SIMBAD references

2004ApJ...606L.127V - Astrophys. J., 606, L127-L130 (2004/May-2)

Detection of D2H+ in the dense interstellar medium.


Abstract (from CDS):

The 692 GHz para ground-state line of D2H+ has been detected at the Caltech Submillimeter Observatory toward the prestellar core 16293E. The derived D2H+ abundance is comparable to that of H2D+, as determined by observations of the 372 GHz line of ortho-H2D+. This is an observational verification of recent theoretical predictions, developed to explain the large deuteration ratios observed in cold, high-density regions of the interstellar medium associated with low-mass prestellar cores and protostars. This detection confirms expectations that the multiply deuterated forms of H+3were missing factors of earlier models. The inclusion of D2H+ and D+3 in the models leads to predictions of higher values of the D/H ratio in the gas phase.

Abstract Copyright:

Journal keyword(s): ISM: Abundances - ISM: Clouds - ISM: Molecules - Molecular Data - Molecular Processes - Radio Lines: ISM

CDS comments: 16293E = NAME IRAS 16293E

Simbad objects: 7

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