Masaq Index
arXiv 1996-07-13 0 views

Interstellar ³⁶S: a probe of s-process nucleosynthesis

Mauersberger, R. · Henkel, C. · Langer, N. · Chin, Y. -N.

Original · EN

The first detection of a ³⁶S-bearing molecule in interstellar space is reported. The J=2-1 and 3-2 transitions of C³⁶S have been observed toward eight Galactic molecular hot cores. From a comparison with other optically thin isotopic species of CS, the abundance ratio of ³⁴S/³⁶S is 115(± 17). This is smaller than the solar system ratio of 200 and supports the idea that ³⁶S is, unlike the other stable sulfur isotopes, a purely secondary nucleus that is produced by s-process nucleosynthesis in massive stars.

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