SEYFERT GALAXIES: NUCLEAR RADIO STRUCTURE AND UNIFICATION
نویسندگان
چکیده
منابع مشابه
Seyfert Galaxies: Nuclear Radio Structure and Unification
We have observed a sample of Seyfert (Sy) galaxies with the global Very Long Baseline Interferometry (VLBI) to test the predictions of the unification scheme for the Sy galaxies which hypothesises that Sys of Type 1 and of Type 2 constitute a single population of objects. If Sy 1 and Sy 2 galaxies differ only in the orientation of the axisymmmetric active nucleus with respect to the observer, t...
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Using recent high–resolution (<0.1”) radio observations of a large sample of Seyfert galaxies (Roy et al., 1994), we analyze the relations between their compact radio core emission and several nuclear and host galaxy properties (galaxy morphology, optical, infrared, X-ray, extended radio emissions, interaction parameters, and some emission line properties). We apply survival analysis techniques...
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Abstract. We have obtained mas-scale resolution very long baseline interferometry (VLBI) images of a sample of Seyfert 1 and Seyfert 2 galaxies at 5 GHz (wavelength, λ = 6 cm). The Seyferts of the two types were chosen to be matched in several orientation-independent properties, primarily in order to rigorously test predictions of the unified scheme. We detected all the 15 objects that we obser...
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Active galaxies are often associated with starbursts, which are possible sources of fuelling for the nuclear black holes. By means of optical (3500 − 7500 Å) spectroscopic and narrow-band photometric data (Hα + [NII]λ6548,6583 and [OIII]λ5007) it is possible to detect starburst features in active nuclei and to study the correlation with Seyfert type and the surrounding environment. Here we pres...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2011
ISSN: 0004-637X,1538-4357
DOI: 10.1088/0004-637x/731/1/68