Bibcode
García-Lorenzo, B.; Arribas, S.; Mediavilla, E.
Bibliographical reference
Astronomy and Astrophysics, v.378, p.787-799 (2001)
Advertised on:
11
2001
Journal
Citations
21
Refereed citations
20
Description
Integral field spectroscopy in the central 16''x 12'' (2.4 kpc x 1.8
kpc, if H0 = 75 km s-1 Mpc-1) of the
Seyfert 1.9 galaxy NGC 2992 has been obtained using
the fibre system INTEGRAL. The data are mainly used to study the stellar
and ionized gas kinematics. In spite of the photometric disruptions in
the outer parts (r > 6 kpc) produced by the interaction with its
close companion (NGC 2993), the present stellar velocity field shows
regular rotation. The ionized gas presents several kinematically
distinct components. Apart from the outflowing component already
reported by other authors, we found an additional (high ionization)
kinematic component which seems to be associated with the boundaries of
the figure-of-eight-shaped emission detected in the 6 cm radio map. We
locate the hidden nucleus in the apex of the biconical structure defined
by the [O iii] emission, coincident with the outflow origin and with the
center of the dust lane. We do not find any clear evidence of direct
influence of the interaction in the kinematics of the stars or the
ionized gas in the circumnuclear region of NGC 2992.