Article contents
Revision of the [Fe/H] – φ31 – P relationship for RRc variables
Published online by Cambridge University Press: 18 February 2014
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.
- Type
- Contributed Papers
- Information
- Proceedings of the International Astronomical Union , Volume 9 , Symposium S301: Precision Asteroseismology , August 2013 , pp. 461 - 462
- Copyright
- Copyright © International Astronomical Union 2014
References
- 1
- Cited by