Constraining the stellar masses and origin of the protostellar VLA 1623 system

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Volume 687 (July 2024)

A&A, 687 (2024) A308

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Table 2

Best-fit model parameters.

Parameters	A	B	W
M_* (M_⊙)	${0.27}_{- 0.03}^{+ 0.03}$ $0.27_{ - 0.03}^{ + 0.03}$	${1.9}_{- 0.2}^{+ 0.3}$ $1.9_{ - 0.2}^{ + 0.3}$	${0.64}_{- 0.06}^{+ 0.06}$ $0.64_{ - 0.06}^{ + 0.06}$
M_disk (10⁻³ M_⊙)	$54_{- 5}^{+ 5}$ $54_{ - 5}^{ + 5}$	>1	${1.7}_{- 0.2}^{+ 0.2}$ $1.7_{ - 0.2}^{ + 0.2}$
R_in (au)	$48_{- 5}^{+ 5}$ $48_{ - 5}^{ + 5}$	0.1	0.1
R_disk (au)	$316_{- 32}^{+ 32}$ ${316_{ - 32}^{ + 32}}$	$43_{- 5}^{+ 5}$ ${43_{ - 5}^{ + 5}}$	$108_{- 11}^{+ 11}$ ${108_{ - 11}^{ + 11}}$
γ	${2.0}_{- 0.2}^{+ 0.2}$ ${2.0_{ - 0.2}^{ + 0.2}}$	${0.1}_{- 0.5}^{+ 1.0}$ ${0.1_{ - 0.5}^{ + 1.0}}$	${0.1}_{- 0.1}^{+ 0.1}$ ${0.1_{ - 0.1}^{ + 0.1}}$
T₀ (K)	$148_{- 25}^{+ 15}$ ${148_{ - 25}^{ + 15}}$	$34_{- 9}^{+ 56}$ ${34_{ - 9}^{ + 56}}$	$898_{- 173}^{+ 116}$ ${898_{ - 173}^{ + 116}}$
q	${0.38}_{- 0.05}^{+ 0.04}$ ${0.38_{ - 0.05}^{ + 0.04}}$	${0.06}_{- 0.05}^{+ 0.26}$ ${0.06_{ - 0.05}^{ + 0.26}}$	${0.83}_{- 0.10}^{+ 0.09}$ ${0.83_{ - 0.10}^{ + 0.09}}$
a_turb (km s⁻¹)	${0.68}_{- 0.07}^{+ 0.07}$ ${0.68_{ - 0.07}^{ + 0.07}}$	${0.19}_{- 0.08}^{+ 0.24}$ ${0.19_{ - 0.08}^{ + 0.24}}$	${0.56}_{- 0.07}^{+ 0.07}$ ${0.56_{ - 0.07}^{ + 0.07}}$
i (°)	${58.9}_{- 0.3}^{+ 0.6}$ ${58.9_{ - 0.3}^{ + 0.6}}$	$91_{- 2}^{+ 16}$ ${91_{ - 2}^{ + 16}}$	${74.8}_{- 0.5}^{+ 0.5}$ ${74.8_{ - 0.5}^{ + 0.5}}$
PA (°)	${296.27}_{- 0.12}^{+ 0.01}$ ${296.27_{ - 0.12}^{ + 0.01}}$	$136_{- 2}^{+ 1}$ ${136_{ - 2}^{ + 1}}$	${281.1}_{- 0.5}^{+ 0.4}$ ${281.1_{ - 0.5}^{ + 0.4}}$
υ_sys (km s⁻¹)	${3.998}_{- 0.002}^{+ 0.002}$ ${3.998_{ - 0.002}^{ + 0.002}}$	${2.31}_{- 0.09}^{+ 0.09}$ ${2.31_{ - 0.09}^{ + 0.09}}$	${1.75}_{- 0.01}^{+ 0.02}$ ${1.75_{ - 0.01}^{ + 0.02}}$
x₀ (mas)	$- {39.4}_{- 0.7}^{+ 1.3}$ ${ - 39.4_{ - 0.7}^{ + 1.3}}$	$52_{- 6}^{+ 7}$ ${52_{ - 6}^{ + 7}}$	$- 82_{- 3}^{+ 3}$ ${ - 82_{ - 3}^{ + 3}}$
y₀ (mas)	$- {90.3}_{- 0.8}^{+ 1.1}$ ${ - 90.3_{ - 0.8}^{ + 1.1}}$	$- 23_{- 5}^{+ 5}$ ${ - 23_{ - 5}^{ + 5}}$	$- 11_{- 3}^{+ 3}$ ${ - 11_{ - 3}^{ + 3}}$

Notes. An additional 10% uncertainty has been added in quadrature to the best-fit values for all parameters except i, PA, υ_sys, x₀, and y₀ (see text for details).

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