From traffic jams to roadblocks: The outer regions of TW Hya with ALMA Band 8

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Volume 689 (September 2024)

A&A, 689 (2024) A104

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Table 2

Properties of outer-disk substructures at 1.3, 0.87 and 0.65 mm.

Band	Wavelength (mm)	Gap location (au)	Gap width (au)	Ring location (au)	Ring width (au)	Contrast ratio
6	1.29	${79.11}_{- 1.80}^{+ 1.80}$ ${79.11_{ - 1.80}^{ + 1.80}}$	${4.51}_{- 1.26}^{+ 1.26}$ ${4.51_{ - 1.26}^{ + 1.26}}$	${86.33}_{- 4.87}^{+ 4.87}$ ${86.33_{ - 4.87}^{ + 4.87}}$	${9.02}_{- 1.26}^{+ 1.26}$ ${9.02_{ - 1.26}^{ + 1.26}}$	${1.61}_{- 0.96}^{+ 0.96}$ ${1.61_{ - 0.96}^{ + 0.96}}$
7	0.865	${79.47}_{- 1.98}^{+ 1.98}$ ${79.47_{ - 1.98}^{ + 1.98}}$	${4.69}_{- 1.44}^{+ 1.44}$ ${4.69_{ - 1.44}^{ + 1.44}}$	${85.61}_{- 1.98}^{+ 1.98}$ ${85.61_{ - 1.98}^{ + 1.98}}$	${6.31}_{- 1.44}^{+ 1.44}$ ${6.31_{ - 1.44}^{ + 1.44}}$	${1.37}_{- 0.96}^{+ 0.96}$ ${1.37_{ - 0.96}^{ + 0.96}}$
8 ^(a)	0.654	${85.97}_{- 2.40}^{+ 6.02}$ ${85.97_{ - 2.40}^{ + 6.02}}$	_ (b)	${95.59}_{- 6.01}^{+ 2.40}$ ${95.59_{ - 6.01}^{ + 2.40}}$	${19.73}_{- 2.44}^{+ 2.44}$ ${19.73_{ - 2.44}^{ + 2.44}}$	${1.05}_{- 0.62}^{+ 0.62}$ ${1.05_{ - 0.62}^{ + 0.62}}$

Notes. ^(a)The 0.65 mm substructure properties are calculated from the intensity profile in Fig. 2. ^(b)We do not report the D86 gap width since the separation is not clearly resolved in our model.

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