Detection of nitric oxide in the dark cloud L134N

D. McGonagle, Lucy M Ziurys, W. M. Irvine, Y. C. Minh

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

We report the first detection of interstellar nitric oxide (NO) in a cold dark cloud, L134N. Nitric oxide was observed by means of its two 2Π1/2, J = 3/2 → 1/2, rotational transitions at 150.2 and 150.5 GHz, which occur because of Λ-doubling. The inferred column density for L134N is NNO ∼ 5 × 1014 cm-2 toward the SO peak in that cloud. This value corresponds to a fractional abundance relative to molecular hydrogen of fN0 ∼ 6 × 10-8 and is in good agreement with predictions of quiescent cloud ion-molecule chemistry. NO was not detected toward the dark cloud TMC-1 at an upper limit of fNO ≤ 3 ×10-8.

Original languageEnglish (US)
Pages (from-to)121-124
Number of pages4
JournalAstrophysical Journal
Volume359
Issue number1
StatePublished - Aug 10 1990
Externally publishedYes

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nitric oxide
relative abundance
hydrogen
chemistry
detection
ion
prediction
predictions
molecules
ions

Keywords

  • Interstellar: molecules
  • Nebulae: abundances

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

McGonagle, D., Ziurys, L. M., Irvine, W. M., & Minh, Y. C. (1990). Detection of nitric oxide in the dark cloud L134N. Astrophysical Journal, 359(1), 121-124.

Detection of nitric oxide in the dark cloud L134N. / McGonagle, D.; Ziurys, Lucy M; Irvine, W. M.; Minh, Y. C.

In: Astrophysical Journal, Vol. 359, No. 1, 10.08.1990, p. 121-124.

Research output: Contribution to journalArticle

McGonagle, D, Ziurys, LM, Irvine, WM & Minh, YC 1990, 'Detection of nitric oxide in the dark cloud L134N', Astrophysical Journal, vol. 359, no. 1, pp. 121-124.
McGonagle D, Ziurys LM, Irvine WM, Minh YC. Detection of nitric oxide in the dark cloud L134N. Astrophysical Journal. 1990 Aug 10;359(1):121-124.
McGonagle, D. ; Ziurys, Lucy M ; Irvine, W. M. ; Minh, Y. C. / Detection of nitric oxide in the dark cloud L134N. In: Astrophysical Journal. 1990 ; Vol. 359, No. 1. pp. 121-124.
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