Rotational Frequencies of Transition Metal Hydrides for Astrophysical Searches in the Far-Infrared
Abstract
Accurate frequencies for the lowest rotational transitions of five transition metal hydrides (CrH, FeH, CoH, NiH, and CuH) in their ground electronic states are reported to help the identification of these species in astrophysical sources from their far-infrared spectra. Accurate frequencies are determined in two ways: for CuH, by calculation from rotational constants determined from higher J transitions with an accuracy of 190 kHz; for the other species, by extrapolation to zero magnetic field from laser magnetic resonance spectra with an accuracy of 0.7 MHz.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- September 1993
- DOI:
- 10.1086/187012
- Bibcode:
- 1993ApJ...414L.125B
- Keywords:
-
- Electron Transitions;
- Far Infrared Radiation;
- Infrared Astronomy;
- Interstellar Matter;
- Metal Hydrides;
- Molecular Rotation;
- Ground State;
- Infrared Spectra;
- Magnetic Resonance;
- Molecular Energy Levels;
- Astrophysics;
- INFRARED: INTERSTELLAR: LINES;
- ISM: MOLECULES;
- LINE: IDENTIFICATION;
- MOLECULAR DATA