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

被引:0
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作者
Rossa, J
Dietrich, M
Wagner, SJ
机构
[1] Landessternwarte Heidelberg Konigstuhl, D-69117 Heidelberg, Germany
[2] Ruhr Univ Bochum, Astron Inst, D-44780 Bochum, Germany
关键词
galaxies : active; galaxies : Seyfert; galaxies : individual : NGC 1386; galaxies : kinematics and dynamics; galaxies : structure;
D O I
暂无
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
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 Angstrom which covers the H alpha and the [N II] 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 -120 +/- 10 km s(-1) with respect to the systemic velocity and shows an offset of approximate to -1."6 relative to the nucleus of the galaxy. The true nucleus of NGC 1386 has a much lower apparent Ha 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.
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页码:501 / 508
页数:8
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