The Ages of the Stars that illuminate the Cometary Nebulae

Details The Ages of the Stars that illuminate the Cometary Nebulae The Ages of the Stars that illuminate the Cometary Nebulae

Feb 1965

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1965bott....4...22p&link_type=abstract

Boletín de los Observatorios de Tonantzintla y Tacubaya Vol. 4, pp. 22-25 (1965) (http://www.astroscu.unam.mx/bott/)

Astronomy and Astrophysics

Astronomy

4

Stars: Evolution, Stars: Planetary Systems, Ism: Reflection Nebulae

Scientific paper

Conical nebulae are regions of high density, and the most favorable ones for the formation of stars are the most pointed conical nebulae. Hence there are good reasons to consider cometary nebulae as an advanced stage of development of some of teh pointed dark conical nebulae. We propose that cometary nebulae are very young (and transitory) configurations illuminated by even younger stars. We conclude that dark conical nebulae are the birth places of stars, and that the first stars to be formed are at their vertices. Finally the mean age of a representative sample of these objects is found to be ~ 19,000 years.

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