High-Resolution Near-Infrared Polarimetry and Sub-Millimeter Imaging of FS Tau A: Possible Streamers in Misaligned Circumbinary Disk System
High-Resolution Near-Infrared Polarimetry and Sub-Millimeter Imaging of FS Tau A: Possible Streamers in Misaligned Circumbinary Disk System
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 sub-millimeter CO (J=2-1) line emission data from ALMA. Both the near-infrared and sub-millimeter observations reveal several clear structures extending to $\sim$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 LSRK velocity of 1.19-5.64 km/s. 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. 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.
Ryuji Suzuki、Masahiko Hayashi、Tomoyuki Kudo、Hiroshi Suto、John P. Wisniewski、Hiroshi Terada、Markus Janson、Frantz Martinache、Christian Thalmann、Jun Hashimoto、Hideki Takami、Lyu Abe、Shoken Miyama、Tyler Groff、Nemanja Jovanovic、Wolfgang Brandner、Miwa Goto、Markus Feldt、Masanori Iye、Klaus W. Hodapp、Miki Ishii、Ruobing Dong、Carol A. Grady、Satoshi Mayama、Jungmi Kwon、Taichi Uyama、Masayuki Kuzuhara、Naruhisa Takato、Nobuhiko Kusakabe、Ryo Kandori、Taro Matsuo、Thayne Currie、Jeremy Kasdin、Julien Lozi、Saeko S. Hayashi、Makoto Watanabe、Timothy D. Brandt、Thomas Henning、Tetsuo Nishimura、Joseph C. Carson、Jeffrey Chilcote、Evan A. Rich、Takao Nakagawa、Amaya Moro-Martin、Gillian R. Knapp、Yutaka Hayano、Eiji Akiyama、Edwin L. Turner、Olivier Guyon、Eugene Serabyn、Toru Yamada、Michael W. Mcelwain、Tomonori Usuda、Jun-Ichi Morino、Michael Bonnefoy、Yi Yang、Tae-Soo Pyo、Michihiro Takami、Motohide Tamura
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Ryuji Suzuki,Masahiko Hayashi,Tomoyuki Kudo,Hiroshi Suto,John P. Wisniewski,Hiroshi Terada,Markus Janson,Frantz Martinache,Christian Thalmann,Jun Hashimoto,Hideki Takami,Lyu Abe,Shoken Miyama,Tyler Groff,Nemanja Jovanovic,Wolfgang Brandner,Miwa Goto,Markus Feldt,Masanori Iye,Klaus W. Hodapp,Miki Ishii,Ruobing Dong,Carol A. Grady,Satoshi Mayama,Jungmi Kwon,Taichi Uyama,Masayuki Kuzuhara,Naruhisa Takato,Nobuhiko Kusakabe,Ryo Kandori,Taro Matsuo,Thayne Currie,Jeremy Kasdin,Julien Lozi,Saeko S. Hayashi,Makoto Watanabe,Timothy D. Brandt,Thomas Henning,Tetsuo Nishimura,Joseph C. Carson,Jeffrey Chilcote,Evan A. Rich,Takao Nakagawa,Amaya Moro-Martin,Gillian R. Knapp,Yutaka Hayano,Eiji Akiyama,Edwin L. Turner,Olivier Guyon,Eugene Serabyn,Toru Yamada,Michael W. Mcelwain,Tomonori Usuda,Jun-Ichi Morino,Michael Bonnefoy,Yi Yang,Tae-Soo Pyo,Michihiro Takami,Motohide Tamura.High-Resolution Near-Infrared Polarimetry and Sub-Millimeter Imaging of FS Tau A: Possible Streamers in Misaligned Circumbinary Disk System[EB/OL].(2019-12-24)[2025-06-15].https://arxiv.org/abs/1912.11301.点此复制
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