Observations of the filamentary nebula Simeiz 22

Details Observations of the filamentary nebula Simeiz 22 Observations of the filamentary nebula Simeiz 22

Feb 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984pazh...10..122l&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 10, Feb. 1984, p. 122-129) Soviet Astronomy Letters (ISSN 0360-0327), vol. 10, Jan.-Feb

Astronomy and Astrophysics

Astronomy

1

Astronomical Photography, Forbidden Transitions, Line Spectra, Planetary Nebulae, Brightness Distribution, Image Tubes, Interstellar Gas, Oxygen Spectra, Stellar Mass

Scientific paper

Interference-filter photographs of the nebula Simeiz 22 (Sharpless 188) in the (S II), (N II), (O III) lines, taken with a contact image tube at the Cassegrain focus of the 125-cm Crimean reflector, have been processed by photographic equidensitometry, yielding detailed isophotes in each line. The nebula morphology differs in the three lines, showing the stratified emission typical of planetary nebulae. The origin of Simeiz 22 is discussed; indirect arguments point to mass loss by the central star.

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