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Astron. Astrophys. 333, 459-465 (1998)

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A kinematical analysis of NGC 2992 *

I. Márquez 1, 2, C. Boisson 3, F. Durret 2, 3 and P. Petitjean 2, 3

1 Instituto de Astrofísica de Andalucía (C.S.I.C.), Apartado 3004, E-18080 Granada, Spain
2 Institut d'Astrophysique de Paris, CNRS, Université Pierre et Marie Curie, 98 bis Bd Arago, F-75014 Paris, France
3 DAEC, Observatoire de Paris, Université Paris VII, CNRS (UA 173), F-92195 Meudon Cedex, France

Received 14 July 1997 / Accepted 20 January 1998

Abstract

We present long slit spectroscopy for the [OIII] and H [FORMULA] wavelength ranges along nine different position angles for the Sa Seyfert 1.9 galaxy NGC 2992. Double profiles are present in several regions, suggesting that the gas is not simply following galaxy rotation. A simple kinematical model, which takes into account circular rotation together with a constant radial outflow, seems to be a good approximation to account for the observed kinematics.

Key words: galaxies: active – galaxies: individual: NGC 2992 – galaxies: kinematics and dynamics – galaxies: Seyfert – galaxies: spiral

* Based on data obtained at the European Southern Observatory, La Silla, Chile

Send offprint requests to: I. Márquez, IAA, Spain

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© European Southern Observatory (ESO) 1998

Online publication: April 20, 1998
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