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CCD Photometry of RR Lyrae Stars in M3

Published online by Cambridge University Press:  15 February 2018

C. Cacciari ,
E. Carretta ,
F. Ferraro ,
F. Fusi Pecci ,
G. Tessicini ,
J.M. Nemec  and
A.R. Walker
C. Cacciari
Affiliation:
, Bologna Observatory, Italy
E. Carretta
Affiliation:
University of Padova, Italy
F. Ferraro
Affiliation:
, Bologna Observatory, Italy
F. Fusi Pecci
Affiliation:
, Bologna Observatory, Italy
G. Tessicini
Affiliation:
, Bologna Observatory, Italy
J.M. Nemec
Affiliation:
Washington State University, Pullman, USA
A.R. Walker
Affiliation:
University of British Columbia, Victoria, Canada

Abstract

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New CCD BVI observations of RR Lyrae variables in M3 are presented. Mean magnitudes and colours are derived, as well as their relations with periods and amplitudes, and comparisons are made with previous data (Sandage 1981, 1990). Preliminary results are presented on the temperature distribution of the variables and the period-shift effect with respect to M15 and M68.

Type
Windows on the Instability Strip
Information
International Astronomical Union Colloquium , Volume 139: New Perspectives on Stellar Pulsation and Pulsating Variable Stars , 1993 , pp. 325 - 331
Copyright
Copyright © Cambridge University Press 1993

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