TY - JOUR
T1 - Deep Canada-France-Hawaii Telescope photometric survey of the entire M33 galaxy - I. Catalogue of 36 000 variable point sources
AU - Hartman, J. D.
AU - Bersier, D.
AU - Stanek, K. Z.
AU - Beaulieu, J. P.
AU - Kaluzny, J.
AU - Marquette, J. B.
AU - Stetson, P. B.
AU - Schwarzenberg-Czerny, A.
PY - 2006/9
Y1 - 2006/9
N2 - 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 Canada-France-Hawaii Telescope (CFHT). We identify more than 36 000 variable sources with g′, r′, i′ ≲ 24, out of approximately two million point sources in a 1-deg2 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 1300 candidate variable blue and red supergiant stars, more than 2000 Cepheids, and more than 19 000 long-period variable asymptotic giant branch and red giant branch stars.
AB - 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 Canada-France-Hawaii Telescope (CFHT). We identify more than 36 000 variable sources with g′, r′, i′ ≲ 24, out of approximately two million point sources in a 1-deg2 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 1300 candidate variable blue and red supergiant stars, more than 2000 Cepheids, and more than 19 000 long-period variable asymptotic giant branch and red giant branch stars.
KW - Catalogues
KW - Cepheids
KW - Galaxies: individual: M33
KW - Stars: variables: other
KW - Surveys
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U2 - 10.1111/j.1365-2966.2006.10764.x
DO - 10.1111/j.1365-2966.2006.10764.x
M3 - Article
AN - SCOPUS:33748322086
SN - 0035-8711
VL - 371
SP - 1405
EP - 1417
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 3
ER -