Markarian 315: A test case for the active galactic nucleus-merger hypothesis?

Details Markarian 315: A test case for the active galactic nucleus-merger hypothesis? Markarian 315: A test case for the active galactic nucleus-merger hypothesis?

Nov 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...435...71m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 435, no. 1, p. 71-78

Astronomy and Astrophysics

Astronomy

11

Active Galactic Nuclei, Galactic Evolution, Gas Dynamics, Interacting Galaxies, Interstellar Gas, Seyfert Galaxies, Spaceborne Astronomy, Visible Spectrum, Hubble Space Telescope, Ionized Gases, Kinematics

Scientific paper

Using the Hubble Space Telescope (HST) Wide Field/Planetary Camera, (WF/PC) we have detected a diffuse continuum knot in the inner regions of the Seyfert galaxy Markarian 315. This knot may be a remnant nucleus. It is associated with a complex, ringlike structure in both the continuum and ionized gas emission. We have measured the kinematics of the ionized gas in two position angles and find velocities which are consistent with a nonaxisymmetric gravitational disturbance. The galaxy is associated with an extended ionized filament, or tidal tail, and our measurements show that the ionized gas in this feature is redshifted by up to 500 km/s in the line of sight relative to the Seyfert nucleus. This combination of morphological and kinematic features suggests that Mrk 315 has suffered a disruptive, tidal interaction which has significantly influenced regions within 1 kpc of its nucleus.

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