Millimeter and submillimeter rest frequencies for the MgF radical

M. A. Anderson, M. D. Allen, Lucy M Ziurys

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The pure rotational spectrum of the MgF radical in its ground X 2Σ++ electronic state has been observed in the laboratory using millimeter/submillimeter direct absorption spectroscopy. Rotational transitions arising from the υ = 0, 1, 2, and 3 vibrational modes of the main magnesium isotopic species, 24MgF, have been recorded, as well as those arising from the υ = 0 state of the 25Mg and 26Mg isotopomers. Rotational and fine-structure constants have been determined for these molecules, as well as hyperfine parameters for both the 19F (I = 1/2) and 25Mg (I = 5/2) nuclei. The rest frequencies presented here for MgF have an estimated accuracy of ±200 kHz, and will enable astronomical searches to be carried out for this fluoride radical. Magnesium fluoride may be present in the late-type carbon star IRC + 10216, where AlF appears to be abundant.

Original languageEnglish (US)
JournalAstrophysical Journal
Volume425
Issue number1 PART 2
StatePublished - Apr 10 1994
Externally publishedYes

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fluoride
magnesium
magnesium fluorides
carbon stars
rotational spectra
atomic absorption spectroscopy
fluorides
vibration mode
absorption spectroscopy
fine structure
nuclei
carbon
electronics
molecules
laboratory
parameter

Keywords

  • ISM: molecules
  • Line: identification
  • Molecular data

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Millimeter and submillimeter rest frequencies for the MgF radical. / Anderson, M. A.; Allen, M. D.; Ziurys, Lucy M.

In: Astrophysical Journal, Vol. 425, No. 1 PART 2, 10.04.1994.

Research output: Contribution to journalArticle

Anderson, M. A. ; Allen, M. D. ; Ziurys, Lucy M. / Millimeter and submillimeter rest frequencies for the MgF radical. In: Astrophysical Journal. 1994 ; Vol. 425, No. 1 PART 2.
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