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The Optical Gravitational Lensing Experiment. Catalog of stellar proper motions in the OGLE-II Galactic bulge fields

T. Sumi·X. Wu·A. Udalski·M. Szymanski·M. Kubiak·G. Pietrzynski·I. Soszynski·P. Wozniak·K. Zebrun·O. Szewczyk·L. Wyrzykowski
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Abstract

We present a proper motion (μ) catalogue of 5,080,236 stars in 49 Optical Gravitational Lensing Experiment II (OGLE-II) Galactic bulge (GB) fields, covering a range of -11 deg. <l< 11 deg. and -6 deg. <b<3 deg., the total area close to 11 square degrees. The proper motion measurements are based on 138 - 555 I-band images taken during four observing seasons: 1997-2000. The catalogue stars are in the magnitude range 11 < I < 18 mag. In particular, the catalogue includes Red Clump Giants (RCGs) and Red Giants in the GB, and main sequence stars in the Galactic disc. The proper motions up to μ= 500 mas/yr were measured with the mean accuracy of 0.8-3.5 mas/yr, depending on the brightness of a star. This catalogue may be useful for studying the kinematic of stars in the GB and the Galactic disk.

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T. Sumi, X. Wu, A. Udalski, M. Szymanski, M. Kubiak, G. Pietrzynski, I. Soszynski, P. Wozniak, K. Zebrun, O. Szewczyk, L. Wyrzykowski. 2003-11-28. The Optical Gravitational Lensing Experiment. Catalog of stellar proper motions in the OGLE-II Galactic bulge fields. https://doi.org/10.1111/j.1365-2966.2004.07457.x

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