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Limitations of Precise Radial Velocity Measurements in Pulsating Stellar Atmospheres

Published online by Cambridge University Press:  12 April 2016

J. Vinkó ,
G. Kaszás  and
L. L. Kiss
J. Vinkó
Affiliation:
Research Group on Laser Physics of the Hungarian Academy of Sciences, and Department of Optics & Quantum Electronics, JATE University, Szeged, POB 406 H-6701, Hungary
G. Kaszás
Affiliation:
Department of Optics & Quantum Electronics, JATE University
L. L. Kiss
Affiliation:
Department of Experimental Physics, JATE University, Szeged, Dóm tér 9, H-6720, Hungary

Abstract

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We study the velocities of specific stellar absorption lines of Cepheid-type variable stars determining line bisector velocities from newly obtained high-resolution echelle spectra. We compare these velocities with recent CORAVEL measurements of Cepheids to reveal systematic differences of 2 – 3 kms−1.

Type
Part 5. Variable Stars
Information
International Astronomical Union Colloquium , Volume 170: Precise Stellar Radial Velocities , 1999 , pp. 223 - 227
Copyright
Copyright © Astronomical Society of the Pacific 1999

References

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