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MODELING THE ORBITAL SAMPLING EFFECT OF EXTRASOLAR MOONS

The Astrophysical journal, 2016-04, Vol.820 (2), p.88-88 [Peer Reviewed Journal]

2016. The American Astronomical Society. All rights reserved. ;ISSN: 0004-637X ;EISSN: 1538-4357 ;DOI: 10.3847/0004-637X/820/2/88

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  • Title:
    MODELING THE ORBITAL SAMPLING EFFECT OF EXTRASOLAR MOONS
  • Author: Heller, René ; Hippke, Michael ; Jackson, Brian
  • Subjects: Astronomical models ; Computer simulation ; Extrasolar planets ; instrumentation: photometers ; Limb darkening ; Mathematical analysis ; Mathematical models ; methods: analytical ; methods: data analysis ; methods: observational ; methods: statistical ; planets and satellites: detection ; Sampling ; Transit
  • Is Part Of: The Astrophysical journal, 2016-04, Vol.820 (2), p.88-88
  • Description: ABSTRACT The orbital sampling effect (OSE) appears in phase-folded transit light curves of extrasolar planets with moons. Analytical OSE models have hitherto neglected stellar limb darkening and non-zero transit impact parameters and assumed that the moon is on a circular, co-planar orbit around the planet. Here, we present an analytical OSE model for eccentric moon orbits, which we implement in a numerical simulator with stellar limb darkening that allows for arbitrary transit impact parameters. We also describe and publicly release a fully numerical OSE simulator (PyOSE) that can model arbitrary inclinations of the transiting moon orbit. Both our analytical solution for the OSE and PyOSE can be used to search for exomoons in long-term stellar light curves such as those by Kepler and the upcoming PLATO mission. Our updated OSE model offers an independent method for the verification of possible future exomoon claims via transit timing variations and transit duration variations. Photometrically quiet K and M dwarf stars are particularly promising targets for an exomoon discovery using the OSE.
  • Publisher: The American Astronomical Society
  • Language: English
  • Identifier: ISSN: 0004-637X
    EISSN: 1538-4357
    DOI: 10.3847/0004-637X/820/2/88
  • Source: Alma/SFX Local Collection
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