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Table 3
Upper limit column densities (Ntot) for the 13C and deuterated isotopologues of CH3CCH, as well as the H2 abundance ratio, in IRAS 16293B and IRAS 16293A.
| Molecule | Ntot | Ntot |
|---|---|---|
| (cm−2) | N(H2) | |
| IRAS 16293A | ||
CH CCH |
<2.44 × 1014 | <3.87 × 10−11 |
| 13CH3CCH | <2.51 × 1014 | <3.98 × 10−11 |
| CH3C13CH | <2.51 × 1014 | <3.98 × 10−11 |
| CH3CCD | <7.91 × 1014 | <1.26 × 10−10 |
| CH2DCCH | <2.64 × 1014 | <4.19 × 10−11 |
| IRAS 16293B | ||
CH CCH |
<2.44 × 1014 | <2.03 × 10−11 |
| 13CH3CCH | <2.51 × 1014 | <2.09 × 10−11 |
| CH3C13CH | <2.51 × 1014 | <2.09 × 10−11 |
| CH3CCD | <7.91 × 1014 | <6.59 × 10−11 |
| CH2DCCH | <2.64 × 1014 | <2.20 × 10−11 |
Notes. The 3σ upper limits are determined using the excitation temperatures, FWHMs and H2 column densities given in Table 2 for each source.
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