Detection of strong carbon monoxide emission from the host galaxy of the quasar I ZW 1

Details Detection of strong carbon monoxide emission from the host galaxy of the quasar I ZW 1 Detection of strong carbon monoxide emission from the host galaxy of the quasar I ZW 1

Feb 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...337l..69b&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 337, Feb. 15, 1989, p. L69-L72.

Astronomy and Astrophysics

Astronomy

64

Carbon Monoxide, Galactic Radiation, Infrared Sources (Astronomy), Quasars, Disk Galaxies, Far Infrared Radiation, Luminosity, Molecular Clouds

Scientific paper

The radio-quiet quasar I Zw 1 has been observed in the J = 1-0 and J = 2-1 lines of CO and clear detections in both transitions have been obtained. The J = 1-0 appears much more luminous than the J = 2-1 line. If the CO is optically thick and thermalized, the emission must originate through the host galaxy's disk. This is substantiated by the CO profile shape. A plot of CO luminosity versus far-IR luminosity supports the hypothesis that the far-IR emission in I Zw 1 is thermal. The results indicate that the far-IR may be dominated by dust emission.

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