J/A+A/648/A19 Spiral structure in the gas disc of CQ Tau (Woelfer+, 2021)
A highly non-Keplerian protoplanetary disc:
Spiral structure in the gas disc of CQ Tau.
Woelfer L., Facchini S., Kurtovic N.T., Teague R., van Dishoeck E.F.,
Benisty M., Ercolano B., Lodato G., Miotello A., Rosotti G., Testi L.,
Ubeira Gabellini M.G.
<Astron. Astrophys. 648, A19 (2021)>
=2021A&A...648A..19W 2021A&A...648A..19W (SIMBAD/NED BibCode)
ADC_Keywords: YSOs ; Millimetric/submm sources ; Carbon monoxide
Keywords: accretion, accretion discs - protoplanetary discs -
planet-disc interactions - submillimeter: planetary systems -
stars: individual: CQ Tau
Abstract:
We used spatially resolved ALMA observations of the three CO
isotopologues 12CO, 13CO and C18O (J=2-1) from CQ Tau to analyse
the brightness temperature and kinematics of the gas disc. We detect
significant spiral structures in both the brightness temperature and
the rotation velocity of 12CO after subtraction of an azimuthally
symmetric model, which may be tracing planet-disc interactions with an
embedded planet or low-mass companion. The brightness temperature
spirals are morphologically connected to spirals observed in NIR
scattered light in the same disc, indicating a common origin. Together
with the observed large dust and gas cavity, these spiral structures
support the hypothesis of a massive embedded companion in the CQ Tau
disc.
Description:
We provide the reduced datacubes of the 12CO, 13CO and C18O
(J=2-1) ALMA observations of CQ Tau. The units are Jy/beam.
Objects:
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RA (2000) DE Designation(s)
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05 35 58.47 +24 44 54.1 CQ Tau = HD 36910
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
list.dat 147 3 List of FITS image cubes
fits/* . 3 Individual FITS image cubes
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Byte-by-byte Description of file: list.dat
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Bytes Format Units Label Explanations
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1- 9 F9.5 deg RAdeg Right Ascension of center (J2000)
10- 18 F9.5 deg DEdeg Declination of center (J2000)
20- 22 I3 --- Nx Number of pixels along X-axis
24- 26 I3 --- Ny Number of pixels along Y-axis
28- 29 I2 --- Nz Number of slices
31- 56 A26 "datime" Obs.date Observation date
58- 71 F14.10 GHz Freq Rest frequency
73- 79 F7.3 GHz bFreq Lower value of frequency interval
81- 87 F7.3 GHz BFreq Upper value of frequency interval
89- 94 I6 Hz dFreq Frequency resolution
96-100 I5 Kibyte size Size of FITS file
102-116 A15 --- FileName Name of FITS file, in subdirectory fits
118-147 A30 --- Title Title of the FITS file
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Acknowledgements:
Lisa Woelfer, woelfer(at)mpe.mpg.de
(End) Patricia Vannier [CDS] 25-Feb-2021