A search with Copernicus for interstellar N2 in diffuse clouds

Details A search with Copernicus for interstellar N2 in diffuse clouds A search with Copernicus for interstellar N2 in diffuse clouds

Jan 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...227..159l&link_type=abstract

Astrophysical Journal, Part 1, vol. 227, Jan. 1, 1979, p. 159-162.

Physics

Nuclear Physics

7

Abundance, Interstellar Chemistry, Interstellar Gas, Nitrogen, Oao 3, Hydrogen, Nuclei (Nuclear Physics), Satellite Observation, Spectral Bands

Scientific paper

Multiple Copernicus scans of two N2 band regions (near 958.5 and 960.2A) of Delta Sco and Epsilon Per are reported. The observations indicate upper limits for the number of N2 molecules equal to 1.0-3.8 times 10 to the -12th/sq cm and 1.2-4.4 times 10 to the -12th/sq cm, respectively; the limits depend on the cloud temperature. It is suggested that the limits are consistent with the column densities predicted by chemical models for diffuse interstellar clouds, and the predicted relative abundances are presented in terms of the ratio of N(N2)/(2N(H2) + N(Hl)).

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