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Markarian 348: a tidally disturbed seyfert galaxy
Science (New York, N.Y.)
|March 13, 1987
Summary
Markarian 348, a giant spiral galaxy, shows evidence of tidal disruption from combined optical and radio imaging. This study demonstrates extensive tidal perturbation in an active galactic nucleus.
Area of Science:
- Astronomy and Astrophysics
- Galactic Dynamics
- Galaxy Evolution
Background:
- Combined optical and radio imaging offers insights into galaxy properties.
- Markarian 348 is classified as a type 2 Seyfert galaxy.
Purpose of the Study:
- To investigate the size, mass, and evolutionary state of Markarian 348.
- To determine if Markarian 348 has undergone tidal disruption.
Main Methods:
- Acquisition and analysis of deep optical and neutral hydrogen images.
- Measurement of neutral hydrogen velocity field and spiral structure.
- Detection of optical features indicative of tidal disruption.
Main Results:
- Markarian 348 identified as a gigantic spiral galaxy, potentially the largest known non-cluster galaxy.
- Evidence of tidal disruption confirmed through velocity field, spiral structure, and tidal plume.
- Mass-to-light ratio within 130 kiloparsecs is comparable to similar active galaxies.
Conclusions:
- Detailed velocity measurements confirm extensive tidal perturbation in Markarian 348.
- The study provides a rare case of demonstrated tidal disruption in an active galactic nucleus.
- Findings contribute to understanding galaxy interactions and evolution.
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