Sulfur monoxide (SO) as a shock tracer in protoplanetary disks: Case of AB Aurigae

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Volume 689 (September 2024)

A&A, 689 (2024) L7

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Table 2.

AB Aurigae ring parameters derived from SO lines.

Geometry		Law
Distance	155.9 pc
V_LSR	5.85 km s⁻¹	$V (r) = 4.55 \pm 0.4 {(\frac{r}{100 au})}^{- 0.50 \pm 0.01}$ $V(r)=4.55\pm0.4\,(\frac{r}{100\,\mathrm{au}})^{-0.50\pm0.01}$ km s⁻¹
Inclination	22°	$T (r) = 20 \pm 1 {(\frac{r}{200 au})}^{- 0.4}$ $T(r)= 20 \pm 1\, (\frac{r}{200\,\mathrm{au}})^{-0.4}$ K
Orientation	−36.5°
		$H (r) = 11 {(\frac{r}{100 au})}^{1.25}$ $H(r)= 11\, (\frac{r}{100\,\mathrm{au}})^{1.25}$ au
R_int	165±3 au
R_out	400±10 au	$Σ (r) = 1.5 \pm 0.1 10^{13} {(\frac{r}{200 au})}^{- 1.65 \pm 0.05}$ $\Sigma(r)=1.5 \pm 0.1 \, 10^{13}\,(\frac{r}{200\,\mathrm{au}})^{-1.65\pm0.05}$ cm⁻²
		δV = 0.25 ± 0.01 km s⁻¹

Notes. Parameters with no error bars were fixed at their specified values. δ V is the FWHM local line width. The temperature exponent being loosely constrained (0.54 ± 0.20) was assumed to be 0.4.

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