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New Radial Velocities and the Barnes-Evans Method

Published online by Cambridge University Press:  15 February 2018

Robert Hindsley  and
R.A. Bell
Robert Hindsley
Affiliation:
, U.S. Naval Observatory, Washington D.C.
R.A. Bell
Affiliation:
University of Maryland

Abstract

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New radial velocities by Butler are used to recalculate the absolute magnitudes of Eta Aquilae and X Cygni using the Barnes-Evans method. The new velocities have little effect on the result for Eta Aquilae, but the absolute magnitude of X Cygni is found to be 0.40 mag fainter than that obtained earlier.

Type
Windows on the Instability Strip
Information
International Astronomical Union Colloquium , Volume 139: New Perspectives on Stellar Pulsation and Pulsating Variable Stars , 1993 , pp. 386
Copyright
Copyright © Cambridge University Press 1993