Image Details
Caption: Fig. 1.
Panel a shows a deep Hα wide‐field, ground‐based image of the polypolar nebula KjPn 8. The symmetric knots C1‐C2 (P.A. 72°) and A1‐A2 (P.A. 126°) are located at the tips of independent bipolar outflows. The whole nebula is ﹩14^{\prime }\times 4^{\prime }﹩ in extent. Both bottom panels contain the same region covered by the WF2 + WF3 CCDs of the WFPC2 camera, shown at different gray scales to highlight different features. In panel b the ring structure and orientation of the compact nebular core with respect to the A2‐A1 bipolar outflows is appreciated; this is to be compared with panel c, where the filamentary structure leading to the A2 bow shock can be seen. The ellipse drawn around the core in panel b indicates the location and approximate dimensions of the massive CO disk found by Huggins et al. (1997). The spatial resolution of the image in panel c has been slightly degraded in order to enhance the nebular features. Note that the orientation of the bottom panels, indicated in panel b, differ from that of the top panel.
© 2000. The American Astronomical Society. All rights reserved. Printed in U.S.A.