The complex inner disk of the Herbig Ae star HD 100453 with VLTI/MATISSE

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Volume 708 (April 2026)

A&A, 708 (2026) A256

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Table 3

Fit results of the parametric models to the L band data.

Parameters		(1) Sym.	(2) Asym.	(3) Asym.
l_a	(mas)	${0.590}_{- 0.001}^{+ 0.001}$ $Mathematical equation: $0.590_{-0.001}^{+0.001}$$	${0.589}_{- 0.001}^{+ 0.001}$ $Mathematical equation: $0.589_{-0.001}^{+0.001}$$	⁽¹⁾
l_kr		$- {0.041}_{- 0.002}^{+ 0.002}$ $Mathematical equation: $-0.041_{-0.002}^{+0.002}$$	$- {0.005}_{- 0.003}^{+ 0.002}$ $Mathematical equation: $-0.005_{-0.003}^{+0.002}$$	⁽¹⁾
f_Lor		${1.000}_{- 0.001}^{+ 0.}$ $Mathematical equation: $1.000_{-0.001}^{+0.}$$	${0.960}_{- 0.004}^{+ 0.005}$ $Mathematical equation: $0.960_{-0.004}^{+0.005}$$	⁽¹⁾
e		${1.500}_{- 0.002}^{+ 0.002}$ $Mathematical equation: $1.500_{-0.002}^{+0.002}$$	${1.481}_{- 0.002}^{+ 0.002}$ $Mathematical equation: $1.481_{-0.002}^{+0.002}$$	⁽¹⁾
(θ_inc)^a	(°)	( ${48.19}_{- 0.07}^{+ 0.07}$ $Mathematical equation: $48.19_{-0.07}^{+0.07}$$ )	( ${47.53}_{- 0.07}^{+ 0.07}$ $Mathematical equation: $47.53_{-0.07}^{+0.07}$$ )	⁽¹⁾
θ_PA	(°)	${85.88}_{- 0.17}^{+ 0.15}$ $Mathematical equation: $85.88_{-0.17}^{+0.15}$$	${83.57}_{- 0.14}^{+ 0.14}$ $Mathematical equation: $83.57_{-0.14}^{+0.14}$$	⁽¹⁾
A_skw		–	${0.315}_{- 0.003}^{+ 0.003}$ $Mathematical equation: $0.315_{-0.003}^{+0.003}$$	${0.282}_{- 0.003}^{+ 0.003}$ $Mathematical equation: $0.282_{-0.003}^{+0.003}$$
θ_skwPA	(°)	–	${18.33}_{- 0.18}^{+ 0.17}$ $Mathematical equation: $18.33_{-0.18}^{+0.17}$$	${14.54}_{- 0.03}^{+ 0.03}$ $Mathematical equation: $14.54_{-0.03}^{+0.03}$$
k_c		${0.37}_{- 0.06}^{+ 0.07}$ $Mathematical equation: $0.37_{-0.06}^{+0.07}$$	${1.83}_{- 0.10}^{+ 0.10}$ $Mathematical equation: $1.83_{-0.10}^{+0.10}$$	⁽¹⁾
f_s		${0.040}_{- 0.012}^{+ 0.007}$ $Mathematical equation: $0.040_{-0.012}^{+0.007}$$	${0.031}_{- 0.009}^{+ 0.006}$ $Mathematical equation: $0.031_{-0.009}^{+0.006}$$	⁽¹⁾
f_c		${0.735}_{- 0.222}^{+ 0.136}$ $Mathematical equation: $0.735_{-0.222}^{+0.136}$$	${0.75}_{- 0.21}^{+ 0.14}$ $Mathematical equation: $0.75_{-0.21}^{+0.14}$$	⁽¹⁾

$χ_{r, v i s^{2}}^{2}$ $Mathematical equation: $\chi^2_{\rm{r, vis^2}}$$		2.8	2.8	2.8
$χ_{r, Φ_{c p}}^{2}$ $Mathematical equation: $\chi^2_{\rm{r,} \Phi_{\rm{cp}}}$$		13.4	7.4	7.4
$χ_{r}^{2}$ $Mathematical equation: $\chi^2_{\rm{r}}$$		7.0	4.7	4.7

Notes. The values represent median values with 16-84% quantile values. Models 1, 2, and 3 represent a symmetric ring, an asymmetric ring, and an asymmetric ring. All parameters except those controlling the asymmetry were fixed to the best-fit values of the symmetric model (see Appendix D for a discussion of the uncertainties). ^(a)Elongation was converted to inclination for convenience. ⁽¹⁾Same value as model 1.

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