The nuclear region of NGC 7469

Journal Article · Sun Apr 01 04:00:00 EDT 1990 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/168632· OSTI ID:7041024

Bonatto, C J; Pastoriza, M G ^[1]

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1. Rio Grande do Sul Universidade Federal, Porto Alegre (Brazil)

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. 30 refs.

• OSTI ID: 7041024
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 353; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ASTRONOMY
CHEMICAL COMPOSITION
DYNAMICS
ELECTRON DENSITY
ELEMENTS
EMISSION SPECTRA
GALAXIES
GALAXY NUCLEI
IONIZATION
MECHANICS
MORPHOLOGY
NITROGEN
NONMETALS
RADIOASTRONOMY
SEYFERT GALAXIES
SPECTRA
SPECTROPHOTOMETRY