Strong molecular hydrogen emission from the low-luminosity nucleus of M51

Details Strong molecular hydrogen emission from the low-luminosity nucleus of M51 Strong molecular hydrogen emission from the low-luminosity nucleus of M51

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...348l..49l&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 348, Jan. 10, 1990, p. L49-L51.

Astronomy and Astrophysics

Astrophysics

2

Active Galactic Nuclei, Hydrogen Recombinations, Infrared Spectra, Interstellar Gas, Seyfert Galaxies, Emission Spectra, Line Spectra, Luminosity, Starburst Galaxies

Scientific paper

The low-luminosity active nucleus of M51 is shown to be a strong source of emission in the 1-0 S (1) line of H2. The emission appears to be extended on a scale of 200 pc. On the basis of the strength of this line relative to Brackett-gamma, it can be argued that the emission is produced in gas that is shocked, possibly by outflows from this low-luminosity Seyfert-like nucleus. Previously, a large H2 1-0 S(1)/Brackett-gamma ratio was a characteristic seen only in high-luminosity nuclei.

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