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Issue A&A
Volume 425, Number 1, October I 2004
Page(s) 99 - 108
Section Extragalactic astronomy
DOI http://dx.doi.org/10.1051/0004-6361:20040486



A&A 425, 99-108 (2004)
DOI: 10.1051/0004-6361:20040486

Milliarcsec-scale radio structure of a matched sample of Seyfert 1 and Seyfert 2 galaxies

D. V. Lal1, 2, P. Shastri1 and D. C. Gabuzda3

1  Indian Institute of Astrophysics, Koramangala, Bangalore 560 034, India
    e-mail: dharam@ncra.tifr.res.in
2  Department of Physics, Indian Institute of Science, Bangalore 560 012, India
3  Department of Physics, University College Cork, Cork, Republic of Ireland

(Received 21 March 2004 / Accepted 14 June 2004 )

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, $\lambda$ = 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 observed. In this paper we describe the observations and data reduction procedures, and present the VLBI radio images as well as simultaneous Very Large Array images that we obtained for these 15 Seyferts.


Key words: galaxies: Seyfert -- radio continuum: galaxies

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© ESO 2004

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