Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975apl....16..165c&link_type=abstract
Astrophysical Letters, vol. 16, no. 4, 1975, p. 165-171.
Astronomy and Astrophysics
Astronomy
66
Astronomical Photometry, Infrared Astronomy, Planetary Nebulae, Radio Astronomy, Stellar Spectrophotometry, B Stars, H Alpha Line, Near Infrared Radiation, Radiant Flux Density, Spectral Energy Distribution, Ubv Spectra, Visual Observation, Wolf-Rayet Stars
Scientific paper
Optical, infrared, and radio data are assembled for the three objects M1-67, Sh2-266, and NGC 2346, which previously have been classified as planetary nebulae. It is argued that none of these nebulae is in fact a planetary. M1-67 is almost certainly a ring nebula containing a Population 1 WN star; Sh2-266 is probably a nebulosity containing an emission-line B star; and the nature of NGC 2346 is presently indeterminate.
Barlow Michael J.
Cohen Martin
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