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Integral Field Spectrography of the double AGN merging system Markarian 463

Published online by Cambridge University Press:  12 April 2016

E. Chatzichristou
E. Chatzichristou*
Affiliation:
Sterrewacht Leiden, P.B. 9513, 2300 RA Leiden, The Netherlands European Southern Observatory, La Silla, Chile

Abstract

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Markarian 463, a system of 2 interacting/merging galaxies (E and W) has been observed with SILFID at CFHT in sub-arcsec resolution conditions. We found that both nuclei are AGNs, with the W component being a Sy 2 or LINER and the E component, hitherto known to be a “hidden” Seyfert 1, having essentially Sy 2 characteristics. The bipolar collimated emission originating from the E nucleus is a conspicuous feature in the [OIII]5007 and Hα reconstructed images, as well as in the V – R color map. In velocity maps some previously undetected kinematical features are detected, most notably a sharp velocity gradient (more than 300 km s−1) within 2″ NE of the E nucleus. In addition, in the direct imaging mode a bright optical jet extending ~ 1.2″ S from the E nucleus and a fuzzy blue component 0.8″ W of the W nucleus were seen. Both were also discovered on HST images. Detailed ionization maps reveal individual regions with distinct physical conditions, which constrain the mechanism(s) responsible for the ionization of the gas.

Type
3. Integral Field Spectrographs and Spectrometers
Information
International Astronomical Union Colloquium , Volume 149: Tridimensional Optical Spectroscopic Methods in Astrophysics , 1995 , pp. 229 - 234
Copyright
Copyright © Astronomical Society of the Pacific 1995

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