Table 5: Abundances of SO, SO2, H2S, SiO and H2CO with respect to H2 in the hot core of IRAS 16293. The abundances of SO, SO2 and H2S are estimated by the present work observations, assuming a H2 column density of $7.5 \times 10^{22}~\rm cm^{-2}$ (Ceccarelli et al. 2000a). The SiO and H2CO abundances are taken from Ceccarelli et al. (2000a,b). References of the other sources: L1157-mm (IRAS  20386+6751): Bachiller & Perez Gutierrez (1997); Orion-KL: SO, SO2, SiO and H2CO from Sutton et al. (1995), H2S from Minh et al. (1990); G10.47, G29.96, G75.78, G9.62, G12.21, G31.41 and G34.26: Hatchell et al. (1998); BF-Class 0: Buckle & Fuller (2003).
  SO/H2 SO2/H2 H2S/H2 SiO/H2 H2CO/H2
IRAS 16293 $1.7 \times 10^{-6}$ $5.4 \times 10^{-7}$ $5.3 \times 10^{-7}$ $1.5 \times 10^{-8}$ $1.0 \times 10^{-7}$
L1157-mm $5.0 \times 10^{-9}$ $3.0 \times 10^{-8}$ $1.1 \times 10^{-8}$ - $4{-}6 \times 10^{-9}$
Orion-KL $1.5 \times 10^{-7}$ $9.4 \times 10^{-8}$ $5.0 \times 10^{-6}$ $6.0 \times 10^{-9}$ $7.0 \times 10^{-9}$
G10.47 $3.0 \times 10^{-9}$ $1.8 \times 10^{-8}$ $\ge$ $4.0 \times 10^{-9}$ - -
G29.96 $\ge$ $5.0 \times 10^{-9}$ $2.0 \times 10^{-8}$ $\ge$ $1.5 \times 10^{-8}$ - -
G75.78 $3.0 \times 10^{-9}$ $\ge$ $2.0 \times 10^{-9}$ $\ge$ $1.0 \times 10^{-9}$ - -
G9.62 $\ge$ $4.0 \times 10^{-9}$ $1.0 \times 10^{-8}$ $\ge$ $8.0 \times 10^{-9}$ - -
G12.21 $\ge$ $8.0 \times 10^{-10}$ $\ge$ $5.0 \times 10^{-10}$ - - -
G31.41 $4.0 \times 10^{-9}$ $1.2 \times 10^{-8}$ $\ge$ $3.0 \times 10^{-9}$ - -
G34.26 $6.0 \times 10^{-9}$ $1.5 \times 10^{-8}$ $\ge$ $2.0 \times 10^{-9}$ - -
BF-Class 0 $3.0 \times 10^{-9}$ $4.0 \times 10^{-10}$ $2.0 \times 10^{-9}$ - -


Source LaTeX | All tables | In the text