OGLE-II High proper motion stars (Eyer+, 2001)

Details OGLE-II High proper motion stars (Eyer+, 2001) OGLE-II High proper motion stars (Eyer+, 2001)

Jan 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003ycat..73270601e&link_type=abstract

VizieR On-line Data Catalog: J/MNRAS/327/601. Originally published in: 2001MNRAS.327..601E

Astronomy and Astrophysics

Astronomy

Stars: Variable, Proper Motions

Scientific paper

The difference image analysis (DIA) of the images obtained by the Optical Gravitational Lensing Experiment (OGLE-II) revealed a peculiar artefact in the sample of stars proposed as variable by Woniak in one of the Galactic bulge fields: the occurrence of pairs of candidate variables showing anti-correlated light curves monotonic over a period of 3 yr. This effect can be understood, quantified and related to the stellar proper motions. DIA photometry supplemented with a simple model offers an effective and easy way to detect high proper motion stars in very dense stellar fields, where conventional astrometric searches are extremely inefficient.
(1 data file).

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