Stellar Velocity Field in the Central Region of NGC 1068

Details Stellar Velocity Field in the Central Region of NGC 1068 Stellar Velocity Field in the Central Region of NGC 1068

Feb 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997ap%26ss.248...43g&link_type=abstract

Astrophysics and Space Science, Volume 248, Issue 1-2, pp. 43-49

Astronomy and Astrophysics

Astrophysics

1

Scientific paper

We present the velocity field of the stars in the central 25″ × 22″ of NGC 1068 derived from 2-D spectroscopy of the Ca II triplet. A preliminary analysis provides evidence for two distinct stellar systems in the centre of NGC 1068. In the outer regions (say r > 10″), the mean stellar velocity field seems coupled to those of the ionized and molecular gas, indicating aproximately regular rotation with the kinematic minor axis at PA ~ 0°. However, in the inner region, the stars are rotating, whereas the ionized gas is outflowing in the NE-SW direction probably due to the effects of the nuclear activity, and the molecular gas is responding to the bar potential.

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