The Integral Field Spectroscopy (IFS hereafter) is a powerful method for investigating the extended emission-line regions of the AGNs. In this poster we present an application of IFS to the circumnuclear and extranuclear regions of the Seyfert-2 galaxy NGC 4388. NGC 4388 is a highly inclined spiral galaxy (i = 75°), located in the core of the Virgo cluster. The presence of a bar with associated dust lanes obscures the nucleus of the galaxy (Phillips and Malin, 1982). Narrow band images have revealed the existence of excitation gas appearing distributed into two opposite cones (Pogge, 1988). Furthermore, the galaxy contains a double-peaked radio source close to the optical nucleus (Stone et al., 1988) aligned with the extended emission-line regions. Wheak broad Hα emission components (FWZI = 4000 km/s), attributed to scattered light originated in an hidden Seyfert-1 broad line region, have been detected at several locations far from the nucleus (Shields and Filippenko, 1988).
NGC 4388: imaging and kinematics of the nuclear region through integral field spectroscopy
CIROI, STEFANO;RAFANELLI, PIERO;
2000
Abstract
The Integral Field Spectroscopy (IFS hereafter) is a powerful method for investigating the extended emission-line regions of the AGNs. In this poster we present an application of IFS to the circumnuclear and extranuclear regions of the Seyfert-2 galaxy NGC 4388. NGC 4388 is a highly inclined spiral galaxy (i = 75°), located in the core of the Virgo cluster. The presence of a bar with associated dust lanes obscures the nucleus of the galaxy (Phillips and Malin, 1982). Narrow band images have revealed the existence of excitation gas appearing distributed into two opposite cones (Pogge, 1988). Furthermore, the galaxy contains a double-peaked radio source close to the optical nucleus (Stone et al., 1988) aligned with the extended emission-line regions. Wheak broad Hα emission components (FWZI = 4000 km/s), attributed to scattered light originated in an hidden Seyfert-1 broad line region, have been detected at several locations far from the nucleus (Shields and Filippenko, 1988).
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