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Spectrophotometry of B and A-Type Supergiants

Published online by Cambridge University Press:  12 April 2016

Luis E. Campusano
Luis E. Campusano*
Affiliation:
Departamento de Astronomia, Universidad de Chile, Casilla 36-D, Santiago

Extract

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Continuum fluxes measured with a two-channel spectrum scanner and a 40 A slit are presented, in a differential manner, for six supergiants over the wavelength range 3390-8090 A. Five of these stars presented variability detectable on a time scale of a few days. The stars with the stronger light changes were HD 148379 and HD 160529, both with Hα-emission, whose maximum observed amplitudes amounted to 0.06 and 0.14 mag. The Ha observations done with a 4 A slit gave no indication of strong intensity variations over the same time interval. Some evidence for the presence of a Balmer continuum emission is presented for HD 160529, and we briefly relate it to a possible origin of its Hα-emission profile.

Type
Part I: Young Objects
Information
International Astronomical Union Colloquium , Volume 42: The Interaction of Variable Stars with their Environment , 1977 , pp. 128 - 136
Copyright
Copyright © Veröff. Der Remeis-Sterwarte 1977

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