NITROGEN SULFIDE IN QUIESCENT DARK CLOUDS
Publication Date
1994
Journal or Book Title
ASTROPHYSICAL JOURNAL
Abstract
We report the first detection of interstellar nitrogen sulfide (NS) in cold dark clouds. Several components of the (2)Pi1/2, J = 3/2 to 1/2 and J = 5/2 to 3/2 transitions were observed in TMC-1 and L134N. The inferred column density for TMC-1 is NNS approximately 8 x 1012/sq cm toward the NH3 peak in that cloud, and in L134N is NNS approximately 3 x 1012/sq cm toward the position of peak NH3 emission. These values correspond to fractional abundances relative to molecular hydrogen of fNS approximately 8 x 10-10 for TMC-1, and fNS approximately 6 x 10-10 for L134N. The NS emission is extended along the TMC-1 ridge and is also extended in L134N. The measured abundances are significantly higher than those predicted by some recent gas phase ion-molecule models.
DOI
https://doi.org/10.1016/S0273-1177(99)80061-1
Pages
621-625
Volume
422
Issue
2
Recommended Citation
MCGONAGLE, D; Irvine, William M.; and OHISHI, M, "NITROGEN SULFIDE IN QUIESCENT DARK CLOUDS" (1994). ASTROPHYSICAL JOURNAL. 226.
https://doi.org/10.1016/S0273-1177(99)80061-1
Comments
The published version is located at http://adsabs.harvard.edu/full/1994ApJ...422..621M