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J/MNRAS/327/601     OGLE-II High proper motion stars          (Eyer+, 2001)
Photometric detection of high proper motions in dense stellar fields using
Difference Image Analysis.
    Eyer L., Wozniak P.R.
   <Mon. Not. R. Astron. Soc. 327, 601 (2001)>
   =2001MNRAS.327..601E
ADC_Keywords: Stars, variable ; Proper motions

Keywords: methods: data analysis - techniques: photometric - astrometry -
          stars: variables: other

Abstract:
    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.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat        68       74   HPM stars found in the OGLE bulge field SC1


See also:
    J/AcA/51/175 : OGLE-II DIA microlensing events (Wozniak+, 2001)
    J/AcA/50/421 : OGLE-II DIA data (Wozniak+, 2000)


Byte-by-byte Description of file: table1.dat

   Bytes Format Units     Label     Explanations

   1-  4  I4    ---       Name1     First OGLE BUL-SC1 number of the pair
       5  A1    ---       ---       [-]
   6-  9  I4    ---       Name2     Second OGLE BUL-SC1 number of the pair
  11- 15  F5.2  mag       Imag      I magnitude
  17- 18  I2    h         RAh       Right ascension (J2000)
  20- 21  I2    min       RAm       Right ascension (J2000)
  23- 27  F5.2  s         RAs       Right ascension (J2000)
      29  A1    ---       DE-       Declination sign (J2000)
  30- 31  I2    deg       DEd       Declination (J2000)
  33- 34  I2    arcmin    DEm       Declination (J2000)
  36- 39  F4.1  arcsec    DEs       Declination (J2000)
  41- 45  F5.1  mas/yr    pmRA      Proper motion in right ascension
  47- 49  F3.1  mas/yr    e_pmRA    rms uncertainty on pmRA
  51- 55  F5.1  mas/yr    pmDE      Proper motion in declination
  57- 59  F3.1  mas/yr    e_pmDE    rms uncertainty on pmDE
  61- 64  F4.1  mas/yr    pm        Total proper motion
  66- 68  F3.1  mas/yr    e_pm      rms uncertainty on pm


History:
    From electronic version of the journal
(End)                         James Marcout, Patricia Bauer [CDS]    20-Jan-2003