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OASIS Spectral Images of the Seyfert galaxy NGC 5728  

Hyung, Siek (School of Science Education, Chungbuk National University)
Son, Dong-Hoon (Department of Astronomy and Space Science, Kyunghee University)
Ferruit, Pierre (CRAL-Observatoire de Lyon)
Lee, Woo-Baik (Korea Astronomy and Space Science Institute)
Publication Information
Journal of the Korean earth science society / v.27, no.5, 2006 , pp. 569-578 More about this Journal
Abstract
The distribution and kinematic information of the continuum, $H{\alpha},\;H{\beta}$, [O III], & [N II] images based on spectroscopic data secured with the OASIS at the Hawaii CFHT 3.6m telescope have been analyzed to study the physical characteristics of NGC 5728. The three bright regions-northwestern knot, southeastern knot, and the nucleus-exist within a $15"{\times}12"$ sky area which seem to indicate gas flows along the northwestern or western direction from the nucleus. We find that the center of a 10" diameter ring is at the northwestern knot, not at the galactic center. To further analyze the formation mechanism of such a ring, the kinematics of the nucleus and knot have been studied and the central structure of the Active Galactic Nuclei has been investigated by comparing various emission images.
Keywords
Seyfert Galaxy; Active Galactic Nuclei; spectroscopic observation; NGC 5728;
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