The millimeter IRAM-30 m line survey toward IK Tauri

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Table 6

Isotopic ratios obtained from the abundances derived with the population diagrams.

Ratio	Value	From

¹²C/¹³C	>8 (~10)	CO
¹²C/¹³C	10	CS
¹²C/¹³C	>8 (~15)	HCN
¹⁶O/¹⁸O	≫61	SiO
¹⁶O/¹⁷O	≫91	SiO
²⁸Si/²⁹Si	>4 (~18)	SiO
²⁸Si/²⁹Si	11	SiS
²⁸Si/³⁰Si	>6 (~34)	SiO
²⁸Si/³⁰Si	16	SiS
³²S/³⁴S	>8 (~15)	SO
³²S/³⁴S	13	CS
³²S/³⁴S	12	SiS
³²S/³⁴S	>10 (~13)^†	SO₂

Notes. Opacity corrected values are given between parentheses (see Sect. 6.10).

^(†)

This value was computed using only the cold SO₂ component in Table 5.

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