Luminous molecular hydrogen emission in the galaxy system NGC 3690-IC 694

Details Luminous molecular hydrogen emission in the galaxy system NGC 3690-IC 694 Luminous molecular hydrogen emission in the galaxy system NGC 3690-IC 694

Oct 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...273l..27f&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 273, Oct. 1, 1983, p. L27-L30.

Astronomy and Astrophysics

Astronomy

36

Galaxies, Hydrogen Clouds, Infrared Astronomy, Molecular Clouds, Stellar Evolution, Infrared Spectra, Luminosity, Mass Distribution, Photoionization, Shock Heating, Vibrational Spectra

Scientific paper

The detection of line emission of vibrationally excited H2 from the galaxy system NGC 3690-IC 694 is reported. The line emission is distributed within the system. The total observed luminosity in the H2(v) = 1-0 S(1) line alone is approximately 1.5 x 10 to the 7th solar luminosities. Also detected was Br-gamma line emission of the system; its observed luminosity indicates that at least 4 x 10 to the 54th ionizing photons/second are required to maintain ionization of the H II. The H2 is probably heated by shocks, and the mass of hot H2 exceeds 20,000 solar masses.

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