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 Hayano; Masahiko 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

doi:10.1093/pasj/62.3.779

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

Astrophysical Sciences

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

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 language	English (US)
Pages (from-to)	779-786
Number of pages	8
Journal	Publications of the Astronomical Society of Japan
Volume	62
Issue number	3
DOIs	https://doi.org/10.1093/pasj/62.3.779
State	Published - 2010

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

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

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10.1093/pasj/62.3.779

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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, S. E., Feldt, M., Golota, T., Guyon, O., Hashimoto, J., ... 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. https://doi.org/10.1093/pasj/62.3.779

@article{72ae62ac876149d784214314864334f7,

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.",

keywords = "Binaries, General-stars, High angular resolution, Individual (HAT-P-7)-techniques, Planetary systems, Stars",

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",

year = "2010",

doi = "10.1093/pasj/62.3.779",

language = "English (US)",

volume = "62",

pages = "779--786",

journal = "Publications of the Astronomical Society of Japan",

issn = "0004-6264",

publisher = "Oxford University Press",

number = "3",

}

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. https://doi.org/10.1093/pasj/62.3.779

TY - JOUR

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

UR - http://www.scopus.com/inward/record.url?scp=77954768027&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77954768027&partnerID=8YFLogxK

U2 - 10.1093/pasj/62.3.779

DO - 10.1093/pasj/62.3.779

M3 - Article

AN - SCOPUS:77954768027

SN - 0004-6264

VL - 62

SP - 779

EP - 786

JO - Publications of the Astronomical Society of Japan

JF - Publications of the Astronomical Society of Japan

IS - 3

ER -

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

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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