Paper:	Petersen Diagram for the Bump Cepheids
Volume:	135, A Half Century of Stellar Pulsation Interpretations: a Tribute to Arthur N. Cox
Page:	29
Authors:	Moskalik, P.; Krzyt, T.
Abstract:	We have analysed published radial velocity data for 126 Pop.I Galactic Cepheids. For each variable the shape of the velocity curve has been described quantitatively with the Fourier parameters fn1 and Rn1. This sample supersedes previous collection of velocity curves by Kovacs, Kisvarsanyi and Buchler. For 45 variables with periods of 5-10 days the period ratio, P2/P0, has been determined from the Fourier parameters. The resultant Petersen diagram for these stars is compared with theoretical model calculations. We show that the slope of the evolutionary M-L relation of Becker, Iben and Tuggle (1976) is in full agreement with the data.

Astronomical Society of the Pacific
Conference Series

© Copyright 1988 - 2024 - Astronomical Society of the Pacific
No part of the material protected by this copyright may be reproduced or used in any form other than for personal use without written permission from the ASP.

Page generated in 0.060 seconds