Infrared Observations of Three Unusual Nebulae
Abstract
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.
- Publication:
-
Astrophysical Letters
- Pub Date:
- February 1975
- Bibcode:
- 1975ApL....16..165C
- Keywords:
-
- 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;
- Astronomy