Table 5: Species present in the inner wind of S stars as a function of C/O ratios and position.
C/O Species Position from 1 to 5 $R_{\star }$

0.98 CO, SiO, HCN, CS, H₂O, CO₂, SO, HS, S any radius - similar to O-rich AGBs

1 CO, SiO, HCN, CS any radius

CO₂, SO, H₂O, OH, HS, S present from 1 to 2,5 $R_{\star }$

C₂H₂, SiS, Si present after 3 $R_{\star }$

1.01 CO, SiO, HCN, CS, C₂H₂, SiS, Si any radius - similar to C-rich AGBs

**Table 5:** Species present in the inner wind of S stars as a function of C/O ratios and position.
C/O	Species	Position from 1 to 5 $R_{\star }$
0.98	CO, SiO, HCN, CS, H₂O, CO₂, SO, HS, S	any radius - similar to O-rich AGBs
1	CO, SiO, HCN, CS	any radius
	CO₂, SO, H₂O, OH, HS, S	present from 1 to 2,5 $R_{\star }$
	C₂H₂, SiS, Si	present after 3 $R_{\star }$
1.01	CO, SiO, HCN, CS, C₂H₂, SiS, Si	any radius - similar to C-rich AGBs

Source LaTeX | All tables | In the text