NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-19 T16:44:22 PDT
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For refcode 1990MNRAS.245..470B:
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Copyright by Royal Astronomical Society. 1990MNRAS.245..470B Profiles of emission lines in active galactic nuclei - III. Observations of H{alpha}, [N II] and [S II] profiles I. C. Busko and J. E. Steiner Department of Astrophysics, Institito de Pesquisas Espaciais, Caixa Postal 515 - 12201 - Sao Jose dos Campos - SP - Brazil Accepted 1990 March 9. Received 1990 February 19; in original form 1989 July 3 SUMMARY High-resolution (FWHM = 28 km s^-1^ observations of H{alpha}, [N II] {lambda}6548/6583 and [S II] {lambda}6717/6731 emission lines in several southern active galactic nuclei (AGN) are presented. Deblending of the H{alpha} + [N II] profiles was performed using, when available, the [O III] {lambda}5007 profile shape as a template. Line profile measurements, as well as line intensities, are tabulated. We found to be relatively common among the observed objects the existence of structure in the line cores, pointing to the complexity of the dynamics in the low-velocity emission region. Differences in profile shape and width amongst different lines are also common, indicating that often there is a superposition, on the spectrograph slit, of emission regions with different dynamics and excitation conditions. This superposition is quantified in the case of IC 5063. We found weak, broad H{alpha} emission in IC 5063 and IC 5135. In NGC 2992, we were unable to confirm the presence of a broad H{alpha} component with the same intensity as found by previous authors, which we ascribe to spectral resolution effects.
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