Faculty Publications

Revision Of The [Fe/H]-Φ31-P Relationship For Rrc Variables

Document Type

Conference

Keywords

stars: abundances, stars: variables: other

Journal/Book/Conference Title

Proceedings of the International Astronomical Union

Volume

9

Issue

S301

First Page

461

Last Page

462

Abstract

The relationship derived by Morgan et al. (2007) for type-c RR Lyrae variables (RRc) between values of [Fe/H]-φ31-P has been revised and expanded. New relationships are based upon Fourier coefficients of 163 RRc variables in 19 Galactic globular clusters using the metallicity scales of Harris (2010), Zinn & West (1984) and Carretta et al. (2009). This larger database includes more low-metallicity clusters ([Fe/H] <-2.0), and the best fitting relations are found to depend upon values of log P rather than P. The new relations are applied to various populations of RRc including Milky Way field variables, LMC globular clusters variables, ω Cen RRc, and RRc in various OGLE III databases. Copyright © International Astronomical Union 2014.

Original Publication Date

3-3-2014

DOI of published version

10.1017/S1743921313015056

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