Unveiling the Narrow-Line Seyfert 1 Nature of Mrk 573 using near-Infrared spectroscopy

Abstract

In this letter we present clear evidence that Mrk 573 is an obscured Narrow-Line Seyfert 1 (NLSy1) and not an archetypal Seyfert 2, as it has been classified until now. Only three galaxies have been proposed as members of this class, prior to this work. Here we report near-infrared spectroscopic data taken with LIRIS on the 4.2 m William Herschel Telescope (WHT). Our high quality near-infrared nuclear spectrum in the 0.88-1.35 micron wavelength range shows the permitted O I 1.128,1.317 micron narrow lines, the Fe II 9200-Ålines and the Fe II 1-micron lines, together with a relatively broad component (~1700 km/s) of Paschen Beta. These features can originate only in an optically thick high density region, similar to those observed in the Broad Line Region (BLR).

12 pages, 4 figures, accepted for publication in ApJ Letters

References in corpus (6)

• Radiative Transfer Modeling of Three-Dimensional Clumpy AGN Tori and its Application to NGC 1068
• A 0.8-2.4 microns spectral atlas of Active Galactic Nuclei
• AGN dust tori at low and high luminosities
• Optical emission line properties of Narrow Line Seyfert 1s and comparison AGN
• The first detection of near-infrared CN bands in active galactic nuclei: signature of star formation
• The Narrow Line Region of the Seyfert 2 galaxy Mrk 78. An infrared view

Cited by in corpus (1)

• The Infrared Nuclear Emission of Seyfert Galaxies on Parsec Scales: Testing the Clumpy Torus models