Revisiting the Orbital Parameters for the XO-3 System

POSTER

Abstract

We present 12 new transit light curves, and 16 new out-of-transit radial velocity measurements for the XO-3 system. By modelling our newly collected measurements, together with archived photometric and Doppler velocimetric data, we confirmed the unusual configuration of the XO-3 system, containing a rather massive planet in a relatively eccentric and shortperiod orbit around a massive star Furthermore, we find no strong evidence for a temporal change of either Vsini (and by extension, the stellar spin vector of XO-3), or the transit profile (and thus orbital angular momentum vector of XO-3b). We conclude that the discrepancy in previous Rossiter-McLaughlin measurements may have stemmed from observational noise.

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Authors

  • Keduse Worku

    Yale University

  • Ramon Lopez

    University of Central Florida, Yale University, School of Astronomy and Space Science, Chinese Academy of Sciences, University of California at Santa Cruz, University of Southern Queensland, Carnegie Institute of Washington, Massachusetts Institute of Technology

  • Ramon Lopez

    University of Central Florida, Yale University, School of Astronomy and Space Science, Chinese Academy of Sciences, University of California at Santa Cruz, University of Southern Queensland, Carnegie Institute of Washington, Massachusetts Institute of Technology

  • Ramon Lopez

    University of Central Florida, Yale University, School of Astronomy and Space Science, Chinese Academy of Sciences, University of California at Santa Cruz, University of Southern Queensland, Carnegie Institute of Washington, Massachusetts Institute of Technology

  • Ramon Lopez

    University of Central Florida, Yale University, School of Astronomy and Space Science, Chinese Academy of Sciences, University of California at Santa Cruz, University of Southern Queensland, Carnegie Institute of Washington, Massachusetts Institute of Technology

  • Ramon Lopez

    University of Central Florida, Yale University, School of Astronomy and Space Science, Chinese Academy of Sciences, University of California at Santa Cruz, University of Southern Queensland, Carnegie Institute of Washington, Massachusetts Institute of Technology

  • Ramon Lopez

    University of Central Florida, Yale University, School of Astronomy and Space Science, Chinese Academy of Sciences, University of California at Santa Cruz, University of Southern Queensland, Carnegie Institute of Washington, Massachusetts Institute of Technology

  • Ramon Lopez

    University of Central Florida, Yale University, School of Astronomy and Space Science, Chinese Academy of Sciences, University of California at Santa Cruz, University of Southern Queensland, Carnegie Institute of Washington, Massachusetts Institute of Technology

  • Ramon Lopez

    University of Central Florida, Yale University, School of Astronomy and Space Science, Chinese Academy of Sciences, University of California at Santa Cruz, University of Southern Queensland, Carnegie Institute of Washington, Massachusetts Institute of Technology

  • Ramon Lopez

    University of Central Florida, Yale University, School of Astronomy and Space Science, Chinese Academy of Sciences, University of California at Santa Cruz, University of Southern Queensland, Carnegie Institute of Washington, Massachusetts Institute of Technology

  • Ramon Lopez

    University of Central Florida, Yale University, School of Astronomy and Space Science, Chinese Academy of Sciences, University of California at Santa Cruz, University of Southern Queensland, Carnegie Institute of Washington, Massachusetts Institute of Technology

  • Ramon Lopez

    University of Central Florida, Yale University, School of Astronomy and Space Science, Chinese Academy of Sciences, University of California at Santa Cruz, University of Southern Queensland, Carnegie Institute of Washington, Massachusetts Institute of Technology

  • Ramon Lopez

    University of Central Florida, Yale University, School of Astronomy and Space Science, Chinese Academy of Sciences, University of California at Santa Cruz, University of Southern Queensland, Carnegie Institute of Washington, Massachusetts Institute of Technology

  • Ramon Lopez

    University of Central Florida, Yale University, School of Astronomy and Space Science, Chinese Academy of Sciences, University of California at Santa Cruz, University of Southern Queensland, Carnegie Institute of Washington, Massachusetts Institute of Technology

  • Ramon Lopez

    University of Central Florida, Yale University, School of Astronomy and Space Science, Chinese Academy of Sciences, University of California at Santa Cruz, University of Southern Queensland, Carnegie Institute of Washington, Massachusetts Institute of Technology

  • Ramon Lopez

    University of Central Florida, Yale University, School of Astronomy and Space Science, Chinese Academy of Sciences, University of California at Santa Cruz, University of Southern Queensland, Carnegie Institute of Washington, Massachusetts Institute of Technology

  • Ramon Lopez

    University of Central Florida, Yale University, School of Astronomy and Space Science, Chinese Academy of Sciences, University of California at Santa Cruz, University of Southern Queensland, Carnegie Institute of Washington, Massachusetts Institute of Technology