Deep CFHT Photometric Survey of the Entire M33 Galaxy I: Catalogue of 36000 Variable Point Sources

Details Deep CFHT Photometric Survey of the Entire M33 Galaxy I: Catalogue of 36000 Variable Point Sources Deep CFHT Photometric Survey of the Entire M33 Galaxy I: Catalogue of 36000 Variable Point Sources

2006-03-20

arxiv.org/abs/astro-ph/0603527v1

Mon.Not.Roy.Astron.Soc.371:1405,2006

Astronomy and Astrophysics

Astrophysics

Submitted to MNRAS. 20 pages, 16 figures. Catalogue and light curves are available at http://www.astro.livjm.ac.uk/~dfb/M33/ a

Scientific paper

10.1111/j.1365-2966.2006.10764.x

We have conducted a variability survey of the local group galaxy M33 using g', r', and i' observations from 27 nights spanning 17 months made with the MegaPrime/MegaCam instrument on the 3.6 m CFHT telescope. We identify more than 36000 variable sources with g',r',i' < 24 out of approximately 2 million point sources in a one square degree field of view. This increases the number of known variables in this galaxy by more than a factor of 20. In this paper we provide a brief description of the data and a general overview of the variable star population which includes more than 800 candidate variable blue and red supergiant stars, more than 2000 Cepheids, and more than 19000 long period variable AGB and RGB stars.

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