LUMINOUS INFRARED GALAXIES .2. NGC-4945 - A NEARBY OBSCURED STARBURSTSEYFERT NUCLEUS

We have studied the physical conditions, reddening, and kinematics in the nuclear and circumnuclear regions of the luminous IR source NGC 49 45. The I-band image shows a wide cone of radiation that emerges from the partially obscured nuclear region. The H alpha + [N II] image reve als an extended nuclear region located at the same position as the I-b and nucleus. Two extended filaments emerge from this region as well. A perture optical spectroscopy of the nuclear region shows strong redden ing in the continuum, and only the blends H alpha + [N II] and [S II] appear in emission. The long-slit spectroscopy at P.A. = 90 degrees, c oincident with the main H alpha filament, shows in the nuclear region a weak [O I] LINER or weak [O III] Seyfert spectrum and blueshifted br oad components in the [N II] and [S II] lines that are probably associ ated with superwinds. The velocity curve (at P.A. = 90 degrees) is cle arly asymmetric, with the mean velocity shifted toward the obscured nu clear region.