NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-17 T06:36:39 PDT
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For refcode 1989MNRAS.238.1479B:
Retrieve 80 NED objects in this reference.
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NED Abstract

Copyright by Royal Astronomical Society. 1989MNRAS.238.1479B Profiles of emission lines in AGN - II. Analysis of a sample of [O III] profiles I. C. Busko and J. E. Steiner Department of Astrophysics, MCT/Instituto de Pesquias Espaclais Caixa Postal 515-12201, Sao Jose dos Campos SP, Brazil Accepted 1989 January 6. Received 1988 October 20 Summary. Statistical analysis of a sample of active galactic nuclei (AGN) [O III] {lambda}5007 high-resolution (FWHM<~ 130 km s^-1^) line profiles, complemented with other observational information, showed that line kurtosis correlates with narrow-line Balmer decrement, indicating that there is dust inside the narrow-line region. The dust affects preferentially the low-velocity emitting regions. Line kurtosis depends also on radio luminosity and presence of a broad-line region. The analysis shows a correlation between line FWHM and host galaxy inclination, pointing to the planar and aligned nature of the narrow-line region velocity field. Radio-quiet objects showed a good correlation between line FWHM and optical/radio luminosity. No correlation was found on the radio-loud ones, indicating that probably different mechanisms are at play in these two classes of objects. Late-type spirals showed, on the mean, lines with narrower FWHM than early-type ones. The effect is measurable, however, only on the low-velocity emitting regions, indicating that the velocity field in these regions may be shaped by the galaxy-bulge gravitational field. Line asymmetry does not appear to be a good diagnostic tool for probing the velocity field. About 23 per cent of the radio-quiet objects showed lines with red asymmetry.
Retrieve 80 NED objects in this reference.
Please click here for ADS abstract

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