Search for outer massive bodies around transiting planetary systems: Candidates of faint stellar companions around HAT-P-7

Norio Narita, Tomoyuki Kudo, Carolina Bergfors, Makiko Nagasawa, Christian Thalmann, Bun'Ei Sato, Ryuji Suzuki, Ryo Kandori, Markus Janson, Miwa Goto, Wolfgang Brandner, Shigeru Ida, Lyu Abe, Joseph Carson, Sebastian E. Egner, Markus Feldt, Taras Golota, Olivier Guyon, Jun Hashimoto, Yutaka HayanoMasahiko Hayashi, Saeko S. Hayashi, Thomas Henning, Klaus W. Hodapp, Miki Ishh, Gillian R. Knapp, Nobuhiko Kusakabe, Masayuki Kuzuhara, Taro Matsuo, Michael W. McElwain, Shoken M. Mlyama, Jun Ichi Morino, Amaya Moro-Martin, Tetsuo Nlshlmura, Tae Soo Pyo, Eugene Serabyn, Takuya Suenaga, Hiroshi Suto, Yasuhiro Haruhi Takahashi, Michihiro Takami, Naruhisa Takato, Hiroshi Terada, Daigo Tomono, Edwin L. Turner, Makoto Watanabe, Toru Yamada, Hideki Takami, Tomonori Usuda, Motohide Tamura

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

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.

Original languageEnglish (US)
Pages (from-to)779-786
Number of pages8
JournalPublications of the Astronomical Society of Japan
Volume62
Issue number3
StatePublished - 2010

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planetary systems
planets
planet
binary stars
scattering
orbits
orbitals

Keywords

  • Binaries
  • General-stars
  • High angular resolution
  • Individual (HAT-P-7)-techniques
  • Planetary systems
  • Stars

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Narita, N., Kudo, T., Bergfors, C., Nagasawa, M., Thalmann, C., Sato, BE., ... Tamura, M. (2010). Search for outer massive bodies around transiting planetary systems: Candidates of faint stellar companions around HAT-P-7. Publications of the Astronomical Society of Japan, 62(3), 779-786.

Search for outer massive bodies around transiting planetary systems : Candidates of faint stellar companions around HAT-P-7. / 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.; Ishh, Miki; Knapp, Gillian R.; Kusakabe, Nobuhiko; Kuzuhara, Masayuki; Matsuo, Taro; McElwain, Michael W.; Mlyama, Shoken M.; Morino, Jun Ichi; Moro-Martin, Amaya; Nlshlmura, Tetsuo; Pyo, Tae Soo; Serabyn, Eugene; Suenaga, Takuya; Suto, Hiroshi; Takahashi, Yasuhiro Haruhi; Takami, Michihiro; Takato, Naruhisa; Terada, Hiroshi; Tomono, Daigo; Turner, Edwin L.; Watanabe, Makoto; Yamada, Toru; Takami, Hideki; Usuda, Tomonori; Tamura, Motohide.

In: Publications of the Astronomical Society of Japan, Vol. 62, No. 3, 2010, p. 779-786.

Research output: Contribution to journalArticle

Narita, N, Kudo, T, Bergfors, C, Nagasawa, M, Thalmann, C, Sato, BE, Suzuki, R, Kandori, R, Janson, M, Goto, M, Brandner, W, Ida, S, Abe, L, Carson, J, Egner, SE, Feldt, M, Golota, T, Guyon, O, Hashimoto, J, Hayano, Y, Hayashi, M, Hayashi, SS, Henning, T, Hodapp, KW, Ishh, M, Knapp, GR, Kusakabe, N, Kuzuhara, M, Matsuo, T, McElwain, MW, Mlyama, SM, Morino, JI, Moro-Martin, A, Nlshlmura, T, Pyo, TS, Serabyn, E, Suenaga, T, Suto, H, Takahashi, YH, Takami, M, Takato, N, Terada, H, Tomono, D, Turner, EL, Watanabe, M, Yamada, T, Takami, H, Usuda, T & Tamura, M 2010, 'Search for outer massive bodies around transiting planetary systems: Candidates of faint stellar companions around HAT-P-7', Publications of the Astronomical Society of Japan, vol. 62, no. 3, pp. 779-786.
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. ; Ishh, Miki ; Knapp, Gillian R. ; Kusakabe, Nobuhiko ; Kuzuhara, Masayuki ; Matsuo, Taro ; McElwain, Michael W. ; Mlyama, Shoken M. ; Morino, Jun Ichi ; Moro-Martin, Amaya ; Nlshlmura, Tetsuo ; Pyo, Tae Soo ; Serabyn, Eugene ; Suenaga, Takuya ; Suto, Hiroshi ; Takahashi, Yasuhiro Haruhi ; Takami, Michihiro ; Takato, Naruhisa ; Terada, Hiroshi ; Tomono, Daigo ; Turner, Edwin L. ; Watanabe, Makoto ; Yamada, Toru ; Takami, Hideki ; Usuda, Tomonori ; Tamura, Motohide. / Search for outer massive bodies around transiting planetary systems : Candidates of faint stellar companions around HAT-P-7. In: Publications of the Astronomical Society of Japan. 2010 ; Vol. 62, No. 3. pp. 779-786.
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title = "Search for outer massive bodies around transiting planetary systems: Candidates of faint stellar companions around HAT-P-7",
abstract = "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.",
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author = "Norio Narita and Tomoyuki Kudo and Carolina Bergfors and Makiko Nagasawa and Christian Thalmann and Bun'Ei Sato and Ryuji Suzuki and Ryo Kandori and Markus Janson and Miwa Goto and Wolfgang Brandner and Shigeru Ida and Lyu Abe and Joseph Carson and Egner, {Sebastian E.} and Markus Feldt and Taras Golota and Olivier Guyon and Jun Hashimoto and Yutaka Hayano and Masahiko Hayashi and Hayashi, {Saeko S.} and Thomas Henning and Hodapp, {Klaus W.} and Miki Ishh and Knapp, {Gillian R.} and Nobuhiko Kusakabe and Masayuki Kuzuhara and Taro Matsuo and McElwain, {Michael W.} and Mlyama, {Shoken M.} and Morino, {Jun Ichi} and Amaya Moro-Martin and Tetsuo Nlshlmura and Pyo, {Tae Soo} and Eugene Serabyn and Takuya Suenaga and Hiroshi Suto and Takahashi, {Yasuhiro Haruhi} and Michihiro Takami and Naruhisa Takato and Hiroshi Terada and Daigo Tomono and Turner, {Edwin L.} and Makoto Watanabe and Toru Yamada and Hideki Takami and Tomonori Usuda and Motohide Tamura",
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T1 - Search for outer massive bodies around transiting planetary systems

T2 - Candidates of faint stellar companions around HAT-P-7

AU - Narita, Norio

AU - Kudo, Tomoyuki

AU - Bergfors, Carolina

AU - Nagasawa, Makiko

AU - Thalmann, Christian

AU - Sato, Bun'Ei

AU - Suzuki, Ryuji

AU - Kandori, Ryo

AU - Janson, Markus

AU - Goto, Miwa

AU - Brandner, Wolfgang

AU - Ida, Shigeru

AU - Abe, Lyu

AU - Carson, Joseph

AU - Egner, Sebastian E.

AU - Feldt, Markus

AU - Golota, Taras

AU - Guyon, Olivier

AU - Hashimoto, Jun

AU - Hayano, Yutaka

AU - Hayashi, Masahiko

AU - Hayashi, Saeko S.

AU - Henning, Thomas

AU - Hodapp, Klaus W.

AU - Ishh, Miki

AU - Knapp, Gillian R.

AU - Kusakabe, Nobuhiko

AU - Kuzuhara, Masayuki

AU - Matsuo, Taro

AU - McElwain, Michael W.

AU - Mlyama, Shoken M.

AU - Morino, Jun Ichi

AU - Moro-Martin, Amaya

AU - Nlshlmura, Tetsuo

AU - Pyo, Tae Soo

AU - Serabyn, Eugene

AU - Suenaga, Takuya

AU - Suto, Hiroshi

AU - Takahashi, Yasuhiro Haruhi

AU - Takami, Michihiro

AU - Takato, Naruhisa

AU - Terada, Hiroshi

AU - Tomono, Daigo

AU - Turner, Edwin L.

AU - Watanabe, Makoto

AU - Yamada, Toru

AU - Takami, Hideki

AU - Usuda, Tomonori

AU - Tamura, Motohide

PY - 2010

Y1 - 2010

N2 - 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.

AB - 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.

KW - Binaries

KW - General-stars

KW - High angular resolution

KW - Individual (HAT-P-7)-techniques

KW - Planetary systems

KW - Stars

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