Tridimensional Spectroscopic Observation of the Interacting System NGC 7592

Details Tridimensional Spectroscopic Observation of the Interacting System NGC 7592 Tridimensional Spectroscopic Observation of the Interacting System NGC 7592

Jun 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002pasj...54..393h&link_type=abstract

Publications of the Astronomical Society of Japan, Vol.54, No.3, pp.393-404

Astronomy and Astrophysics

Astronomy

4

Galaxies: Individual (Ngc 7592), Galaxies: Interactions, Galaxies: Seyfert, Galaxies: Starburst

Scientific paper

We performed a tridimensional spectroscopic study of NGC 7592, an infrared-luminous interacting system of three galaxies, one of which contains a Seyfert 2 nucleus. Narrow-band images of Hα and [O III ] were obtained using an imaging Fabry-Perot interferometer with a tunable filter. An area-spectroscopic observation was also made by a slit scan in a direction perpendicular to the slit. The Seyfert nucleus was found to be surrounded by a knotty star-forming region of disk- or ring-shape. Along the axis of the disk or ring, a highly-ionized bipolar gaseous region was identified. From kinematical analyses, it has been suggested that this system is composed of two galaxies; one apparent nucleus is considered to be a giant H II region belonging to one galaxy. This result is supported by the morphological properties in near-infrared. Further, it has been suggested that one galaxy is an early-type spiral, whereas the other is a late-type one, and the two galaxies show a marked difference in the distribution of the star-forming regions within each. The cause of the difference was argued in relation with the dynamical perturbation between the two galaxies.

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