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Intermediate Band Photometry of RR Lyrae Variables in ω Cen and 47 Tuc

Published online by Cambridge University Press:  12 April 2016

D.H.P. Jones
D.H.P. Jones*
Affiliation:
Mount Stromlo and Siding Spring Observatories, Research School of Physical Sciences, Australian National University, Australia

Extract

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I have recently prepared for publication a study of 100 field RR Lyraes which were measured on the u, k, b, y, β system described by Jones (1971). It is shown that the following indices

β1 = β − 0.125(k − b) + 0.103(b−y)

(u − b)3 = (u − b) − 0.93(b − y) − 0.62(k − b) − 1.95(β − 2.75)

(k − b)2 = (k − b) − 0.826(b − y) + 0.25(β − 2.75)

correlate strongly with θeff, logg and [Fe/H] respectively. Figures in that paper show the tightness of the correlations.

Type
Part II / RR Lyrae Variables in Population II Systems
Information
International Astronomical Union Colloquium , Volume 21: Variable Stars in Globular Clusters and in Related Systems , August 1973 , pp. 84 - 87
Copyright
Copyright © Reidel 1973

References

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