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Search for the Young Planetary Nebulae. Preliminary Results

Published online by Cambridge University Press:  07 August 2017

L.N. Kondratjeva
L.N. Kondratjeva*
Affiliation:
Astrophysical Institute of Kazakh Academy of Sciences, Kamenskoje Plato, 480068 Alma-Ata Kazakhstan

Abstract

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Some criteria based on the model calculations and observational data were used to choose preplanetaries and young planetary nebulae. Observational results for the object TH4–4 are presented. The spectral and photometric variations of TH4–4 are discussed.

Type
IV. Planetary Nebulae Connection: Evolution from the AGB
Information
Symposium - International Astronomical Union , Volume 155: Planetary Nebulae , 1993 , pp. 358
Copyright
Copyright © Kluwer 1993