October 2008

Dicarbon Sulfide

The linear triatomic species dicarbon sulfide (C2S) was identified in 1987 in the interstellar cloud TMC-1 by Saito et al. and in the circumstellar shell IRC +10216 by Cernicharo et al. It was suggested by Velusamy et al. that the presence of C2S in protostellar objects might indicate that they are very young, but later work by Lai & Crutcher and de Gregorio-Monsalvo et al. concluded that most YSOs do not exhibit the molecule.

C2S is too unstable to exist on earth outside of a laboratory. It is related to another observed astromolecule, C2O.

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