Near-infrared imaging polarimetry of LkCa 15: A possible warped inner disk

Daehyeon Oh; Jun Hashimoto; Motohide Tamura; John Wisniewski; Eiji Akiyama; Thayne Currie; Satoshi Mayama; Michihiro Takami; Christian Thalmann; Tomoyuki Kudo; Nobuhiko Kusakabe; Lyu Abe; Wolfgang Brandner; Timothy D. Brandt; Joseph C. Carson; Sebastian Egner; 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; Masayuki Kuzuhara; Jungmi Kwon; Taro Matsuo; Michael W. McElwain; Shoken Miyama; Jun Ichi Morino; Amaya Moro-Martin; Tetsuo Nishimura; Tae Soo Pyo; Eugene Serabyn; Takuya Suenaga; Hiroshi Suto; Ryuji Suzuki; Yasuhiro H. Takahashi; Naruhisa Takato; Hiroshi Terada; Edwin L. Turner; Makoto Watanabe; Toru Yamada; Hideki Takami; Tomonori Usuda

doi:10.1093/pasj/psv133

Near-infrared imaging polarimetry of LkCa 15: A possible warped inner disk

Daehyeon Oh, Jun Hashimoto, Motohide Tamura, John Wisniewski, Eiji Akiyama, Thayne Currie, Satoshi Mayama, Michihiro Takami, Christian Thalmann, Tomoyuki Kudo, Nobuhiko Kusakabe, Lyu Abe, Wolfgang Brandner, Timothy D. Brandt, Joseph C. Carson, Sebastian Egner, Markus Feldt, Miwa Goto, Carol A. Grady, Olivier GuyonYutaka Hayano, Masahiko Hayashi, Saeko S. Hayashi, Thomas Henning, Klaus W. Hodapp, Miki Ishii, Masanori Iye, Markus Janson, Ryo Kandori, Gillian R. Knapp, Masayuki Kuzuhara, Jungmi Kwon, Taro Matsuo, Michael W. McElwain, Shoken Miyama, Jun Ichi Morino, Amaya Moro-Martin, Tetsuo Nishimura, Tae Soo Pyo, Eugene Serabyn, Takuya Suenaga, Hiroshi Suto, Ryuji Suzuki, Yasuhiro H. Takahashi, Naruhisa Takato, Hiroshi Terada, Edwin L. Turner, Makoto Watanabe, Toru Yamada, Hideki Takami, Tomonori Usuda

Astrophysical Sciences

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Abstract

We present high-contrast H-band polarized intensity images of the transitional disk around the young solar-like star LkCa 15. By utilizing Subaru/HiCIAO for polarimetric differential imaging, the angular resolution and the inner working angle reach 0.″07 and r = 0.″1, respectively. We obtained a clearly resolved gap (width ≤ 27 au) at ∼48 au from the central star. This gap is consistent with images reported in previous studies. We also confirmed the existence of a bright inner disk with a misaligned position angle of 13° ±4° with respect to that of the outer disk, i.e., the inner disk is possibly warped. The large gap and the warped inner disk both point to the existence of a multiple planetary system with a mass of ≤ 1M_Jup.

Original language	English (US)
Journal	Publications of the Astronomical Society of Japan
Volume	68
Issue number	2
DOIs	https://doi.org/10.1093/pasj/psv133
State	Published - Apr 4 2016

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

circumstellar matter
protoplanetary disks
stars: individual (LkCa 15)
stars: pre-main-sequence

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10.1093/pasj/psv133

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Oh, D., Hashimoto, J., Tamura, M., Wisniewski, J., Akiyama, E., Currie, T., Mayama, S., Takami, M., Thalmann, C., Kudo, T., Kusakabe, N., Abe, L., Brandner, W., Brandt, T. D., Carson, J. C., Egner, S., Feldt, M., Goto, M., Grady, C. A., ... Usuda, T. (2016). Near-infrared imaging polarimetry of LkCa 15: A possible warped inner disk. Publications of the Astronomical Society of Japan, 68(2). https://doi.org/10.1093/pasj/psv133

@article{888500e6be42486692b10f455bfb366b,

title = "Near-infrared imaging polarimetry of LkCa 15: A possible warped inner disk",

abstract = "We present high-contrast H-band polarized intensity images of the transitional disk around the young solar-like star LkCa 15. By utilizing Subaru/HiCIAO for polarimetric differential imaging, the angular resolution and the inner working angle reach 0.″07 and r = 0.″1, respectively. We obtained a clearly resolved gap (width ≤ 27 au) at ∼48 au from the central star. This gap is consistent with images reported in previous studies. We also confirmed the existence of a bright inner disk with a misaligned position angle of 13° ±4° with respect to that of the outer disk, i.e., the inner disk is possibly warped. The large gap and the warped inner disk both point to the existence of a multiple planetary system with a mass of ≤ 1MJup.",

keywords = "circumstellar matter, protoplanetary disks, stars: individual (LkCa 15), stars: pre-main-sequence",

author = "Daehyeon Oh and Jun Hashimoto and Motohide Tamura and John Wisniewski and Eiji Akiyama and Thayne Currie and Satoshi Mayama and Michihiro Takami and Christian Thalmann and Tomoyuki Kudo and Nobuhiko Kusakabe and Lyu Abe and Wolfgang Brandner and Brandt, {Timothy D.} and Carson, {Joseph C.} and Sebastian Egner 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 Masayuki Kuzuhara and Jungmi Kwon and Taro Matsuo and McElwain, {Michael W.} and Shoken Miyama and Morino, {Jun Ichi} and Amaya Moro-Martin and Tetsuo Nishimura and Pyo, {Tae Soo} and Eugene Serabyn and Takuya Suenaga and Hiroshi Suto and Ryuji Suzuki and Takahashi, {Yasuhiro H.} and Naruhisa Takato and Hiroshi Terada and Turner, {Edwin L.} and Makoto Watanabe and Toru Yamada and Hideki Takami and Tomonori Usuda",

note = "Publisher Copyright: {\textcopyright} 2016 The Author.",

year = "2016",

month = apr,

day = "4",

doi = "10.1093/pasj/psv133",

language = "English (US)",

volume = "68",

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

issn = "0004-6264",

publisher = "Oxford University Press",

number = "2",

}

Oh, D, Hashimoto, J, Tamura, M, Wisniewski, J, Akiyama, E, Currie, T, Mayama, S, Takami, M, Thalmann, C, Kudo, T, Kusakabe, N, Abe, L, Brandner, W, Brandt, TD, Carson, JC, Egner, S, 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, Kuzuhara, M, Kwon, J, Matsuo, T, McElwain, MW, Miyama, S, Morino, JI, Moro-Martin, A, Nishimura, T, Pyo, TS, Serabyn, E, Suenaga, T, Suto, H, Suzuki, R, Takahashi, YH, Takato, N, Terada, H, Turner, EL, Watanabe, M, Yamada, T, Takami, H & Usuda, T 2016, 'Near-infrared imaging polarimetry of LkCa 15: A possible warped inner disk', Publications of the Astronomical Society of Japan, vol. 68, no. 2. https://doi.org/10.1093/pasj/psv133

TY - JOUR

T1 - Near-infrared imaging polarimetry of LkCa 15

T2 - A possible warped inner disk

AU - Oh, Daehyeon

AU - Hashimoto, Jun

AU - Tamura, Motohide

AU - Wisniewski, John

AU - Akiyama, Eiji

AU - Currie, Thayne

AU - Mayama, Satoshi

AU - Takami, Michihiro

AU - Thalmann, Christian

AU - Kudo, Tomoyuki

AU - Kusakabe, Nobuhiko

AU - Abe, Lyu

AU - Brandner, Wolfgang

AU - Brandt, Timothy D.

AU - Carson, Joseph C.

AU - Egner, Sebastian

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 - Kuzuhara, Masayuki

AU - Kwon, Jungmi

AU - Matsuo, Taro

AU - McElwain, Michael W.

AU - Miyama, Shoken

AU - Morino, Jun Ichi

AU - Moro-Martin, Amaya

AU - Nishimura, Tetsuo

AU - Pyo, Tae Soo

AU - Serabyn, Eugene

AU - Suenaga, Takuya

AU - Suto, Hiroshi

AU - Suzuki, Ryuji

AU - Takahashi, Yasuhiro H.

AU - Takato, Naruhisa

AU - Terada, Hiroshi

AU - Turner, Edwin L.

AU - Watanabe, Makoto

AU - Yamada, Toru

AU - Takami, Hideki

AU - Usuda, Tomonori

PY - 2016/4/4

Y1 - 2016/4/4

N2 - We present high-contrast H-band polarized intensity images of the transitional disk around the young solar-like star LkCa 15. By utilizing Subaru/HiCIAO for polarimetric differential imaging, the angular resolution and the inner working angle reach 0.″07 and r = 0.″1, respectively. We obtained a clearly resolved gap (width ≤ 27 au) at ∼48 au from the central star. This gap is consistent with images reported in previous studies. We also confirmed the existence of a bright inner disk with a misaligned position angle of 13° ±4° with respect to that of the outer disk, i.e., the inner disk is possibly warped. The large gap and the warped inner disk both point to the existence of a multiple planetary system with a mass of ≤ 1MJup.

AB - We present high-contrast H-band polarized intensity images of the transitional disk around the young solar-like star LkCa 15. By utilizing Subaru/HiCIAO for polarimetric differential imaging, the angular resolution and the inner working angle reach 0.″07 and r = 0.″1, respectively. We obtained a clearly resolved gap (width ≤ 27 au) at ∼48 au from the central star. This gap is consistent with images reported in previous studies. We also confirmed the existence of a bright inner disk with a misaligned position angle of 13° ±4° with respect to that of the outer disk, i.e., the inner disk is possibly warped. The large gap and the warped inner disk both point to the existence of a multiple planetary system with a mass of ≤ 1MJup.

KW - circumstellar matter

KW - protoplanetary disks

KW - stars: individual (LkCa 15)

KW - stars: pre-main-sequence

UR - http://www.scopus.com/inward/record.url?scp=84965118354&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84965118354&partnerID=8YFLogxK

U2 - 10.1093/pasj/psv133

DO - 10.1093/pasj/psv133

M3 - Article

C2 - 32848256

AN - SCOPUS:84965118354

SN - 0004-6264

VL - 68

JO - Publications of the Astronomical Society of Japan

JF - Publications of the Astronomical Society of Japan

IS - 2

ER -

Near-infrared imaging polarimetry of LkCa 15: A possible warped inner disk

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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