A substellar companion to Pleiades HII 3441

Mihoko Konishi; Taro Matsuo; Kodai Yamamoto; Matthias Samland; Jun Sudo; Hiroshi Shibai; Yoichi Itoh; Misato Fukagawa; Takahiro Sumi; Tomoyuki Kudo; Jun Hashimoto; Masayuki Kuzuhara; Nobuhiko Kusakabe; Lyu Abe; Eiji Akiyama; Wolfgang Brandner; Timothy D. Brandt; Joseph C. Carson; Markus Feldt; Miwa Goto; Carol A. Grady; Olivier Guyon; Yutaka Hayano; Masahiko Hayashi; Saeko S. Hayashi; Thomas Henning; Klaus W. Hodapp; Miki Ishii; Masanori Iye; Markus Janson; Ryo Kandori; Gillian R. Knapp; Jungmi Kwon; Michael W. McElwain; Kyle Mede; Shoken Miyama; Jun Ichi Morino; Amaya Moro-Martín; Tetsuo Nishimura; Daehyeon Oh; Tae Soo Pyo; Eugene Serabyn; Joshua E. Schlieder; Takuya Suenaga; Hiroshi Suto; Ryuji Suzuki; Yasuhiro H. Takahashi; Michihiro Takami; Naruhisa Takato; Hiroshi Terada; Christian Thalmann; Edwin L. Turner; Makoto Watanabe; John P. Wisniewski; Toru Yamada; Hideki Takami; Tomonori Usuda; Motohide Tamura

doi:10.1093/pasj/psw083

A substellar companion to Pleiades HII 3441

Mihoko Konishi, Taro Matsuo, Kodai Yamamoto, Matthias Samland, Jun Sudo, Hiroshi Shibai, Yoichi Itoh, Misato Fukagawa, Takahiro Sumi, Tomoyuki Kudo, Jun Hashimoto, Masayuki Kuzuhara, Nobuhiko Kusakabe, Lyu Abe, Eiji Akiyama, Wolfgang Brandner, Timothy D. Brandt, Joseph C. Carson, Markus Feldt, Miwa GotoCarol A. Grady, Olivier Guyon, Yutaka Hayano, Masahiko Hayashi, Saeko S. Hayashi, Thomas Henning, Klaus W. Hodapp, Miki Ishii, Masanori Iye, Markus Janson, Ryo Kandori, Gillian R. Knapp, Jungmi Kwon, Michael W. McElwain, Kyle Mede, Shoken Miyama, Jun Ichi Morino, Amaya Moro-Martín, Tetsuo Nishimura, Daehyeon Oh, Tae Soo Pyo, Eugene Serabyn, Joshua E. Schlieder, Takuya Suenaga, Hiroshi Suto, Ryuji Suzuki, Yasuhiro H. Takahashi, Michihiro Takami, Naruhisa Takato, Hiroshi Terada, Christian Thalmann, Edwin L. Turner, Makoto Watanabe, John P. Wisniewski, Toru Yamada, Hideki Takami, Tomonori Usuda, Motohide Tamura

Optical Sciences

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3 Scopus citations

Abstract

We find a new substellar companion to the Pleiades member star, Pleiades HII 3441, using the Subaru telescope with adaptive optics. The discovery is made as part of the high-contrast imaging survey to search for planetary-mass and substellar companions in the Pleiades and young moving groups. The companion has a projected separation of 0. ′49±0. ′02 (66±2 au) and a mass of 68±5M_J based on three observations in the J-, H-, and K_s-bands. The spectral type is estimated to be M7 (∼2700 K), and thus no methane absorption is detected in the H band. Our Pleiades observations result in the detection of two substellar companions including one previously reported among 20 observed Pleiades stars, and indicate that the fraction of substellar companions in the Pleiades is about 10.0_-8.8^+26.1 %. This is consistent with multiplicity studies of both the Pleiades stars and other open clusters.

Original language	English (US)
Article number	92
Journal	Publications of the Astronomical Society of Japan
Volume	68
Issue number	6
DOIs	https://doi.org/10.1093/pasj/psw083
State	Published - Dec 1 2016

Keywords

Brown dwarfs
Stars: imaging
Stars: individual (Pleiades HII 3441)
Stars: low-mass

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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Konishi, M., Matsuo, T., Yamamoto, K., Samland, M., Sudo, J., Shibai, H., Itoh, Y., Fukagawa, M., Sumi, T., Kudo, T., Hashimoto, J., Kuzuhara, M., Kusakabe, N., Abe, L., Akiyama, E., Brandner, W., Brandt, T. D., Carson, J. C., Feldt, M., ... Tamura, M. (2016). A substellar companion to Pleiades HII 3441. Publications of the Astronomical Society of Japan, 68(6), Article 92. https://doi.org/10.1093/pasj/psw083

Konishi, M, Matsuo, T, Yamamoto, K, Samland, M, Sudo, J, Shibai, H, Itoh, Y, Fukagawa, M, Sumi, T, Kudo, T, Hashimoto, J, Kuzuhara, M, Kusakabe, N, Abe, L, Akiyama, E, Brandner, W, Brandt, TD, Carson, JC, Feldt, M, Goto, M, Grady, CA, Guyon, O, Hayano, Y, Hayashi, M, Hayashi, SS, Henning, T, Hodapp, KW, Ishii, M, Iye, M, Janson, M, Kandori, R, Knapp, GR, Kwon, J, McElwain, MW, Mede, K, Miyama, S, Morino, JI, Moro-Martín, A, Nishimura, T, Oh, D, Pyo, TS, Serabyn, E, Schlieder, JE, Suenaga, T, Suto, H, Suzuki, R, Takahashi, YH, Takami, M, Takato, N, Terada, H, Thalmann, C, Turner, EL, Watanabe, M, Wisniewski, JP, Yamada, T, Takami, H, Usuda, T & Tamura, M 2016, 'A substellar companion to Pleiades HII 3441', Publications of the Astronomical Society of Japan, vol. 68, no. 6, 92. https://doi.org/10.1093/pasj/psw083

@article{3452721c512a4ce19e9c89253f16206b,

title = "A substellar companion to Pleiades HII 3441",

abstract = "We find a new substellar companion to the Pleiades member star, Pleiades HII 3441, using the Subaru telescope with adaptive optics. The discovery is made as part of the high-contrast imaging survey to search for planetary-mass and substellar companions in the Pleiades and young moving groups. The companion has a projected separation of 0. ′49±0. ′02 (66±2 au) and a mass of 68±5MJ based on three observations in the J-, H-, and Ks-bands. The spectral type is estimated to be M7 (∼2700 K), and thus no methane absorption is detected in the H band. Our Pleiades observations result in the detection of two substellar companions including one previously reported among 20 observed Pleiades stars, and indicate that the fraction of substellar companions in the Pleiades is about 10.0-8.8+26.1 %. This is consistent with multiplicity studies of both the Pleiades stars and other open clusters.",

keywords = "Brown dwarfs, Stars: imaging, Stars: individual (Pleiades HII 3441), Stars: low-mass",

author = "Mihoko Konishi and Taro Matsuo and Kodai Yamamoto and Matthias Samland and Jun Sudo and Hiroshi Shibai and Yoichi Itoh and Misato Fukagawa and Takahiro Sumi and Tomoyuki Kudo and Jun Hashimoto and Masayuki Kuzuhara and Nobuhiko Kusakabe and Lyu Abe and Eiji Akiyama and Wolfgang Brandner and Brandt, {Timothy D.} and Carson, {Joseph C.} and Markus Feldt and Miwa Goto and Grady, {Carol A.} and Olivier Guyon and Yutaka Hayano and Masahiko Hayashi and Hayashi, {Saeko S.} and Thomas Henning and Hodapp, {Klaus W.} and Miki Ishii and Masanori Iye and Markus Janson and Ryo Kandori and Knapp, {Gillian R.} and Jungmi Kwon and McElwain, {Michael W.} and Kyle Mede and Shoken Miyama and Morino, {Jun Ichi} and Amaya Moro-Mart{\'i}n and Tetsuo Nishimura and Daehyeon Oh and Pyo, {Tae Soo} and Eugene Serabyn and Schlieder, {Joshua E.} and Takuya Suenaga and Hiroshi Suto and Ryuji Suzuki and Takahashi, {Yasuhiro H.} and Michihiro Takami and Naruhisa Takato and Hiroshi Terada and Christian Thalmann and Turner, {Edwin L.} and Makoto Watanabe and Wisniewski, {John P.} and Toru Yamada and Hideki Takami and Tomonori Usuda and Motohide Tamura",

year = "2016",

month = dec,

day = "1",

doi = "10.1093/pasj/psw083",

language = "English (US)",

volume = "68",

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

issn = "0004-6264",

publisher = "Astronomical Society of Japan",

number = "6",

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TY - JOUR

T1 - A substellar companion to Pleiades HII 3441

AU - Konishi, Mihoko

AU - Matsuo, Taro

AU - Yamamoto, Kodai

AU - Samland, Matthias

AU - Sudo, Jun

AU - Shibai, Hiroshi

AU - Itoh, Yoichi

AU - Fukagawa, Misato

AU - Sumi, Takahiro

AU - Kudo, Tomoyuki

AU - Hashimoto, Jun

AU - Kuzuhara, Masayuki

AU - Kusakabe, Nobuhiko

AU - Abe, Lyu

AU - Akiyama, Eiji

AU - Brandner, Wolfgang

AU - Brandt, Timothy D.

AU - Carson, Joseph C.

AU - Feldt, Markus

AU - Goto, Miwa

AU - Grady, Carol A.

AU - Guyon, Olivier

AU - Hayano, Yutaka

AU - Hayashi, Masahiko

AU - Hayashi, Saeko S.

AU - Henning, Thomas

AU - Hodapp, Klaus W.

AU - Ishii, Miki

AU - Iye, Masanori

AU - Janson, Markus

AU - Kandori, Ryo

AU - Knapp, Gillian R.

AU - Kwon, Jungmi

AU - McElwain, Michael W.

AU - Mede, Kyle

AU - Miyama, Shoken

AU - Morino, Jun Ichi

AU - Moro-Martín, Amaya

AU - Nishimura, Tetsuo

AU - Oh, Daehyeon

AU - Pyo, Tae Soo

AU - Serabyn, Eugene

AU - Schlieder, Joshua E.

AU - Suenaga, Takuya

AU - Suto, Hiroshi

AU - Suzuki, Ryuji

AU - Takahashi, Yasuhiro H.

AU - Takami, Michihiro

AU - Takato, Naruhisa

AU - Terada, Hiroshi

AU - Thalmann, Christian

AU - Turner, Edwin L.

AU - Watanabe, Makoto

AU - Wisniewski, John P.

AU - Yamada, Toru

AU - Takami, Hideki

AU - Usuda, Tomonori

AU - Tamura, Motohide

PY - 2016/12/1

Y1 - 2016/12/1

N2 - We find a new substellar companion to the Pleiades member star, Pleiades HII 3441, using the Subaru telescope with adaptive optics. The discovery is made as part of the high-contrast imaging survey to search for planetary-mass and substellar companions in the Pleiades and young moving groups. The companion has a projected separation of 0. ′49±0. ′02 (66±2 au) and a mass of 68±5MJ based on three observations in the J-, H-, and Ks-bands. The spectral type is estimated to be M7 (∼2700 K), and thus no methane absorption is detected in the H band. Our Pleiades observations result in the detection of two substellar companions including one previously reported among 20 observed Pleiades stars, and indicate that the fraction of substellar companions in the Pleiades is about 10.0-8.8+26.1 %. This is consistent with multiplicity studies of both the Pleiades stars and other open clusters.

AB - We find a new substellar companion to the Pleiades member star, Pleiades HII 3441, using the Subaru telescope with adaptive optics. The discovery is made as part of the high-contrast imaging survey to search for planetary-mass and substellar companions in the Pleiades and young moving groups. The companion has a projected separation of 0. ′49±0. ′02 (66±2 au) and a mass of 68±5MJ based on three observations in the J-, H-, and Ks-bands. The spectral type is estimated to be M7 (∼2700 K), and thus no methane absorption is detected in the H band. Our Pleiades observations result in the detection of two substellar companions including one previously reported among 20 observed Pleiades stars, and indicate that the fraction of substellar companions in the Pleiades is about 10.0-8.8+26.1 %. This is consistent with multiplicity studies of both the Pleiades stars and other open clusters.

KW - Brown dwarfs

KW - Stars: imaging

KW - Stars: individual (Pleiades HII 3441)

KW - Stars: low-mass

UR - http://www.scopus.com/inward/record.url?scp=85042147585&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85042147585&partnerID=8YFLogxK

U2 - 10.1093/pasj/psw083

DO - 10.1093/pasj/psw083

M3 - Article

AN - SCOPUS:85042147585

SN - 0004-6264

VL - 68

JO - Publications of the Astronomical Society of Japan

JF - Publications of the Astronomical Society of Japan

IS - 6

M1 - 92

ER -

A substellar companion to Pleiades HII 3441

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