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Date and Time of the Query: 2019-07-21 T15:25:51 PDT
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For refcode 1989ApJ...342..235R:
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Copyright by American Astronomical Society. Reproduced by permission
1989ApJ...342..235R DETECTION OF THE O I 11287 A LINE IN THE SEYFERT 1 GALAXY I Zw 1 RICHARD J. RUDY, GEORGE S. ROSSANO, AND R. C. PUETTER Space Sciences Laboratory, The Aerospace Corporation Received 1988 October 17; accepted 1988 December 6 ABSTRACT In this paper we report 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^-14^ ergs cm^-2^ s^-1^. When this value is compared to the flux of O I {lambda}8446 measured by Persson and McGregor, 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}. Subject headings: galaxies: individual (I Zwicky 1) - galaxies: Seyfert - radiation mechanisms
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