Image Details
Caption: Fig. 4.
Negative gray‐scale representation of the [N II] λ6584 position‐velocity array for the core of KjPn 8. The slit is oriented north‐south, and north is indicated in the figure. A Gaussian filter has been applied to enhance faint features, such as the expanding "cone" of emission to the north of the core where the more intense, blueshifted component is seen to reach ﹩V_{\mathrm{hel}\,}\approx -100﹩ km s−1. The bright inner core region, superposed on the figure, shows line splitting corresponding to the expansion of the ring, which has been resolved for the first time with the narrow slit used in the present observations and amounts to 16 km s−1, considering the ring’s tilt. The more extended nebular material surrounding the core expands at ≈40 km s−1, as found previously by López et al. (1997).
© 2000. The American Astronomical Society. All rights reserved. Printed in U.S.A.