Cepheids and Long Period Variables in M 33 Conference Paper uri icon


  • We are conducting a long-term photometric survey of the nearby galaxy M 33 to discover Cepheids, eclipsing binaries, and long-period variables. The dataset combines previously-obtained optical images from the DIRECT project with new observations acquired at the WIYN 3.5m telescope. The entire data set spans over 7 years with excellent synoptic coverage which will enable the discovery and characterization of stars displaying variability over a wide range of timescales (days, weeks, months, years). In this preliminary work we show representative light curves of different variables we found so far in two fields, color-magnitude diagrams, and optical Cepheid Period-Luminosity relations for M 33. The ultimate goal of the project is to provide an absolute calibration of the Cepheid Period-Luminosity relation, and to study its metallicity dependence at optical wavelengths. 2009 American Institute of Physics.

name of conference

  • STELLAR PULSATION: CHALLENGES FOR THEORY AND OBSERVATION: Proceedings of the International Conference

published proceedings

  • AIP Conference Proceedings

author list (cited authors)

  • Pellerin, A., Macri, L. M., Bradshaw, A. K., Stanek, K. Z., Guzik, J. A., & Bradley, P. A.

complete list of authors

  • Pellerin, Anne||Macri, Lucas M||Bradshaw, Andrew K||Stanek, Krzysztof Z||Guzik, Joyce Ann||Bradley, Paul A

publication date

  • January 1, 2009 11:11 AM


  • AIP  Publisher