Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...353..445b&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 353, April 20, 1990, p. 445-451.
Astronomy and Astrophysics
Astronomy
16
Emission Spectra, Galactic Nuclei, Line Spectra, Seyfert Galaxies, Spectrum Analysis, Hot Stars, Radio Astronomy, Spectrophotometry, Star Distribution
Scientific paper
Spectrophotometric observations have been made of the nuclear and circumnuclear regions of the Seyfert 1 galaxy NGC 7469, and the dynamics and structure of the emission-line regions are analyzed. In the nuclear region of NGC 7469, a broad, an intermediate, and a narrow line-emitting region were found. The broad lines (FWHM 7800 km/s) are formed within a distance R equal to or less than 0.05 pc from the central source. For the narrow-line region, there is a large range in electron density and a scheme of ionization structure. The circumnuclear stellar population consists mostly of very old stars, and at a distance R = 8 arcsec from the nucleus, the presence of hot, young stars was detected. The gas at R = 8 arcsec is nitrogen overabundant.
Bonatto Charles J.
Pastoriza Miriani Griselda
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