Multi-scale radiative-transfer model of the protoplanetary disc DoAr 44

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Volume 701 (September 2025)

A&A, 701 (2025) A203

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Table 5

Best-fit parameters of the global model.

Parameter	Object	Best-fit	σ	Unit
r_*	`STAR`	2.0	0.2	R_⊙
T_*	`STAR`	4750	150	K
M_*	`STAR`	1.4	0.2	M_⊙
r_insh	`SHELL`	3	0.1	R_⊙
r_outsh	`SHELL`	22	1	R_⊙
v_sh	`SHELL`	385	5	km s⁻¹
ϱ_sh	`SHELL`	1.8 · 10⁻¹³	3 · 10⁻¹⁴	g cm⁻³
T_sh	`SHELL`	9100	200	K
e_velsh	`SHELL`	1	0.1	1
r_innb1	`DISC`	16.5	3	R_⊙
r_{outnb 1}	`DISC`	35	5	R_⊙
ϱ_{nb 1}	`DISC`	1.0 · 10⁻⁸	3 · 10⁻⁹	g cm⁻³
T_{nb 1}	`DISC`	1900	200	K
e_dennbl	`DISC`	−0.5	0.1	1
e_tmpnb1	`DISC`	−0.7	0.1	1
r_innb2	`DISC`	43	10	R_⊙
r_outnb2	`DISC`	215	20	R_⊙
ϱ_{nb 2}	`DISC`	6 · 10⁻¹⁰	1 · 10⁻¹⁰	g cm⁻³
T_nb2	`DISC`	1000	20	K
e_dennb2	`DISC`	−1.3	0.1	1
e_tmpnb2	`DISC`	−0.6	0.1	1
r_innb3	`DISC`	8600	200	R_⊙
r_outnb3	`DISC`	12900	200	R_⊙
ϱ_dstnb3	`DISC`	1 · 10⁻¹⁴	*	g cm⁻³
T_nb3	`DISC`	60	10	K
e_dennb3	`DISC`	−2.5	0.1	1
e_tmpnb3	`DISC`	−0.8	0.1	1
Global model	$χ_{SED}^{2}$ $\$\chi_{\text {SED}}^{2}$$	7022	N_SED	128
Accretion region	$χ_{SPE}^{2}$ $\$\chi_{\text {SPE}}^{2}$$	201	N_SPE	200
Accretion region	$χ_{V2,VLTI}^{2}$ $\$\chi_{\text {V2,VLTI}}^{2}$$	8648	N_{IF, VLTI}	512
Accretion region	$χ_{C P}^{2}$ $\$\chi_{\mathrm{CP}}^{2}$$	170	N_CP	416
Outer disc	$χ_{V 2, ALMA}^{2}$ $\$\chi_{\text {V} 2, \text {ALMA}}^{2}$$	18689	N_{V2, ALMA}	3886

Notes. Model parameters are separated into parameters belonging to the star, shell, innermost disc, intermediary disc, and outer disc. (*) The dust density of the outer disc is only given as a lower bound. The value of $χ_{SED}^{2}$ $\$\chi_{\text {SED}}^{2}$$ is computed based on the global model, whereas the other contributions were calculated in the separate components.

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