Finding beat Cepheids in M33 and their use in measuring the metallicity gradient
Astrophysics Research Institute, Liverpool John Moores University, IC2, Liverpool Science Park, 146 Brownlow Hill, Liverpool, L3 5RF, UK
Published online: 8 September 2017
The period ratio between the two different pulsation modes of beat Cepheids is directly affected by the metallicity of the star. Our aim is to find all of the beat Cepheids in M33 and determine their metallicities hence allowing us to derive the metallicity gradient. To achieve this we have M33 data from the INT and the CFHT variability survey conducted by Hartman et al. (2006, ).
© The Authors, published by EDP Sciences, 2017
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