منابع مشابه
Low-Luminosity Seyfert Nuclei
We describe a new sample of Seyfert nuclei discovered during the course of an optical spectroscopic survey of nearby galaxies. The majority of the objects, many recognized for the first time, have luminosities much lower than those of classical Seyferts and populate the faint end of the AGN luminosity function. A significant fraction of the nuclei emit broad Hα emission qualitatively similar to...
متن کاملDusty Tori of Seyfert Nuclei
Dusty tori around active galactic nuclei (AGNs) play an important role in the classification of Seyfert galaxies. (Antonucci & Miller 1985; see also Antonucci 1993 for a review). Seyfert galaxies observed from a face-on view of the torus are recognized as type 1 Seyferts (S1s) while those observed from an edge-on view are recognized as type 2 Seyferts (S2s). Therefore, physical properties of du...
متن کاملRadio Variability in Seyfert Nuclei
C.G. Mundell, P. Ferruit, N. Nagar and A.S. Wilson 1 Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead, CH41 1LD, U.K: [email protected] 2 Observatoire de Lyon, 9 Avenue Charles André, Saint-Genis Laval Cedex, F69561, France 3 Astronomy Group, Departamento de F́ısica, Universidad de Concepción, Casilla 160-C, Concepción, Chile an...
متن کاملThe Stellar Populations of Seyfert 2 Nuclei
We present a preliminary analysis of the stellar populations in the central parsecs of a sample of 22 Seyfert 2 galaxies, based on a careful separation of nebular emission and stellar light in high-spatial resolution HST -STIS spectra. 10% of the surveyed nuclei display stellar populations of intermediate age, ∼1-2 Gyr old, whereas the remaining targets appear to be evenly split between objects...
متن کاملEmission Line Properties of Seyfert 2 Nuclei
This is the third paper of a series devoted to the study of the global properties of Joguet’s sample of 79 nearby galaxies observable from the southern hemisphere, of which 65 are Seyfert 2 galaxies. We use the population synthesis models of Paper II to derive ‘pure’ emission-line spectra for the Seyfert 2’s in the sample, and thus explore the statistical properties of the nuclear nebular compo...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1974
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/168.1.109