Five Kepler target stars that show multiple transiting exoplanet candidates

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We present and discuss five candidate exoplanetary systems identified with the Kepler spacecraft. These five systems show transits from multiple exoplanet candidates. Should these objects prove to be planetary in nature, then these five systems open new opportunities for the field of exoplanets and provide new insights into the formation and dynamical evolution of planetary systems. We discuss the methods used to identify multiple transiting objects from the Kepler photometry as well as the false-positive rejection methods that have been applied to these data. One system shows transits from three distinct objects while the remaining four systems show transits from ... continued below

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1226

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Steffen, Jason H.; /Fermilab; Batalha, Natalie M.; U., /San Jose State; Borucki, William J.; /NASA, Ames et al. June 1, 2010.

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We present and discuss five candidate exoplanetary systems identified with the Kepler spacecraft. These five systems show transits from multiple exoplanet candidates. Should these objects prove to be planetary in nature, then these five systems open new opportunities for the field of exoplanets and provide new insights into the formation and dynamical evolution of planetary systems. We discuss the methods used to identify multiple transiting objects from the Kepler photometry as well as the false-positive rejection methods that have been applied to these data. One system shows transits from three distinct objects while the remaining four systems show transits from two objects. Three systems have planet candidates that are near mean motion commensurabilities - two near 2:1 and one just outside 5:2. We discuss the implications that multitransiting systems have on the distribution of orbital inclinations in planetary systems, and hence their dynamical histories; as well as their likely masses and chemical compositions. A Monte Carlo study indicates that, with additional data, most of these systems should exhibit detectable transit timing variations (TTV) due to gravitational interactions - though none are apparent in these data. We also discuss new challenges that arise in TTV analyses due to the presence of more than two planets in a system.

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1226

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  • Journal Name: Submitted to Astrophys.J.; Journal Volume: 725; Journal Issue: 1

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  • Report No.: FERMILAB-PUB-10-198-A
  • Grant Number: AC02-07CH11359
  • DOI: 10.1088/0004-637X/725/1/1226 | External Link
  • Office of Scientific & Technical Information Report Number: 982236
  • Archival Resource Key: ark:/67531/metadc1015170

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • June 1, 2010

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  • Oct. 14, 2017, 8:36 a.m.

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  • Oct. 24, 2017, 2:16 p.m.

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Steffen, Jason H.; /Fermilab; Batalha, Natalie M.; U., /San Jose State; Borucki, William J.; /NASA, Ames et al. Five Kepler target stars that show multiple transiting exoplanet candidates, article, June 1, 2010; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc1015170/: accessed December 15, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.