by the Qatar Exoplanet Survey (QES). The planet orbits a relatively bright (V = 11.44), early-K main-sequence star at an orbital period of P ∼ 3.506 days. An SED fit to available multi-band photometry, ranging from the near-UV to the mid-IR, yields a distance of d = 101 ±6 pc to the system. From a global fit to follow-up photometric and spectroscopic observations, we calculate the mass and radius of the planet to be M P = 0.67 ±0.07 M J and R P = 1.06 ±0.07 R J, respectively. We use multi-color photometric light curves to show that the transit is grazing, making Qatar-6b one of the few exoplanets known in a grazing transit configuration. It adds to the short list of targets that offer the best opportunity to look for additional bodies in the host planetary system through variations in the transit impact factor and duration.

    Original languageEnglish
    Article number52
    JournalAstronomical Journal
    Volume155
    Issue number2
    DOIs
    Publication statusPublished - Feb 2018

    Keywords

    • planetary systems
    • planets and satellites: detection
    • planets and satellites: fundamental parameters
    • techniques: photometric

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