A search for O2 toward NGC 7674

Details A search for O2 toward NGC 7674 A search for O2 toward NGC 7674

Nov 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...298..281l&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 298, Nov. 1, 1985, p. 281, 282.

Astronomy and Astrophysics

Astrophysics

17

Abundance, Interstellar Gas, Molecular Spectra, Oxygen Spectra, Seyfert Galaxies, Carbon Monoxide, Hydrogen

Scientific paper

A study seeking to detect molecular oxygen in the direction of the distant Seyfert galaxy NGC 7674 is recounted. At the velocity of this galaxy, the 118.75-GHz ground state O2 transition is redshifted to 115.42 GHz and can be examined without undue telluric interference. Toward this source, the ratio of integrated intensity in the CO j = 1-0 line to that in O2 is 23:1 at the 1 sigma level. If the integrated CO intensity can be converted to a mass of molecular hydrogen as in the Milky Way disk and the O2 level population is characterized by a single temperature T, the O2/H2 ratio is less than or equal to 1.4 x 10 to the -5 (T/50 K).

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