2020ApJ...889..140Y

Query : 2020ApJ...889..140Y

2020ApJ...889..140Y - Astrophys. J., 889, 140-140 (2020/February-1)

High-resolution near-infrared polarimetry and submillimeter imaging of FS Tau A: possible streamers in misaligned circumbinary disk system.

YANG Y., AKIYAMA E., CURRIE T., DONG R., HASHIMOTO J., HAYASHI S.S., GRADY C.A., JANSON M., JOVANOVIC N., UYAMA T., NAKAGAWA T., KUDO T., KUSAKABE N., KUZUHARA M., ABE L., BRANDNER W., BRANDT T.D., BONNEFOY M., CARSON J.C., CHILCOTE J., RICH E.A., FELDT M., GOTO M., GROFF T.D., GUYON O., HAYANO Y., HAYASHI M., HENNING T., HODAPP K.W., ISHII M., IYE M., KANDORI R., KASDIN J., KNAPP G.R., KWON J., LOZI J., MARTINACHE F., MATSUO T., MAYAMA S., McELWAIN M.W., MIYAMA S., MORINO J.-I., MORO-MARTIN A., NISHIMURA T., PYO T.-S., SERABYN E., SUTO H., SUZUKI R., TAKAMI M., TAKATO N., TERADA H., THALMANN C., TURNER E.L., WATANABE M., WISNIEWSKI J.P., YAMADA T., TAKAMI H., USUDA T. and TAMURA M.

Abstract (from CDS):

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.

Abstract Copyright: © 2020 The Author(s). Published by the American Astronomical Society.

Journal keyword(s): binaries: close FS Tau A - stars: pre-main sequence - protoplanetary disks

Simbad objects: 11

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Number of rows : 11
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 JCMTSE J032536.1+304514 Y*O 03 25 36.22 +30 45 15.7           ~ 145 0
2 2MASS J04220069+2657324 Y*O 04 22 01.00944 +26 57 35.2692           ~ 46 0
3 V* FS Tau Or* 04 22 02.1798627024 +26 57 30.575293308 17.57   14.10 15.63   M3.5e+M0e 289 0
4 HD 283641 TT* 04 24 49.0452856368 +26 43 10.395844176   12.41 11.42     K0 45 0
5 V* IP Tau Or* 04 24 57.0824018640 +27 11 56.539953888   14.50   12.46   M0:Ve 265 0
6 NVSS J042655+232740 rG 04 26 55.7348120 +23 27 39.633401       20.10   ~ 55 1
7 QSO B0507+179 Bla 05 10 02.36912937 +18 00 41.5815635   20.0 19.0 19.09   ~ 470 1
8 NAME ROXs 42Bb Pl 16 31 14.93 -24 32 43.7           M8-L0 62 0
9 Kepler-16b Pl 19 16 18.1758378936 +51 45 26.782726104           ~ 178 1
10 M 15 GlC 21 29 58.33 +12 10 01.2           ~ 3274 0
11 * gam Cep b Pl 23 39 20.9104133784 +77 37 56.510781384           ~ 90 1

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