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2009MNRAS.395..692S - Mon. Not. R. Astron. Soc., 395, 692-718 (2009/May-2)
The kinematics of the Seyfert 2 galaxy NGC5728 circumnuclear region.
SON D.-H., HYUNG S., FERRUIT P., PECONTAL E. and LEE W.-B.
Abstract (from CDS):
We used the [Oiii]5007 line profiles for a detailed analysis of kinematics in the circumnuclear region of the NGC5728. The [Oiii]5007 line profiles reveal distinct kinematical structures. (1) The strongest component of Doppler peaks: two core components, consisting of the receding main C-core and the approaching NW-core with the radial velocities, Vr≃ +250 and -240 (or -250)km/s, respectively. These two cores consist of a roughly spherically symmetric distribution of the gas with radii of r ∼ 1.0arcsec (at Vr≃ +240km/s) and 0.9arcsec (at Vr≃ -240km/s), respectively. Hints of the presence of inflows around these cores are observed. (2) The next strong line profile component: this component corresponds to the bipolar cone aligned PA ∼ 123°. (3) The reverse S-shaped kinematical boundary which runs through the double-peaked zone of 6-7arcsec long in the galactic major axis direction is likely to be caused by a combination of the disc rotation of the host galaxy and the revolution of the two central cores.
Abstract Copyright: © 2009 The Authors. Journal compilation © 2009 RAS
Journal keyword(s): galaxies: individual: NGC5728 - galaxies: kinematics and dynamics - galaxies: nuclei - quasars: emission lines - galaxies: Seyfert
Simbad objects: 4
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