Detection of the O I 11287 A line in the Seyfert 1 galaxy I ZW 1

Details Detection of the O I 11287 A line in the Seyfert 1 galaxy I ZW 1 Detection of the O I 11287 A line in the Seyfert 1 galaxy I ZW 1

Jul 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...342..235r&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 342, July 1, 1989, p. 235-237. Research supported by the Aerospace Corp.

Astronomy and Astrophysics

Astrophysics

8

Emission Spectra, Seyfert Galaxies, Electron Transitions, Lyman Beta Radiation, Oxygen, Quasars, Resonance Fluorescence

Scientific paper

This paper reports a detection of the infrared 11287 A transition of neutral oxygen in the Seyfert 1 galaxy I Zw 1. The observed strength of the feature is 6.5 x 10 to the -14th erg/sq cm sec. When this value is compared to the flux of O I 8446A measured by Persson and McGregor (1985), the ratio of the photon fluxes is unity, to within the measurement uncertainties. This is a direct confirmation that the broad permitted O I lines observed in Seyfert 1 galaxies and quasars arise through fluorescent excitation by Lyman Beta.

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