SCExAO/CHARIS High-contrast Imaging of Spirals and Darkening Features in the HD 34700 A Protoplanetary Disk

Taichi Uyama; Thayne Currie; Valentin Christiaens; Jaehan Bae; Takayuki Muto; Sanemichi Z. Takahashi; Ryo Tazaki; Marie Ygouf; Jeremy N. Kasdin; Tyler Groff; Timothy D. Brandt; Jeffrey Chilcote; Masahiko Hayashi; Michael W. McElwain; Olivier Guyon; Julien Lozi; Nemanja Jovanovic; Frantz Martinache; Tomoyuki Kudo; Motohide Tamura; Eiji Akiyama; Charles A. Beichman; Carol A. Grady; Gillian R. Knapp; Jungmi Kwon; Michael Sitko; Michihiro Takami; Kevin R. Wagner; John P. Wisniewski; Yi Yang

doi:10.3847/1538-4357/aba8f6

SCExAO/CHARIS High-contrast Imaging of Spirals and Darkening Features in the HD 34700 A Protoplanetary Disk

Taichi Uyama, Thayne Currie, Valentin Christiaens, Jaehan Bae, Takayuki Muto, Sanemichi Z. Takahashi, Ryo Tazaki, Marie Ygouf, Jeremy N. Kasdin, Tyler Groff, Timothy D. Brandt, Jeffrey Chilcote, Masahiko Hayashi, Michael W. McElwain, Olivier Guyon, Julien Lozi, Nemanja Jovanovic, Frantz Martinache, Tomoyuki Kudo, Motohide TamuraEiji Akiyama, Charles A. Beichman, Carol A. Grady, Gillian R. Knapp, Jungmi Kwon, Michael Sitko, Michihiro Takami, Kevin R. Wagner, John P. Wisniewski, Yi Yang

Optical Sciences

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

23 Scopus citations

Abstract

We present Subaru/SCExAO+Coronagraphic High Angular Resolution Imaging Spectrograph (CHARIS) broadband (JHK-band) integral field spectroscopy of HD 34700 A. CHARIS data recover HD 34700 A's disk ring and confirm multiple spirals discovered by Monnier et al. We set limits on substellar companions of ∼12 M Jup at 0.″3 (in the ring gap) and ∼5 M Jup at 0.″75 (outside the ring). The data reveal darkening effects on the ring and spiral, although we do not identify the origin of each feature such as shadows or physical features related to the outer spirals. Geometric albedos converted from the surface brightness suggest a greater scale height and/or prominently abundant submicron dust at position angles between ∼45° and 90°. Spiral fitting resulted in very large pitch angles (∼30°-50°); a stellar flyby of HD 34700 B or infall from a possible envelope is perhaps a reasonable scenario to explain the large pitch angles.

Original language	English (US)
Article number	135
Journal	Astrophysical Journal
Volume	900
Issue number	2
DOIs	https://doi.org/10.3847/1538-4357/aba8f6
State	Published - Sep 10 2020

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.3847/1538-4357/aba8f6

Cite this

Uyama, T., Currie, T., Christiaens, V., Bae, J., Muto, T., Takahashi, S. Z., Tazaki, R., Ygouf, M., Kasdin, J. N., Groff, T., Brandt, T. D., Chilcote, J., Hayashi, M., McElwain, M. W., Guyon, O., Lozi, J., Jovanovic, N., Martinache, F., Kudo, T., ... Yang, Y. (2020). SCExAO/CHARIS High-contrast Imaging of Spirals and Darkening Features in the HD 34700 A Protoplanetary Disk. Astrophysical Journal, 900(2), Article 135. https://doi.org/10.3847/1538-4357/aba8f6

Uyama, T, Currie, T, Christiaens, V, Bae, J, Muto, T, Takahashi, SZ, Tazaki, R, Ygouf, M, Kasdin, JN, Groff, T, Brandt, TD, Chilcote, J, Hayashi, M, McElwain, MW, Guyon, O, Lozi, J, Jovanovic, N, Martinache, F, Kudo, T, Tamura, M, Akiyama, E, Beichman, CA, Grady, CA, Knapp, GR, Kwon, J, Sitko, M, Takami, M, Wagner, KR, Wisniewski, JP & Yang, Y 2020, 'SCExAO/CHARIS High-contrast Imaging of Spirals and Darkening Features in the HD 34700 A Protoplanetary Disk', Astrophysical Journal, vol. 900, no. 2, 135. https://doi.org/10.3847/1538-4357/aba8f6

@article{a6a93f7258e24209a80cee70c4bb0e89,

title = "SCExAO/CHARIS High-contrast Imaging of Spirals and Darkening Features in the HD 34700 A Protoplanetary Disk",

abstract = "We present Subaru/SCExAO+Coronagraphic High Angular Resolution Imaging Spectrograph (CHARIS) broadband (JHK-band) integral field spectroscopy of HD 34700 A. CHARIS data recover HD 34700 A's disk ring and confirm multiple spirals discovered by Monnier et al. We set limits on substellar companions of ∼12 M Jup at 0.″3 (in the ring gap) and ∼5 M Jup at 0.″75 (outside the ring). The data reveal darkening effects on the ring and spiral, although we do not identify the origin of each feature such as shadows or physical features related to the outer spirals. Geometric albedos converted from the surface brightness suggest a greater scale height and/or prominently abundant submicron dust at position angles between ∼45° and 90°. Spiral fitting resulted in very large pitch angles (∼30°-50°); a stellar flyby of HD 34700 B or infall from a possible envelope is perhaps a reasonable scenario to explain the large pitch angles.",

author = "Taichi Uyama and Thayne Currie and Valentin Christiaens and Jaehan Bae and Takayuki Muto and Takahashi, {Sanemichi Z.} and Ryo Tazaki and Marie Ygouf and Kasdin, {Jeremy N.} and Tyler Groff and Brandt, {Timothy D.} and Jeffrey Chilcote and Masahiko Hayashi and McElwain, {Michael W.} and Olivier Guyon and Julien Lozi and Nemanja Jovanovic and Frantz Martinache and Tomoyuki Kudo and Motohide Tamura and Eiji Akiyama and Beichman, {Charles A.} and Grady, {Carol A.} and Knapp, {Gillian R.} and Jungmi Kwon and Michael Sitko and Michihiro Takami and Wagner, {Kevin R.} and Wisniewski, {John P.} and Yi Yang",

year = "2020",

month = sep,

day = "10",

doi = "10.3847/1538-4357/aba8f6",

language = "English (US)",

volume = "900",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing Ltd.",

number = "2",

}

TY - JOUR

T1 - SCExAO/CHARIS High-contrast Imaging of Spirals and Darkening Features in the HD 34700 A Protoplanetary Disk

AU - Uyama, Taichi

AU - Currie, Thayne

AU - Christiaens, Valentin

AU - Bae, Jaehan

AU - Muto, Takayuki

AU - Takahashi, Sanemichi Z.

AU - Tazaki, Ryo

AU - Ygouf, Marie

AU - Kasdin, Jeremy N.

AU - Groff, Tyler

AU - Brandt, Timothy D.

AU - Chilcote, Jeffrey

AU - Hayashi, Masahiko

AU - McElwain, Michael W.

AU - Guyon, Olivier

AU - Lozi, Julien

AU - Jovanovic, Nemanja

AU - Martinache, Frantz

AU - Kudo, Tomoyuki

AU - Tamura, Motohide

AU - Akiyama, Eiji

AU - Beichman, Charles A.

AU - Grady, Carol A.

AU - Knapp, Gillian R.

AU - Kwon, Jungmi

AU - Sitko, Michael

AU - Takami, Michihiro

AU - Wagner, Kevin R.

AU - Wisniewski, John P.

AU - Yang, Yi

PY - 2020/9/10

Y1 - 2020/9/10

N2 - We present Subaru/SCExAO+Coronagraphic High Angular Resolution Imaging Spectrograph (CHARIS) broadband (JHK-band) integral field spectroscopy of HD 34700 A. CHARIS data recover HD 34700 A's disk ring and confirm multiple spirals discovered by Monnier et al. We set limits on substellar companions of ∼12 M Jup at 0.″3 (in the ring gap) and ∼5 M Jup at 0.″75 (outside the ring). The data reveal darkening effects on the ring and spiral, although we do not identify the origin of each feature such as shadows or physical features related to the outer spirals. Geometric albedos converted from the surface brightness suggest a greater scale height and/or prominently abundant submicron dust at position angles between ∼45° and 90°. Spiral fitting resulted in very large pitch angles (∼30°-50°); a stellar flyby of HD 34700 B or infall from a possible envelope is perhaps a reasonable scenario to explain the large pitch angles.

AB - We present Subaru/SCExAO+Coronagraphic High Angular Resolution Imaging Spectrograph (CHARIS) broadband (JHK-band) integral field spectroscopy of HD 34700 A. CHARIS data recover HD 34700 A's disk ring and confirm multiple spirals discovered by Monnier et al. We set limits on substellar companions of ∼12 M Jup at 0.″3 (in the ring gap) and ∼5 M Jup at 0.″75 (outside the ring). The data reveal darkening effects on the ring and spiral, although we do not identify the origin of each feature such as shadows or physical features related to the outer spirals. Geometric albedos converted from the surface brightness suggest a greater scale height and/or prominently abundant submicron dust at position angles between ∼45° and 90°. Spiral fitting resulted in very large pitch angles (∼30°-50°); a stellar flyby of HD 34700 B or infall from a possible envelope is perhaps a reasonable scenario to explain the large pitch angles.

UR - http://www.scopus.com/inward/record.url?scp=85091017814&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85091017814&partnerID=8YFLogxK

U2 - 10.3847/1538-4357/aba8f6

DO - 10.3847/1538-4357/aba8f6

M3 - Article

AN - SCOPUS:85091017814

SN - 0004-637X

VL - 900

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

M1 - 135

ER -

SCExAO/CHARIS High-contrast Imaging of Spirals and Darkening Features in the HD 34700 A Protoplanetary Disk

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this