High-contrast Polarimetry Observation of the T Tau Circumstellar Environment
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Authors
Hayashi, SS
Hashimoto, J
Rafikov, R
Kusakabe, N
Abe, L
Brandner, W
Carson, JC
Egner, S
Feldt, M
Goto, M
Grady, CA
Hayashi, M
Henning, T
Ishii, M
Iye, M
Kuzuhara, M
Matsuo, T
McElwain, MW
Morino, JI
Nishimura, T
Serabyn, E
Suenaga, T
Suto, H
Suzuki, R
Takahashi, YH
Takato, N
Turner, EL
Yamada, T
Takami, H
Publication Date
2018Journal Title
Astrophysical Journal
ISSN
0004-637X
Publisher
American Astronomical Society
Volume
861
Issue
2
Type
Article
Metadata
Show full item recordCitation
Yang, Y., Mayama, S., Hayashi, S., Hashimoto, J., Rafikov, R., Akiyama, E., Currie, T., et al. (2018). High-contrast Polarimetry Observation of the T Tau Circumstellar Environment. Astrophysical Journal, 861 (2) https://doi.org/10.3847/1538-4357/aac6c8
Abstract
We conducted high-contrast polarimetry observations of T Tau in the H-band,
using the HiCIAO instrument mounted on the Subaru Telescope, revealing
structures as near as 0.$\arcsec$1 from the stars T Tau N and T Tau S. The
whole T Tau system is found to be surrounded by nebula-like envelopes, and
several outflow-related structures are detected in these envelopes. We analyzed
the detailed polarization patterns of the circumstellar structures near each
component of this triple young star system and determined constraints on the
circumstellar disks and outflow structures. We suggest that the nearly face-on
circumstellar disk of T Tau N is no larger than 0.$\arcsec$8, or 117 AU, in the
northwest, based on the existence of a hole in this direction, and no larger
than 0.$\arcsec$27, or 40 AU, in the south. A new structure "N5" extends to
about 0.$\arcsec$42, or 59 AU, on the southwest of the star, believed to be
part of the disk. We suggest that T Tau S is surrounded by a highly inclined
circumbinary disk with a radius of about 0.$\arcsec$3, or 44 AU, with a
position angle of about 30$^\circ$, that is misaligned with the orbit of the T
Tau S binary. After analyzing the positions and polarization vector patterns of
the outflow-related structures, we suggest that T Tau S should trigger the
well-known E-W outflow, and is also likely to be responsible for a southwest
precessing outflow "coil" and a possible south outflow.
Sponsorship
Science and Technology Facilities Council (ST/P000673/1)
Science and Technology Facilities Council (ST/L000636/1)
Identifiers
External DOI: https://doi.org/10.3847/1538-4357/aac6c8
This record's URL: https://www.repository.cam.ac.uk/handle/1810/284106
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