Disentangling the dust and gas contributions of the JWST/MIRI spectrum of Sz 28

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Volume 690 (October 2024)

A&A, 690 (2024) A100

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Table 4

Posterior parameter values and uncertainties for selected parameters of the Sz 28 fit.

Parameter		Posterior	Parameter		Posterior
T_rim		$974_{- 9}^{+ 11}$ $\[974_{-9}^{+11}\]$ K		r_eff	$26_{- 25}^{+ 11}$ $\[26_{-25}^{+11}\]$ au
$T_{min}^{s u r}$ $\[T_{\min }^{\mathrm{sur}}\]$		$292_{- 21}^{+ 13}$ $\[292_{-21}^{+13}\]$ K		t_0.85	$42_{- 12}^{+ 33}$ $\[42_{-12}^{+33}\]$ K
$T_{max}^{s u r}$ $\[T_{\max }^{\mathrm{sur}}\]$		$800_{- 400}^{+ 500}$ $\[800_{-400}^{+500}\]$ K	C₃H₄	t_0.15	$64_{- 14}^{+ 60}$ $\[64_{-14}^{+60}\]$ K
$T_{m i n}^{m i d}$ $\[T_{\mathrm{min}}^{\mathrm{mid}}\]$		$229_{- 11}^{+ 10}$ $\[229_{-11}^{+10}\]$ K		∑₀_.85	$5_{\div 20}^{\times 3.4}$ $\[5_{\div20}^{\times3.4}\]$ (+19) cm⁻²
$T_{max}^{mid}$ $\[T_{\max }^{\operatorname{mid}}\]$		$980_{- 330}^{+ 320}$ $\[980_{-330}^{+320}\]$ K		∑₀_.15	$7_{\div 36}^{\times 6.2}$ $\[7_{\div36}^{\times6.2}\]$ (+18) cm⁻²
q_mid		$- {0.19}_{- 0.05}^{+ 0.05}$ $\[-0.19_{-0.05}^{+0.05}\]$		r_eff	${0.058}_{- 0.004}^{+ 0.005}$ $\[0.058_{-0.004}^{+0.005}\]$ au
q_sur		$- {0.17}_{- 0.11}^{+ 0.05}$ $\[-0.17_{-0.11}^{+0.05}\]$		t_0.85	$286_{- 27}^{+ 10}$ $\[286_{-27}^{+10}\]$ K
q_emis		$- {0.136}_{- 0.11}^{+ 0.024}$ $\[-0.136_{-0.11}^{+0.024}\]$	C₂H₂	t_0.15	$306_{- 6}^{+ 5}$ $\[306_{-6}^{+5}\]$ K
a_obs		${0.01436}_{- 0.00011}^{+ 0.00010}$ $\[0.01436_{-0.00011}^{+0.00010}\]$		∑₀_.85	$5_{- 4}^{+ 14}$ $\[5_{-4}^{+14}\]$ (+17) cm⁻²
	r_eff	$14_{- 13}^{+ 80}$ $\[14_{-13}^{+80}\]$ au		∑₀_.15	${4.3}_{- 1.3}^{+ 3.4}$ $\[4.3_{-1.3}^{+3.4}\]$ (+20) cm⁻²
	t_0.85	$64_{- 13}^{+ 40}$ $\[64_{-13}^{+40}\]$ K		r_eff	${0.110}_{- 0.032}^{+ 0.06}$ $\[0.110_{-0.032}^{+0.06}\]$ au
NH₃	t₀_.15	$110_{- 40}^{+ 80}$ $\[110_{-40}^{+80}\]$ K		t_0.85	$172_{- 32}^{+ 16}$ $\[172_{-32}^{+16}\]$ K
	∑_0.85	$5_{- 4}^{+ 33}$ $\[5_{-4}^{+33}\]$ (+19) cm⁻²	C₆H₆	t_0.15	$198_{- 15}^{+ 27}$ $\[198_{-15}^{+27}\]$ K
	∑₀_.15	${2.6}_{- 2.5}^{+ 18}$ $\[2.6_{-2.5}^{+18}\]$ (+19) cm⁻²		∑₀_.85	${3.1}_{- 0.8}^{+ 1.0}$ $\[3.1_{-0.8}^{+1.0}\]$ (+17) cm⁻²
	r_eff	${0.026}_{- 0.004}^{+ 0.008}$ $\[0.026_{-0.004}^{+0.008}\]$ au		∑₀_.15	${2.8}_{- 0.6}^{+ 0.7}$ $\[2.8_{-0.6}^{+0.7}\]$ (+17) cm⁻²
	t_0.85	$330_{- 20}^{+ 21}$ $\[330_{-20}^{+21}\]$ K		r_eff	${0.052}_{- 0.013}^{+ 0.019}$ $\[0.052_{-0.013}^{+0.019}\]$ au
CH₄	t_0.15	$372_{- 22}^{+ 24}$ $\[372_{-22}^{+24}\]$ K		t_0.85	$203_{- 26}^{+ 29}$ $\[203_{-26}^{+29}\]$ K
	∑₀_.85	${3.3}_{- 1.0}^{+ 1.5}$ $\[3.3_{-1.0}^{+1.5}\]$ (+20) cm⁻²	CO₂	t_0.15	$241_{- 31}^{+ 40}$ $\[241_{-31}^{+40}\]$ K
	∑₀_.15	${1.4}_{\div 304}^{\times 1.5}$ $\[1.4_{\div304}^{\times1.5}\]$ (+20) cm⁻²		∑₀_.85	$9_{- 6}^{+ 40}$ $\[9_{-6}^{+40}\]$ (+18) cm⁻²
	r_eff	${1.7}_{- 1.0}^{+ 6}$ $\[1.7_{-1.0}^{+6}\]$ au		∑₀_.15	$9_{- 6}^{+ 24}$ $\[9_{-6}^{+24}\]$ (+18) cm⁻²
	t_0.85	$78_{- 20}^{+ 17}$ $\[78_{-20}^{+17}\]$ K		r_eff	${0.26}_{- 0.16}^{+ 0.4}$ $\[0.26_{-0.16}^{+0.4}\]$ au
C₂H₆	t_0.₁₅	$100_{- 16}^{+ 24}$ $\[100_{-16}^{+24}\]$ K		t_0.85	$190_{- 50}^{+ 50}$ $\[190_{-50}^{+50}\]$ K
	∑₀_.85	$7_{- 5}^{+ 33}$ $\[7_{-5}^{+33}\]$ (+21) cm⁻²	HC₃N	t_0.15	$230_{- 50}^{+ 50}$ $\[230_{-50}^{+50}\]$ K
	∑₀_.15	${1.8}_{- 1.4}^{+ 6}$ $\[1.8_{-1.4}^{+6}\]$ (+21) cm⁻²		∑₀_.85	${1.6}_{- 1.3}^{+ 11}$ $\[1.6_{-1.3}^{+11}\]$ (+15) cm⁻²
	r_eff	${0.25}_{- 0.14}^{+ 0.23}$ $\[0.25_{-0.14}^{+0.23}\]$ au		∑₀_.15	${3.6}_{- 3.0}^{+ 23}$ $\[3.6_{-3.0}^{+23}\]$ (+15) cm⁻²
	t_0.85	$695_{- 40}^{+ 35}$ $\[695_{-40}^{+35}\]$ K	NH₃	$N$ $\[\mathcal{N}\]$ _tot	$7_{\div 3039}^{\times 124}$ $\[7_{\div3039}^{\times124}\]$ (+48)
HCN	t_0.15	$820_{- 40}^{+ 70}$ $\[820_{-40}^{+70}\]$ K	CH₄	$N$ $\[\mathcal{N}\]$ _tot	$9_{- 5}^{+ 9}$ $\[9_{-5}^{+9}\]$ (+43)
	∑₀_.85	$8_{- 6}^{+ 40}$ $\[8_{-6}^{+40}\]$ (+14) cm⁻²	C₂H₆	$N$ $\[\mathcal{N}\]$ _tot	${1.0}_{\div 16}^{\times 72}$ $\[1.0_{\div16}^{\times72}\]$ (+49)
	∑₀_.15	${1.9}_{- 1.5}^{+ 8}$ $\[1.9_{-1.5}^{+8}\]$ (+15) cm⁻²	HCN	$N$ $\[\mathcal{N}\]$ _tot	${5.1}_{- 0.4}^{+ 0.4}$ $\[5.1_{-0.4}^{+0.4}\]$ (+40)
	r_eff	${0.09}_{- 0.08}^{+ 1.5}$ $\[0.09_{-0.08}^{+1.5}\]$ au	CH₃	$N$ $\[\mathcal{N}\]$ _tot	${1.1}_{\div 24}^{\times 366}$ $\[1.1_{\div24}^{\times366}\]$ (+43)
	t_0.85	$180_{- 100}^{+ 150}$ $\[180_{-100}^{+150}\]$ K	C₄H₂	$N$ $\[\mathcal{N}\]$ _tot	${3.5}_{- 2.0}^{+ 17}$ $\[3.5_{-2.0}^{+17}\]$ (+43)
CH₃	t₀_.15	$220_{- 110}^{+ 170}$ $\[220_{-110}^{+170}\]$ K	C₃H₄	$N$ $\[\mathcal{N}\]$ _tot	${2.3}_{\div 37754}^{\times 4.1}$ $\[2.3_{\div37754}^{\times4.1}\]$ (+49)
	∑₀_.85	${2.2}_{\div 39}^{\times 1117}$ $\[2.2_{\div39}^{\times1117}\]$ (+17) cm⁻²	C₂H₂	$N$ $\[\mathcal{N}\]$ _tot	${1.03}_{- 0.24}^{+ 0.7}$ $\[1.03_{-0.24}^{+0.7}\]$ (+44)
	∑₀_.15	${3.1}_{- 3.0}^{+ 1500}$ $\[3.1_{-3.0}^{+1500}\]$ (+18) cm⁻²	C₆H₆	$N$ $\[\mathcal{N}\]$ _tot	${2.4}_{- 1.2}^{+ 4}$ $\[2.4_{-1.2}^{+4}\]$ (+42)
	r_eff	${0.066}_{- 0.020}^{+ 0.06}$ $\[0.066_{-0.020}^{+0.06}\]$ au	CO₂	$N$ $\[\mathcal{N}\]$ _tot	${1.8}_{- 1.2}^{+ 6}$ $\[1.8_{-1.2}^{+6}\]$ (+43)
	t_0.85	$152_{- 17}^{+ 15}$ $\[152_{-17}^{+15}\]$ K	HC₃N	$N$ $\[\mathcal{N}\]$ _tot	$8_{- 4}^{+ 25}$ $\[8_{-4}^{+25}\]$ (+40)
C₄H₂	t_0.15	$173_{- 15}^{+ 17}$ $\[173_{-15}^{+17}\]$ K
	∑₀_.85	${2.0}_{- 1.5}^{+ 7}$ $\[2.0_{-1.5}^{+7}\]$ (+19) cm⁻²
	∑₀_.15	${1.3}_{- 0.6}^{+ 1.0}$ $\[1.3_{-0.6}^{+1.0}\]$ (+19) cm⁻²

Notes. The notation a(+b) means a × 10^b. For parameters that have a lower limit of more than an order of magnitude below the retrieved value, the uncertainties are provided as factors. $N$ $\[\mathcal{N}\]$ _tot denotes the total number of molecules that contributed to the described emission and not the total number of molecules in the disk.

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