FAUST - XVIII. Evidence of annular substructure in a very young Class 0 disk

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Volume 689 (September 2024)

A&A, 689 (2024) L5

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Table B.1.

Resultant parameters for each model.

Parameter	smooth disk	disk with a gap	disk with a ring
F_tot [mJy]	$19 . 11_{- 0.43}^{+ 0.51}$ $19.11^{+0.51}_{-0.43}$	$19 . 94_{- 0.55}^{+ 1.02}$ $19.94^{+1.02}_{-0.55}$	$14 . 24_{- 1.15}^{+ 1.41}$ $14.24^{+1.41}_{-1.15}$
r_c [au]	$31 . 1_{- 1.5}^{+ 1.3}$ $31.1^{+1.3}_{-1.5}$	$36 . 1_{- 1.3}^{+ 1.4}$ $36.1^{+1.4}_{-1.3}$	$27 . 3_{- 1.8}^{+ 2.0}$ $27.3^{+2.0}_{-1.8}$
γ₁	$- 0 . 63_{- 0.03}^{+ 0.04}$ $-0.63^{+0.04}_{-0.03}$	$- 0 . 71_{- 0.02}^{+ 0.03}$ $-0.71^{+0.03}_{-0.02}$	$- 0 . 72_{- 0.02}^{+ 0.03}$ $-0.72^{+0.03}_{-0.02}$
γ₂	$2 . 27_{- 0.26}^{+ 0.29}$ $2.27^{+0.29}_{-0.26}$	$3 . 99_{- 0.92}^{+ 2.00}$ $3.99^{+2.00}_{-0.92}$	$7 . 54_{- 2.75}^{+ 3.86}$ $7.54^{+3.86}_{-2.75}$
I_a [μJy au⁻²]	...	$- 2 . 19_{- 7.46}^{+ 0.74}$ $-2.19^{+0.74}_{-7.46}$	$1 . 77_{- 0.26}^{+ 0.41}$ $1.77^{+0.41}_{-0.26 }$
r_a [au]	...	$27 . 9_{- 0.6}^{+ 0.6}$ $27.9^{+0.6}_{-0.6}$	$34 . 4_{- 2.1}^{+ 1.7}$ $34.4^{+1.7}_{-2.1}$
σ_a [au]	...	$1 . 4_{- 1.2}^{+ 2.3}$ $1.4^{+2.3}_{-1.2}$	$3 . 9_{- 1.9}^{+ 2.0}$ $3.9^{+2.0}_{-1.9}$

R₉₅ [au]	$43 . 5_{- 2.5}^{+ 2.5}$ $43.5^{+2.5}_{-2.5}$	$39 . 5_{- 2.5}^{+ 2.5}$ $39.5^{+2.5}_{-2.5}$	$26 . 5_{- 2.0}^{+ 4.0}$ $26.5^{+4.0}_{-2.0}$

Notes. The equations used for the models are described in Section 3.1. r_c is the characteristic disk radius, γ₁ is the inner disk power-law index and γ₂ is the power-law index describing the slope of the exponential cutoff, and F_tot is total disk flux. The parameters describing the Gaussian annular substructure are r_a, I_a, and σ_a, corresponding to the radius, intensity peak and width of the ring/gap respectively. R₉₅ corresponds to the resultant radius containing 95% of the flux.

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