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

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 <sup>1

1</sup> 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 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 with respect to the systemic velocity and shows an offset of relative to the nucleus of the galaxy. The true nucleus of NGC 1386 has a much lower apparent H 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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Contents

• 1. Introduction
  • 1.1. NGC 1386
• 2. Observations and data reduction
  • 2.1. Echelle spectroscopy
  • 2.2. Imaging
• 3. Analysis
• 4. Results
  • 4.1. Kinematics
  • 4.2. Morphology of the NLR
  • 4.3. Identification of individual NLR components
• 5. Discussion
• 6. Summary and conclusions
• Acknowledgements
• References

© European Southern Observatory (ESO) 2000

Online publication: October 24, 2000
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