Detection of molecular hydrogen emission from five planetary nebulae

Details Detection of molecular hydrogen emission from five planetary nebulae Detection of molecular hydrogen emission from five planetary nebulae

Jan 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...219l..33b&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 219, Jan. 1, 1978, p. L33-L35, L37, L38.

Astronomy and Astrophysics

Astrophysics

107

Astronomical Spectroscopy, Emission Spectra, Hydrogen, Planetary Nebulae, Astronomical Maps, Brightness Temperature, H Gamma Line, Hydrogen Atoms

Scientific paper

The v = 1 to 0 S(1) line of molecular hydrogen has been detected in five planetary nebulae. They are the Ring Nebula (M57, NGC 6720), BD+30 deg 3639, Hb 12, CRL 618, and CRL 2688. A region in the northeast of the Ring Nebula has been mapped in both the v = 1 to 0 S(1) molecular hydrogen line and the Brackett gamma line of atomic hydrogen. The H2 emission is not spatially correlated with the B-gamma, but is correlated with the (OI) emission as determined from interference filter photographs.

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