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The m1 Index in RR Lyrae Stars

Published online by Cambridge University Press:  15 February 2018

Eloy Rodríguez ,
Angel Rolland  and
Pilar López de Coca
Eloy Rodríguez
Affiliation:
Instituto de Astrofísica de Andalucía, Apartado 3004, 18080-Granada, Spain
Angel Rolland
Affiliation:
Instituto de Astrofísica de Andalucía, Apartado 3004, 18080-Granada, Spain
Pilar López de Coca
Affiliation:
Instituto de Astrofísica de Andalucía, Apartado 3004, 18080-Granada, Spain

Abstract

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We have carried out simultaneous uvbyβ photometry for several RR Lyrae stars. For each of these stars, the observed m1 index variation along the pulsation cycle is compared with that expected variation from the (Δm1*,β) grids of Rodriguez et al. (1991) for the corresponding temperatures, gravities and metallicities. The m1 index variations are also calculated using the Kurucz's models. Good agreement is found

Type
Windows on the Instability Strip
Information
International Astronomical Union Colloquium , Volume 139: New Perspectives on Stellar Pulsation and Pulsating Variable Stars , 1993 , pp. 421
Copyright
Copyright © Cambridge University Press 1993