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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 559366.0, MPI für Astronomie / Publikationen_mpia
Search for outer massive bodies around transiting planetary systems: candidates of faint stellar companions around HAT-P-7
Authors:Narita, N.; Kudo, T.; Bergfors, C.; Nagasawa, M.; Thalmann, C.; Sato, B.; Suzuki, R.; Kandori, R.; Janson, M.; Goto, M.; Brandner, W.; Ida, S.; Abe, L.; Carson, J.; Egner, S. E.; Feldt, M.; Golota, T.; Guyon, O.; Hashimoto, J.; Hayano, Y.; Hayashi, M.; Hayashi, S. S.; Henning, T.; Hodapp, K. W.; Ishii, M.; Knapp, G. R.; Kusakabe, N.; Kuzuhara, M.; Matsuo, T.; McElwain, M. W.; Miyama, S. M.; Morino, J. I.; Moro-Martin, A.; Nishimura, T.; Pyo, T. S.; Serabyn, E.; Suenaga, T.; Suro, H.; Takahashi, Y. H.; Takami, M.; Takato, N.; Terada, H.; Tomono, D.; Turner, E. L.; Watanabe, M.; Yamada, T.; Takami, H.; Usuda, T.; Tamura, M.
Date of Publication (YYYY-MM-DD):2010
Title of Journal:Publications of the Astronomical Society of Japan
Journal Abbrev.:PASJ
Issue / Number:3
Start Page:779
End Page:786
Review Status:Peer-review
Audience:Experts Only
Abstract / Description: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, or 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 possible roles played by such companions on the orbital evolution of HAT-P-7b. We conclude that as there is a third body in the system as reported by Winn et al. (2009, ApJL, 763, L99), the Kozai migration is less likely while planet-planet scattering is possible.
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:URL:http://adsabs.harvard.edu/abs/2010PASJ...62..779N [ID No:1]
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