High-contrast near-infrared imaging polarimetry of the protoplanetary disk around RY Tau

Michihiro Takami, Jennifer L. Karr, Jun Hashimoto, Hyosun Kim, John Wisniewski, Thomas Henning, Carol A. Grady, Ryo Kandori, Klaus W. Hodapp, Tomoyuki Kudo, Nobuhiko Kusakabe, Mei Yin Chou, Yoichi Itoh, Munetake Momose, Satoshi Mayama, Thayne Currie, Katherine B. Follette, Jungmi Kwon, Lyu Abe, Wolfgang Brandner & 33 others Timothy D. Brandt, Joseph Carson, Sebastian E. Egner, Markus Feldt, Olivier Guyon, Yutaka Hayano, Masahiko Hayashi, Saeko Hayashi, Miki Ishii, Masanori Iye, Markus Janson, Gillian R. Knapp, Masayuki Kuzuhara, Michael W. McElwain, Taro Matsuo, Shoken Miyama, Jun Ichi Morino, Amaya Moro-Martin, Tetsuo Nishimura, Tae Soo Pyo, Eugene Serabyn, Hiroshi Suto, Ryuji Suzuki, Naruhisa Takato, Hiroshi Terada, Christian Thalmann, 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 near-infrared coronagraphic imaging polarimetry of RY Tau. The scattered light in the circumstellar environment was imaged at the H band at a high resolution (∼0.″05) for the first time, using Subaru/HiCIAO. The observed polarized intensity (PI) distribution shows a butterfly-like distribution of bright emission with an angular scale similar to the disk observed at millimeter wavelengths. This distribution is offset toward the blueshifted jet, indicating the presence of a geometrically thick disk or a remnant envelope, and therefore the earliest stage of the Class II evolutionary phase. We perform comparisons between the observed PI distribution and disk models with (1) full radiative transfer code, using the spectral energy distribution (SED) to constrain the disk parameters; and (2) monochromatic simulations of scattered light which explore a wide range of parameters space to constrain the disk and dust parameters. We show that these models cannot consistently explain the observed PI distribution, SED, and the viewing angle inferred by millimeter interferometry. We suggest that the scattered light in the near-infrared is associated with an optically thin and geometrically thick layer above the disk surface, with the surface responsible for the infrared SED. Half of the scattered light and thermal radiation in this layer illuminates the disk surface, and this process may significantly affect the thermal structure of the disk.

Original languageEnglish (US)
Article number145
JournalAstrophysical Journal
Volume772
Issue number2
DOIs
StatePublished - Aug 1 2013
Externally publishedYes

Fingerprint

protoplanetary disks
polarimetry
near infrared
spectral energy distribution
energy
distribution
thermal radiation
thermal structure
interferometry
butterfly
radiative transfer
envelopes
dust
wavelength
high resolution
radiation
wavelengths

Keywords

  • polarization
  • protoplanetary disks
  • stars: individual (RY Tau)
  • stars: pre-main sequence

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Takami, M., Karr, J. L., Hashimoto, J., Kim, H., Wisniewski, J., Henning, T., ... Tamura, M. (2013). High-contrast near-infrared imaging polarimetry of the protoplanetary disk around RY Tau. Astrophysical Journal, 772(2), [145]. https://doi.org/10.1088/0004-637X/772/2/145

High-contrast near-infrared imaging polarimetry of the protoplanetary disk around RY Tau. / Takami, Michihiro; Karr, Jennifer L.; Hashimoto, Jun; Kim, Hyosun; Wisniewski, John; Henning, Thomas; Grady, Carol A.; Kandori, Ryo; Hodapp, Klaus W.; Kudo, Tomoyuki; Kusakabe, Nobuhiko; Chou, Mei Yin; Itoh, Yoichi; Momose, Munetake; Mayama, Satoshi; Currie, Thayne; Follette, Katherine B.; Kwon, Jungmi; Abe, Lyu; Brandner, Wolfgang; Brandt, Timothy D.; Carson, Joseph; Egner, Sebastian E.; Feldt, Markus; Guyon, Olivier; Hayano, Yutaka; Hayashi, Masahiko; Hayashi, Saeko; Ishii, Miki; Iye, Masanori; Janson, Markus; Knapp, Gillian R.; Kuzuhara, Masayuki; McElwain, Michael W.; Matsuo, Taro; Miyama, Shoken; Morino, Jun Ichi; Moro-Martin, Amaya; Nishimura, Tetsuo; Pyo, Tae Soo; Serabyn, Eugene; Suto, Hiroshi; Suzuki, Ryuji; Takato, Naruhisa; Terada, Hiroshi; Thalmann, Christian; Tomono, Daigo; Turner, Edwin L.; Watanabe, Makoto; Yamada, Toru; Takami, Hideki; Usuda, Tomonori; Tamura, Motohide.

In: Astrophysical Journal, Vol. 772, No. 2, 145, 01.08.2013.

Research output: Contribution to journalArticle

Takami, M, Karr, JL, Hashimoto, J, Kim, H, Wisniewski, J, Henning, T, Grady, CA, Kandori, R, Hodapp, KW, Kudo, T, Kusakabe, N, Chou, MY, Itoh, Y, Momose, M, Mayama, S, Currie, T, Follette, KB, Kwon, J, Abe, L, Brandner, W, Brandt, TD, Carson, J, Egner, SE, Feldt, M, Guyon, O, Hayano, Y, Hayashi, M, Hayashi, S, Ishii, M, Iye, M, Janson, M, Knapp, GR, Kuzuhara, M, McElwain, MW, Matsuo, T, Miyama, S, Morino, JI, Moro-Martin, A, Nishimura, T, Pyo, TS, Serabyn, E, Suto, H, Suzuki, R, Takato, N, Terada, H, Thalmann, C, Tomono, D, Turner, EL, Watanabe, M, Yamada, T, Takami, H, Usuda, T & Tamura, M 2013, 'High-contrast near-infrared imaging polarimetry of the protoplanetary disk around RY Tau', Astrophysical Journal, vol. 772, no. 2, 145. https://doi.org/10.1088/0004-637X/772/2/145
Takami, Michihiro ; Karr, Jennifer L. ; Hashimoto, Jun ; Kim, Hyosun ; Wisniewski, John ; Henning, Thomas ; Grady, Carol A. ; Kandori, Ryo ; Hodapp, Klaus W. ; Kudo, Tomoyuki ; Kusakabe, Nobuhiko ; Chou, Mei Yin ; Itoh, Yoichi ; Momose, Munetake ; Mayama, Satoshi ; Currie, Thayne ; Follette, Katherine B. ; Kwon, Jungmi ; Abe, Lyu ; Brandner, Wolfgang ; Brandt, Timothy D. ; Carson, Joseph ; Egner, Sebastian E. ; Feldt, Markus ; Guyon, Olivier ; Hayano, Yutaka ; Hayashi, Masahiko ; Hayashi, Saeko ; Ishii, Miki ; Iye, Masanori ; Janson, Markus ; Knapp, Gillian R. ; Kuzuhara, Masayuki ; McElwain, Michael W. ; Matsuo, Taro ; Miyama, Shoken ; Morino, Jun Ichi ; Moro-Martin, Amaya ; Nishimura, Tetsuo ; Pyo, Tae Soo ; Serabyn, Eugene ; Suto, Hiroshi ; Suzuki, Ryuji ; Takato, Naruhisa ; Terada, Hiroshi ; Thalmann, Christian ; Tomono, Daigo ; Turner, Edwin L. ; Watanabe, Makoto ; Yamada, Toru ; Takami, Hideki ; Usuda, Tomonori ; Tamura, Motohide. / High-contrast near-infrared imaging polarimetry of the protoplanetary disk around RY Tau. In: Astrophysical Journal. 2013 ; Vol. 772, No. 2.
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AU - Wisniewski, John

AU - Henning, Thomas

AU - Grady, Carol A.

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AU - Momose, Munetake

AU - Mayama, Satoshi

AU - Currie, Thayne

AU - Follette, Katherine B.

AU - Kwon, Jungmi

AU - Abe, Lyu

AU - Brandner, Wolfgang

AU - Brandt, Timothy D.

AU - Carson, Joseph

AU - Egner, Sebastian E.

AU - Feldt, Markus

AU - Guyon, Olivier

AU - Hayano, Yutaka

AU - Hayashi, Masahiko

AU - Hayashi, Saeko

AU - Ishii, Miki

AU - Iye, Masanori

AU - Janson, Markus

AU - Knapp, Gillian R.

AU - Kuzuhara, Masayuki

AU - McElwain, Michael W.

AU - Matsuo, Taro

AU - Miyama, Shoken

AU - Morino, Jun Ichi

AU - Moro-Martin, Amaya

AU - Nishimura, Tetsuo

AU - Pyo, Tae Soo

AU - Serabyn, Eugene

AU - Suto, Hiroshi

AU - Suzuki, Ryuji

AU - Takato, Naruhisa

AU - Terada, Hiroshi

AU - Thalmann, Christian

AU - Tomono, Daigo

AU - Turner, Edwin L.

AU - Watanabe, Makoto

AU - Yamada, Toru

AU - Takami, Hideki

AU - Usuda, Tomonori

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AB - We present near-infrared coronagraphic imaging polarimetry of RY Tau. The scattered light in the circumstellar environment was imaged at the H band at a high resolution (∼0.″05) for the first time, using Subaru/HiCIAO. The observed polarized intensity (PI) distribution shows a butterfly-like distribution of bright emission with an angular scale similar to the disk observed at millimeter wavelengths. This distribution is offset toward the blueshifted jet, indicating the presence of a geometrically thick disk or a remnant envelope, and therefore the earliest stage of the Class II evolutionary phase. We perform comparisons between the observed PI distribution and disk models with (1) full radiative transfer code, using the spectral energy distribution (SED) to constrain the disk parameters; and (2) monochromatic simulations of scattered light which explore a wide range of parameters space to constrain the disk and dust parameters. We show that these models cannot consistently explain the observed PI distribution, SED, and the viewing angle inferred by millimeter interferometry. We suggest that the scattered light in the near-infrared is associated with an optically thin and geometrically thick layer above the disk surface, with the surface responsible for the infrared SED. Half of the scattered light and thermal radiation in this layer illuminates the disk surface, and this process may significantly affect the thermal structure of the disk.

KW - polarization

KW - protoplanetary disks

KW - stars: individual (RY Tau)

KW - stars: pre-main sequence

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