Epsilon Aurigae. II - The shell spectrum

Details Epsilon Aurigae. II - The shell spectrum Epsilon Aurigae. II - The shell spectrum

Mar 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...243..230f&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 243, no. 1, March 1991, p. 230-238.

Astronomy and Astrophysics

Astrophysics

9

Accretion Disks, Eclipsing Binary Stars, Stellar Envelopes, Stellar Spectra, Variable Stars, Companion Stars, Light Curve, Supergiant Stars, Ubv Spectra

Scientific paper

A refined mathematical procedure is applied to obtain the shell spectrum produced by the gaseous envelope of the eclipsing companion of Epsilon Aurigae during the 1982 to 1984 eclipse. The extraction algorithm compensates for the spectrum of the primary FO supergiant and also for its intrinsic variability that is translated into a residual uncertainty band in a fully quantitative manner. Fifteen pure shell spectra were derived at different eclipse phases, covering the range from 3600A to 4960A and providing a complete scanning through the gaseous body, including its outer edge well beyond the eclipsing body.

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