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Astron. Astrophys. 324, 485-489 (1997)


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Figure-of-eight velocity curves: UGC 10205 *

J.C. Vega 1, E.M. Corsini 2, A. Pizzella 2 and F. Bertola 2

1 Telescopio Nazionale Galileo, Osservatorio Astronomico di Padova, vicolo dell'Osservatorio 5, I-35122 Padova, Italy
2 Dipartimento di Astronomia, Università di Padova, vicolo dell'Osservatorio 5, I-35122 Padova, Italy

Received 10 December 1996 / Accepted 6 February 1997

Abstract

We measured the velocity curve and the velocity dispersion profile of the ionized gas along the major axis of the edge-on galaxy UGC 10205. The observed kinematics extends up to about [FORMULA] from the nucleus. In the inner [FORMULA] of this early-type spiral three kinematically distinct gaseous components are present. We disentangle a fast-rotating and a slow-rotating component. They give to the UGC 10205 velocity curve a "figure-of-eight" appearance. A third velocity component is also detected on the southeast side of the galaxy. Possibly it is produced by gas in non-circular motions.

Key words: galaxies: individual: UGC 10205 – galaxies: kinematics and dynamics – galaxies: spiral – galaxies: structure

* Based on observations carried out at the INT operated on the island La Palma by the Royal Greenwich Observatory in the Spanish Observatorio del Roque de Los Muchachos of the Instituto de Astrofísica de Canarias, Tenerife, Spain.

Send offprint requests to: J.C. Vega, jvega@astrpd.pd.astro.it

© European Southern Observatory (ESO) 1997

Online publication: May 26, 1998

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