Table 2
Rotational temperature, column density, and relative abundance with respect to CH3 OH for the newlydetected species.
| Species | IRAS 16293 B | ||
|---|---|---|---|
| Trot (K) | Ntot (cm−2) | Ntot/ |
|
| t-C2H5OCH3 | 100 | 1.8 ± 0.2 × 1016 | 1.8 × 10−3 |
| CH3OCH2OH | 130 | 1.4 ± 0.2 × 1017 | 1.4 × 10−2 |
| CH3CDO (†) | 125 (⋆) | 7.4 ± 0.7 × 1015 | 7.4 × 10−4 |
| CH2DCHO (†) | 125 (⋆) | 6.2 ± 0.6 × 1015 | 6.2 × 10−4 |
| Species | IRAS 16293 A | ||
| Trot (K) | Ntot (cm−2) | Ntot/ |
|
| t-C2H5OCH3 | 100 (⋆⋆) | <2.7 × 1016 | <2.1 × 10−3 |
| CH3OCH2OH | 130 (⋆⋆) | <2.7 × 1017 | <2.1 × 10−2 |
| CH3CDO | 140 (⋆) | <6.0 × 1014 | <4.6 × 10−5 |
| CH2DCHO | 140 (⋆) | <6.0 × 1014 | <4.6 × 10−5 |
Notes. (†) CH2DCHO and CH3CDO were initially reported in Coudert et al. (2019). (⋆)The rotational temperature is assumed to be the same as the main isotopologue, which is 100 and 125 K for IRAS 16293 A and IRAS 16293 B, respectively (Lykke et al. 2017). (⋆⋆)The rotational temperature did not converge; the same value as IRAS 16293 B is assumed.
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