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Narita, Norio; Kudo, Tomoyuki; Bergfors, Carolina; Nagasawa, Makiko; Thalmann, Christian; Sato, Bun’ei; Suzuki, Ryuji; Kandori, Ryo; Janson, Markus; Goto, Miwa; Brandner, Wolfgang; Ida, Shigeru; Abe, Lyu; Carson, Joseph; Egner, Sebastian E.; Feldt, Markus; Golota, Taras; Guyon, Olivier; Hashimoto, Jun; Hayano, Yutaka; Hayashi, Masahiko; Hayashi, Saeko S.; Henning, Thomas; Hodapp, Klaus W.; [...]

Search for Outer Massive Bodies around Transiting Planetary Systems: Candidates of Faint Stellar Companions around HAT-P-7

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  • Medientyp: E-Artikel
  • Titel: Search for Outer Massive Bodies around Transiting Planetary Systems: Candidates of Faint Stellar Companions around HAT-P-7
  • Beteiligte: Narita, Norio; Kudo, Tomoyuki; Bergfors, Carolina; Nagasawa, Makiko; Thalmann, Christian; Sato, Bun’ei; Suzuki, Ryuji; Kandori, Ryo; Janson, Markus; Goto, Miwa; Brandner, Wolfgang; Ida, Shigeru; Abe, Lyu; Carson, Joseph; Egner, Sebastian E.; Feldt, Markus; Golota, Taras; Guyon, Olivier; Hashimoto, Jun; Hayano, Yutaka; Hayashi, Masahiko; Hayashi, Saeko S.; Henning, Thomas; Hodapp, Klaus W.; [...]
  • Erschienen: Oxford University Press (OUP), 2010
  • Erschienen in: Publications of the Astronomical Society of Japan
  • Sprache: Englisch
  • DOI: 10.1093/pasj/62.3.779
  • ISSN: 0004-6264; 2053-051X
  • Schlagwörter: Space and Planetary Science ; Astronomy and Astrophysics
  • Entstehung:
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  • Beschreibung: <jats:p>We present results of direct imaging observations for HAT-P-7 taken with the Subaru HiCIAO and the Calar Alto AstraLux. Since the close-in transiting planet HAT-P-7b was reported to have a highly tilted orbit, massive bodies such as giant planets, brown dwarfs, and a binary star are expected to exist in the outer region of this system. We show that there are indeed two candidates for distant faint stellar companions around HAT-P-7. We discuss how such companions can play a role on the orbital evolution of HAT-P-7b. We conclude that since there is a third body in the system, as reported by Winn et al. (2009, ApJ, 763, L99), Kozai migration is less likely, while planet–planet scattering is possible.</jats:p>