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Collimating Discs and Bipolar Flows in SH 2–71

Published online by Cambridge University Press:  07 August 2017

L. Cuesta  and
J. P. Phillips
L. Cuesta
Affiliation:
Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, Spain
J. P. Phillips
Affiliation:
Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, Spain

Extract

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Sh 2–71 appears to represent a diffuse, ellipsoidal nebulosity extending over a range Δα × Δδ = 1.7 = 3 arcmin2. Early spectroscopy by Glushkov et al (1975), and Chopinet and Lortet-Zuckerman (1976) suggested the presence of a high excitation central star, and Kaler (1983) has more recently determined Zanstra temperatures Tz(HeII) > 7.7 · 104 K. The observed central star clearly constitutes a much cooler companion, and luminosity variations in this source have been attributed to binary eclipse.

Type
III. Highlights on the Nebulae
Information
Symposium - International Astronomical Union , Volume 155: Planetary Nebulae , 1993 , pp. 199
Copyright
Copyright © Kluwer 1993