Abstract
. 19W32 (359+103) is a planetary nebula with bipolar morphology. This planetary nebula is the only optically-identified object in the Westerbork search and thus has turned out to be the first planetary nebula discovered by radio techniques. This paper presents long-slit Echelle data in the Ha and [Nil] emission lines. The observations were obtained at the 3.9-rn Anglo-Australian Telescope. 19W32 exhibits characteristics similar to those found in other known bipolar planetary nebulae like MZ-3 and, particularly, M2-9. The kinematics of this object shows a gradient in velocity of 30 km 1 as measured from the tip of one lobe to the opposite. Furthermore, whereas the emission lines are single in the lobes they become multiple, with a complex structure, at the core of the object. The morphology and velocity structure of this planetary nebula indicate that a circumstellar shell is being driven by a stellar wind emerging from the core. The material that surrounds the core seems to have collimated ionized gas in opposite directions forcing it to flow away from the nucleus in a bipolar mode. A full version of this paper will appear elsewhere. : NEBULAE-PLANETARY
