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Symbiotic Star as 201: a Planetary Nebula

Published online by Cambridge University Press:  12 April 2016

L. Kohoutek
L. Kohoutek*
Affiliation:
Hamburger Sternwarte, Hamburg, F.R.G.

Abstract

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Optical spectrum of AS 201 is presented: this object shows emission lines of moderate excitation (exc.class 5) and absorption spectrum of a G2III star. For the interstellar extinction and distance the values c=0.45 and d=1.5 kpc were estimated. The hot components of AS 2Ol, Cn 1–1 and M 1–2 are located on the Harman-Seaton sequence in the region of evolved central stars of PN. It is suggested that the hot components of some SS are evolved nuclei of PN; high el.density of their nebulae may be explained due to mass loss from the respective cool stars of the binaries.

Type
VII. Related Objects
Information
International Astronomical Union Colloquium , Volume 93: Cataclysmic Variables: Recent Multi-Frequency Observations and Theoretical Developments , 1987 , pp. 781 - 784
Copyright
Copyright © Reidel 1987

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