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The Radial Velocity Projection Factor in the Pulsating Helium Star V652 Her

Published online by Cambridge University Press:  12 April 2016

P. Montañés Rodriguez ,
C. S. Jeffery ,
R. Aznar Cuadrado  and
D. Pollacco
P. Montañés Rodriguez
Affiliation:
Armagh Observatory, College Hill, Armagh BT61 9DG, Northern Ireland
C. S. Jeffery
Affiliation:
Armagh Observatory, College Hill, Armagh BT61 9DG, Northern Ireland
R. Aznar Cuadrado
Affiliation:
Armagh Observatory, College Hill, Armagh BT61 9DG, Northern Ireland
D. Pollacco
Affiliation:
Isaac Newton Group, La Palma, Spain

Abstract

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The behavior of the velocity projection factor was studied for three individual Lines, He ɪ 4438 Å, Si ɪɪɪ 4553 Å, and N ɪɪ 4442 Å, and for the complete spectrum in the radially pulsating helium rich star V652 Her. It is shown that the projection factor is itself a function of expansion velocity.

Type
Part 6. Variables Close to the Main Sequence
Information
International Astronomical Union Colloquium , Volume 176: The Impact of Large-Scale Surveys on Pulsating Star Research , 2000 , pp. 441 - 442
Copyright
Copyright © Astronomical Society of the Pacific 2000

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