Year: 1993
Type: conference-abstract
Abstract: 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.
Authors: L. Cuesta, J. P. Phillips
Institution: Instituto de Astrofísica de Canarias
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4230700150