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Fading and variations in the spectrum of the central star of the young Planetary Nebula SAO 244567 (Hen 1357)

Published online by Cambridge University Press:  25 May 2016

M. Parthasarathy ,
P. Garcia-Lario ,
D. de Martino ,
S. R. Pottasch  and
S.F. de Cordoba
M. Parthasarathy
Affiliation:
1Observatoire de Strasbourg 2Indian Institute of Astrophysics, Bangalore
P. Garcia-Lario
Affiliation:
3Sterrewacht Leiden
D. de Martino
Affiliation:
4Observatorio Astronomico, Naples
S. R. Pottasch
Affiliation:
5Kapteyn Astronomical Institute, Groningen
S.F. de Cordoba
Affiliation:
6IUE Observatory, Madrid

Extract

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SAO 244567 (= Hen 1357) is a very young planetary nebula. It was discovered by Parthasarathy et al. (1993, A and A 267, L19). Based on the spectrum obtained around 1950 Henize (1976, ApJ Suppl 30, 491) classified it as a B or A type H-alpha emission line star. The optical spectrum of SAO 244567 obtained in 1971 shows that it was a post-AGB B1 supergiant at that time. It has turned into a planetary nebula within the last 20 years (Parthasarathy et al. 1995, A and A 300, L25).

Type
III. Central Stars
Information
Symposium - International Astronomical Union , Volume 180: Planetary Nebulae , 1997 , pp. 123 - 124
Copyright
Copyright © Kluwer 1997