Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978mnras.182..687c&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 182, Mar. 1978, p. 687-704. Research supported by the Consejo Nacional
Astronomy and Astrophysics
Astronomy
157
Astronomical Photometry, Cosmology, Infrared Astronomy, Nebulae, Radio Astronomy, Spectrophotometry, Light Emission, Line Spectra, Planetary Nebulae, Stellar Evolution
Scientific paper
Optical spectrophotometry, infrared photometry and radio continuum observations are combined to investigate the class of bipolar nebulae defined purely morphologically. The evolutionary status of these objects is considered. A few represent pre-main sequence objects; most seem to be proto-planetary nebulae; and a small number are evolved planetary nebulae.
Calvet Nuria
Cohen Martin
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