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A&A Supplement Series, Vol. 125, November I 1997, 445-451

Received January 6; accepted January 25, 1997

Search for envelopes of some stellar planetary nebulae, symbiotic stars and further emission-line objects gif

L. Kohoutek

Send offprint request: L. Kohoutek
Hamburger Sternwarte, Gojenbergsweg 112, D-21029 Hamburg, Germany


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 tex2html_wrap_inline814 filters). Nebulosities were found at: tex2html_wrap_inline816 (tex2html_wrap_inline818 in x-direction, tex2html_wrap_inline822 in y-direction), H 2-2 (tex2html_wrap_inline828, tex2html_wrap_inline830) and tex2html_wrap_inline832 (tex2html_wrap_inline834, tex2html_wrap_inline834). Further small nebulosities are possible at MWC 560, MWC 574, tex2html_wrap_inline838 and HR Del, but they should be considered as rather uncertain. Besides, the known outer nebula at tex2html_wrap_inline816 (2 condensations, tex2html_wrap_inline842 separation, tex2html_wrap_inline844) was observed, and the author discovered a circular halo of 50'' around Hb 6 - both outer nebulosities visible in the light of tex2html_wrap_inline814.

keywords: planetary nebulae: general; stars: symbiotic; stars: novae; stars: horizontal branch

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