Astron. Astrophys. Suppl. Ser.
Volume 125, Number 3, November I 1997
|Page(s)||445 - 451|
|Published online||15 November 1997|
Search for envelopes of some stellar planetary nebulae, symbiotic stars and further emission-line objects*
Hamburger Sternwarte, Gojenbergsweg 112, D-21029 Hamburg, Germany
Send offprint request to: L. Kohoutek
Accepted: 25 January 1997
At 17 emission-line objects, mainly PN, the seeing disc has been compared with that of some surrounding stars (CCD frames taken through B, V, R, [OIII] 5007 Å and filters). Nebulosities were found at: (0.″5 in x-direction, 0.″4 in y-direction), H 2-2 (0.″3, 1.″4) and (1.″3, 1.″3). Further small nebulosities are possible at MWC 560, MWC 574, and HR Del, but they should be considered as rather uncertain. Besides, the known outer nebula at (2 condensations, 11.″6 separation, ) was observed, and the author discovered a circular halo of 50″ around Hb 6 - both outer nebulosities visible in the light of .
Key words: planetary nebulae: general; stars: symbiotic; stars: novae; stars: horizontal branch
© European Southern Observatory (ESO), 1997