The Optical Gravitational Lensing Experiment: catalogue of stellar proper motions in the OGLE-II Galactic bulge fields
The Optical Gravitational Lensing Experiment: catalogue of stellar proper motions in the OGLE-II Galactic bulge fields
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DOI：
10.1111/j.1365-2966.2004.07457.x
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发表时间：
2003-05
影响因子：
4.8
通讯作者：
Takahiro Sumi;X. Wu;A. Udalski;M. Szymański;M. Kubiak;G. Pietrzyński;G. Pietrzyński;I. Soszyński;P. Wozniak;K. Żebruń;O. Szewczyk;Ł. Wyrzykowski
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文献类型：
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作者：
Takahiro Sumi;X. Wu;A. Udalski;M. Szymański;M. Kubiak;G. Pietrzyński;G. Pietrzyński;I. Soszyński;P. Wozniak;K. Żebruń;O. Szewczyk;Ł. Wyrzykowski
本文给出了光学引力透镜实验II（OGLE-II）星系核（GB）中49个视场的5080236颗恒星的自行（μ）星表，覆盖范围为-11 ° < l < 11°和-6 ° < B < 3°，总面积接近11 deg 2。自行测量是基于138-555 I波段图像在四个观测季节：1997-2000年。星表中的恒星星等范围是11 < I < 18等，特别地，星表中包括了GB中的红团巨星和红巨星，以及银盘中的主序星。在μ = 500 masyr-1范围内，自行的测量精度为0.8-3.5 masyr-1，这取决于星星的亮度。这一星表对研究银河系和银盘中恒星的运动学可能是有用的。
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° < l < 11° and -6° < b < 3°, the total area close to 11 deg 2 . 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 and red giants in the GB, and main-sequence stars in the Galactic disc. The proper motions up to μ = 500 mas yr -1 were measured with a mean accuracy of 0.8-3.5 mas yr -1 , depending on the brightness of a star. This catalogue may be useful for studying the kinematics of stars in the GB and the Galactic disc.