A kinematic signature of bipolar flow in the Seyfert galaxy NGC 3516

Details A kinematic signature of bipolar flow in the Seyfert galaxy NGC 3516 A kinematic signature of bipolar flow in the Seyfert galaxy NGC 3516

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987aj.....94..640g&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 94, Sept. 1987, p. 640-643.

Astronomy and Astrophysics

Astronomy

28

Bipolarity, Emission Spectra, Galactic Nuclei, Gas Flow, Line Spectra, Seyfert Galaxies, Astronomical Models, Gas Dynamics, Radial Velocity

Scientific paper

A long-slit echellogram of the circumnuclear emission-line region in the Seyfert 1 galaxy NGC 3516 reveals an unusual velocity field in the ionized gas. The radial velocities decline outward, from offsets of a few hundred km s-1 back toward the systemic velocity, over distances of ≡500 pc on both sides of the nucleus. This gas has "nuclear" emission-line ratios. Circumnuclear gas kinematics in NGC 3516 are most simply modeled by a low-velocity, bipolar outflow from the nucleus. The bipolar-flow model is discussed in terms of observable properties of active galactic nuclei.

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