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High-resolution Near-infrared Polarimetry and Submillimeter Imaging of FS Tau A: Possible Streamers in Misaligned Circumbinary Disk System

Yang, Yi and Akiyama, Eiji and Currie, Thayne and Dong, Ruobing and Hashimoto, Jun and Hayashi, Saeko S. and Grady, Carol A. and Janson, Markus and Jovanovic, Nemanja and Uyama, Taichi and Nakagawa, Takao and Kudo, Tomoyuki and Kusakabe, Nobuhiko and Kuzuhara, Masayuki and Abe, Lyu and Brandner, Wolfgang and Brandt, Timothy D. and Bonnefoy, Michael and Carson, Joseph C. and Chilcote, Jeffrey and Rich, Evan A. and Feldt, Markus and Goto, Miwa and Groff, Tyler D. and Guyon, Olivier and Hayano, Yutaka and Hayashi, Masahiko and Henning, Thomas and Hodapp, Klaus W. and Ishii, Miki and Iye, Masanori and Kandori, Ryo and Kasdin, Jeremy and Knapp, Gillian R. and Kwon, Jungmi and Lozi, Julien and Martinache, Frantz and Matsuo, Taro and Mayama, Satoshi and Mcelwain, Michael W. and Miyama, Shoken and Morino, Jun-Ichi and Moro-Martin, Amaya and Nishimura, Tetsuo and Pyo, Tae-Soo and Serabyn, Eugene and Suto, Hiroshi and Suzuki, Ryuji and Takami, Michihiro and Takato, Naruhisa and Terada, Hiroshi and Thalmann, Christian and Turner, Edwin L. and Watanabe, Makoto and Wisniewski, John P. and Yamada, Toru and Takami, Hideki and Usuda, Tomonori and Tamura, Motohide (2020) High-resolution Near-infrared Polarimetry and Submillimeter Imaging of FS Tau A: Possible Streamers in Misaligned Circumbinary Disk System. Astrophysical Journal, 889 (2). Art. No. 140. ISSN 1538-4357.

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We analyzed the young (2.8 Myr-old) binary system FS Tau A using near-infrared (H-band) high-contrast polarimetry data from Subaru/HiCIAO and submillimeter CO (J = 2–1) line emission data from Atacama Large Millimeter/submillimeter Array (ALMA). Both the near-infrared and submillimeter observations reveal several clear structures extending to ~240 au from the stars. Based on these observations at different wavelengths, we report the following discoveries. One arm-like structure detected in the near-infrared band initially extends from the south of the binary with a subsequent turn to the northeast, corresponding to two bar-like structures detected in ALMA observations with an local standard of rest kinematic (LSRK) velocity of 1.19–5.64 km s⁻¹. Another feature detected in the near-infrared band extends initially from the north of the binary, relating to an arm-like structure detected in ALMA observations with an LSRK velocity of 8.17–16.43 km s⁻¹. From their shapes and velocities, we suggest that these structures can mostly be explained by two streamers that connect the outer circumbinary disk and the central binary components. These discoveries will be helpful for understanding the evolution of streamers and circumstellar disks in young binary systems.

Item Type:Article
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URLURL TypeDescription Paper
Yang, Yi0000-0002-9024-4150
Akiyama, Eiji0000-0002-5082-8880
Currie, Thayne0000-0002-7405-3119
Dong, Ruobing0000-0001-9290-7846
Hashimoto, Jun0000-0002-3053-3575
Grady, Carol A.0000-0001-5440-1879
Janson, Markus0000-0001-8345-593X
Jovanovic, Nemanja0000-0001-5213-6207
Uyama, Taichi0000-0002-6879-3030
Nakagawa, Takao0000-0002-6660-9375
Kudo, Tomoyuki0000-0002-9294-1793
Kusakabe, Nobuhiko0000-0001-9194-1268
Kuzuhara, Masayuki0000-0002-4677-9182
Brandner, Wolfgang0000-0003-1939-6351
Brandt, Timothy D.0000-0003-2630-8073
Chilcote, Jeffrey0000-0001-6305-7272
Rich, Evan A.0000-0002-1779-8181
Feldt, Markus0000-0002-4188-5242
Groff, Tyler D.0000-0001-5978-3247
Guyon, Olivier0000-0002-1097-9908
Hayano, Yutaka0000-0003-4937-4233
Hodapp, Klaus W.0000-0003-0786-2140
Iye, Masanori0000-0002-5634-7770
Kandori, Ryo0000-0003-2610-6367
Knapp, Gillian R.0000-0002-9259-1164
Kwon, Jungmi0000-0003-2815-7774
Martinache, Frantz0000-0003-1180-4138
Mayama, Satoshi0000-0002-3424-6266
Miyama, Shoken0000-0001-5017-180X
Moro-Martin, Amaya0000-0001-9504-8426
Pyo, Tae-Soo0000-0002-3273-0804
Takami, Michihiro0000-0001-9248-7546
Terada, Hiroshi0000-0002-7914-6779
Thalmann, Christian0000-0002-1664-2177
Watanabe, Makoto0000-0002-3656-4081
Wisniewski, John P.0000-0001-9209-1808
Usuda, Tomonori0000-0001-9855-0163
Tamura, Motohide0000-0002-6510-0681
Additional Information:© 2020 The Author(s). Published by the American Astronomical Society. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Received 2019 April 27; revised 2019 December 21; accepted 2019 December 23; published 2020 February 3. We are grateful to the anonymous referee for constructive suggestions that improved our paper. This paper used data collected by the Subaru Telescope, which is operated by the National Astronomical Observatory of Japan (NAOJ) and the National Institutes of Natural Sciences (NINS). We thank the Subaru Telescope staff for their support during the observations. This paper made use of the following ALMA data: ADS/JAO.ALMA#2013.1.00105.S. ALMA is a partnership of ESO (representing its member states), NSF (USA), and NINS (Japan), together with NRC (Canada), NSC, ASIAA (Taiwan), and KASI (Republic of Korea), in cooperation with the Republic of Chile. The Joint ALMA Observatory is operated by ESO, auI/NRAO, and NAOJ. We would also like to acknowledge the access given to us to the SIMBAD database operated by the Strasbourg Astronomical Data Center (CDS), Strasbourg, France. IRAF is distributed by the National Optical Astronomy Observatory, which is operated by the Association of Universities for Research in Astronomy (auRA) under a cooperative agreement with the National Science Foundation. M.T. is supported by a grant-in-Aid for Scientific Research (no. 15H02063). E.A. is supported by MEXT/JSPS KAKENHI grant no. 17K05399.
Funding AgencyGrant Number
Japan Society for the Promotion of Science (JSPS)15H02063
Japan Society for the Promotion of Science (JSPS)17K05399
Ministry of Education, Culture, Sports, Science and Technology (MEXT)UNSPECIFIED
Subject Keywords:binaries: close (FS Tau A) – stars: pre-main sequence – protoplanetary disks
Issue or Number:2
Record Number:CaltechAUTHORS:20200814-132947086
Persistent URL:
Official Citation:Yi Yang et al 2020 ApJ 889 140
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:104963
Deposited By: Tony Diaz
Deposited On:14 Aug 2020 20:50
Last Modified:14 Aug 2020 20:50

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