New Observations of Planetary Nebulae S22 and YM29

Spectral and monochromatic observations of two thin-filamentary nebulae S22 and YM29 have been carried out in the lines [O III] 5007A, [N II] 6584A and [S II] 6717+6732A. Radial stratification of the emission typical for photoionization excitation has been found: displacement between [O III] - brigh...

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Veröffentlicht in:Symposium - International Astronomical Union 1989, Vol.131, p.50-50
Hauptverfasser: Arkhipova, V.P., Lozinskaya, T.A., Moskalenko, E.I., Sitnik, T.G.
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Sprache:eng
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Zusammenfassung:Spectral and monochromatic observations of two thin-filamentary nebulae S22 and YM29 have been carried out in the lines [O III] 5007A, [N II] 6584A and [S II] 6717+6732A. Radial stratification of the emission typical for photoionization excitation has been found: displacement between [O III] - bright regions and [S II] - and [N II] -bright regions is equal ΔR ∼ 0.1R (about 0.01 to 0.2 pc), the first ones being closer to the nuclei. Both nebulae are characterized by more diffuse morphology in the [O III] line and by thin-filamentary one in the [N II] and [S II] lines.
ISSN:0074-1809
DOI:10.1017/S0074180900137490