3D spectroscopy of merger Seyfert galaxy Mrk 334: nuclear starburst, superwind and the circumnuclear cavern

Abstract

We are presenting new results on kinematics and structure of the Mrk 334 Seyfert galaxy. Panoramic (3D) spectroscopy is performed at the 6-m telescope of the Special Astrophysical Observatory of the Russian Academy of Sciences using the MPFS integral-field spectrograph and scanning Fabry--Perot interferometer. The deep images have revealed that Mrk 334 is observed during the final stage of its merging with a massive companion. A possible mass ratio ranges from 1/5 to 1/3. The merger has triggered mass redistribution in the disk resulting in an intensification of nuclear activity and in a burst of star formation in the inner region of the galaxy. The circumnuclear starburst is so intense that its contribution to the gas ionization exceeds that contribution of the AGN. We interpret the nuclear gas outflow with velocities of ~200 km/s as a galactic superwind that accompanies the violent star formation. This suggestion is consistent with the asymmetric X-ray brightness distribution in Mrk 334. The trajectory of the fragments of the disrupted satellite in the vicinity of the main galaxy nucleus can be traced. In the galaxy disk a cavern is found that is filled with a low-density ionized gas. We consider this region to be the place where the remnants of the companion have recently penetrated through the gaseous disk of the main galaxy.

13 pages, 13 figures, 2 table; accepted for publication by MNRAS

References in corpus (8)

• The MAPPINGS III Library of Fast Radiative Shock Models
• On the nature of Seyfert galaxies with high [OIII]5007 blueshifts
• Dissipation and Extra Light in Galactic Nuclei: I. Gas-Rich Merger Remnants
• The Host Galaxies of Narrow-Line Seyfert 1s: Nuclear Dust Morphology and Starburst Rings
• Interactions, star formation and AGN activity
• An Offset Seyfert 2 Nucleus in the Minor Merger System NGC 3341
• Numerical simulations on the relative importance of starbursts and AGN in ultra-luminous infrared galaxies
• The gas kinematics in Mrk 533 nucleus and circumnuclear region: a gaseous outflow

Cited by in corpus (10)

• Automatic Determination of Stellar Atmospheric Parameters and Construction of Stellar Spectral Templates of the Guoshoujing Telescope (LAMOST)
• Cold Molecular Gas in Merger Remnants: I. Formation of Molecular Gas Disks
• Massive black hole pairs in clumpy, self-gravitating circumnuclear disks: stochastic orbital decay
• Seyfert galaxies that are undergoing merging but appear non-interacting
• Scanning Fabry--Perot Interferometer of the 6-m SAO RAS Telescope
• Stars and ionized gas in S0 galaxy NGC 7743: an inclined large-scale gaseous disk
• 3D Spectroscopy of Local Luminous Compact Blue Galaxies: Kinematic Maps of a Sample of 22 Objects
• Ongoing Star Formation In AGN Host Galaxy Disks: A View From Core-collapse Supernovae
• A close look at the well-known Seyfert galaxy: extended emission filaments in Mrk6
• Internal Kinematics of the Seyfert Galaxy Mkn 938