Laboratory measurements for the astrophysical identification of MgH

A tunable far-infrared spectrometer has been used to observe the pure rotational spectrum of MgH in a DC discharge of H2 with magnesium. The frequencies of the hyperfine components of the N = 1 - 0 transition are predicted to an estimated accuracy of + or - 350 kHz, which should be sufficient for th...

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Veröffentlicht in:	The Astrophysical journal 1990-08, Vol.359 (2), p.L65-L66
Hauptverfasser:	Zink, L. R., Jennings, D. A., Evenson, K. M., Leopold, K. R.
Format:	Artikel
Sprache:	eng
Schlagworte:	640100 - Astrophysics & Cosmology ALKALINE EARTH METAL COMPOUNDS ALKALINE EARTH METALS Astronomy ASTROPHYSICS Atomic processes and interactions CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS Earth, ocean, space ELECTROMAGNETIC RADIATION ELEMENTS ENERGY-LEVEL TRANSITIONS Exact sciences and technology FAR INFRARED RADIATION Fundamental aspects of astrophysics Fundamental astronomy and astrophysics. Instrumentation, techniques, and astronomical observations HYDRIDES HYDROGEN HYDROGEN COMPOUNDS IDENTIFICATION SYSTEMS INFRARED RADIATION INFRARED SPECTRA INFRARED SPECTROMETERS INTERSTELLAR SPACE LABORATORIES MAGNESIUM MAGNESIUM COMPOUNDS MAGNESIUM HYDRIDES MEASURING INSTRUMENTS METALS NONMETALS RADIATIONS SPACE SPECTRA SPECTROMETERS
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Beschreibung
Zusammenfassung:	A tunable far-infrared spectrometer has been used to observe the pure rotational spectrum of MgH in a DC discharge of H2 with magnesium. The frequencies of the hyperfine components of the N = 1 - 0 transition are predicted to an estimated accuracy of + or - 350 kHz, which should be sufficient for the astrophysical identification of this species.
ISSN:	0004-637X 1538-4357
DOI:	10.1086/185796