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Astron. Astrophys. 362, 501-508 (2000)

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Kinematics and morphology of the narrow-line region in the Seyfert galaxy NGC 1386 *

J. Rossa 1,2, M. Dietrich 1,3 and S.J. Wagner 1

1 Landessternwarte Heidelberg-Königstuhl, Königstuhl 12, 69117 Heidelberg, Germany
2 Astronomisches Institut der Ruhr-Universität Bochum, 44780 Bochum, Germany **
3 Department of Astronomy, University of Florida, 211 Bryant Space Center, Gainesville, FL 32611-2055, USA**

Received 29 March 2000 / Accepted 15 August 2000

Abstract

We present a high spatial and spectral resolution 2-D echelle spectrogram of the Narrow-Line Region in the Seyfert 2 galaxy NGC 1386. This Seyfert galaxy was observed with CASPEC in the wavelength range 5270-7725 Å which covers the H[FORMULA] and the [NII ] lines. With the use of spatially high resolved images taken with the WFPC2 aboard the Hubble Space Telescope we could identify individual components of the Narrow-Line Region in our spectra. A Gaussian decomposition of the spectra revealed 9 distinct emission-line complexes. The brightest component is blue-shifted by [FORMULA] with respect to the systemic velocity and shows an offset of [FORMULA] relative to the nucleus of the galaxy. The true nucleus of NGC 1386 has a much lower apparent H[FORMULA] luminosity than this component. The nucleus is probably highly absorbed. Although the majority of the Narrow-Line Region components follows a regular velocity field, we find evidence for a separate kinematic component. The Narrow-Line Region is aligned anti-parallel to the radio-jet which propagates from the center of NGC 1386 to the south.

Key words: galaxies: active – galaxies: Seyfert – galaxies: individual: NGC 1386 – galaxies: kinematics and dynamics – galaxies: structure

* Based on observations collected at the European Southern Observatory, La Silla, Chile
** Present address

Send offprint requests to: J. Rossa (jrossa@astro.ruhr-uni-bochum.de)

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© European Southern Observatory (ESO) 2000

Online publication: October 24, 2000
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