Velocity profiles of high-excitation molecular hydrogen lines

Details Velocity profiles of high-excitation molecular hydrogen lines Velocity profiles of high-excitation molecular hydrogen lines

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.242...88m&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 242, Jan. 1, 1990, p. 88-91.

Astronomy and Astrophysics

Astronomy

15

Molecular Excitation, Molecular Spectra, Orion Nebula, Velocity Distribution, Astronomical Spectroscopy, Fluorescence, Molecular Energy Levels, Photodissociation

Scientific paper

Profiles of three lines of molecular hydrogen near 2.2 microns, originating from widely spaced energy levels, have been measured at a resolution of 32 km/s at Peak 1 in the Orion molecular outflow. The three lines, 1 - 0 S(1), 2 - 1 S(1), and 3 - 2 S(3), are found to have identical profiles. This result rules out any significant contribution to the population of the higher energy levels of molecular hydrogen at Peak 1 by fluorescence, and is generally consistent with emission from multiple J-type shocks.

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