DIRECT Distances to Nearby Galaxies Using Detached Eclipsing Binaries and Cepheids. VI. Variables in the Central Part of M33

Дата и время публикации : 2001-02-07T21:07:33Z

Авторы публикации и институты :
L. M. Macri (CfA)
K. Z. Stanek (CfA)
D. D. Sasselov (CfA)
M. Krockenberger (CfA)
J. Kaluzny (Copernicus Observatory)

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Коментарии к статье: A copy of the paper with full-resolution figures can be retrieved from . To appear in the February 2001 issue of the Astronomical Journal
Первичная категория: astro-ph

Все категории : astro-ph

Краткий обзор статьи: The DIRECT project aims to determine direct distances to two important galaxies in the cosmological distance ladder – M31 and M33 – using detached eclipsing binaries (DEBs) and Cepheids. We present the results of the first large-scale CCD-based search for variables in M33. We have observed two fields located in the central region of M33 for a total of 95 nights on the F. L. Whipple Observatory 1.2-m telescope and 36 nights on the Michigan-Dartmouth-MIT 1.3-m telescope. We have found a total of 544 variables, including 251 Cepheids and 47 eclipsing binaries. The catalog of variables is available online, along with finding charts and BVI light curve data (consisting of 8.2×10^4 individual measurements). The complete set of CCD frames is available upon request.

Category: Physics