First detection of H2S in a protoplanetary disk - The dense GG Tauri A ring

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Volume 616 (August 2018)

A&A, 616 (2018) L5

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Table 2.

Observed and predicted surface densities (cm⁻²).

Detection			Non-detection

Molecule	Observed^a (derived from DiskFit)	Predicted^c (from Nautilus)	Molecule	Observed^a (derived from DiskFit)	Predicted^c (from Nautilus)
HCO⁺(1–0)	1.5 ± 0.04 × 10¹³	2.2 × 10¹²	CCS	<1.7 × 10¹²	7.2 × 10¹⁰
H¹³CO⁺ (2–1)	5.3 ± 0.3×10¹¹	(–)	SO₂	<1.5 × 10¹²	6.0 × 10¹²
DCO⁺ (3–2)	3.9 ± 0.2 × 10¹¹	7.0 × 10¹⁰	SO	<1.1 × 10¹²	1.5 × 10¹³
H₂S 1(1,0)–1(0,1)	1.3 ± 0.1 ×10¹²	3.4 ×10¹³	HC₃N	<3.2 × 10¹¹	5.7 ×10¹¹
CS(3–2)	2.2 × 10¹³^b	1.4 × 10¹³	c-C₃H₂	<2.7 × 10¹¹	2.4 × 10¹²

Notes.

^(a)

Observed surface density at 250 au is derived using DiskFit.

^(b)

Phuong et al., in prep.

^(c)

Species surface density in the gas phase at 250 au predicted with Nautilus. (−) Our model does not include carbon isotope chemistry.

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