=======================================================================
                 Ultra-Short-Period Binary Systems
           in the OGLE Fields Toward the Galactic Bulge

     I. Soszynski, K. Stepien, B. Pilecki, P. Mroz, A. Udalski,
    M. K. Szymanski, G. Pietrzynski, L. Wyrzykowski, K. Ulaczyk,
  R. Poleski, S. Kozlowski, P. Pietrukowicz, J. Skowron, M. Pawlak

=======================================================================
soszynsk@astrouw.edu.pl

This directory contains the sample of ultra-short-period eclipsing 
and ellipsoidal binary systems detected in the OGLE fields toward the
Galactic bulge.

The directory structure is as follows:

README            - this file

list.dat          - list of stars

phot/I/           - I-band photometry of individual objects
phot/V/           - V-band photometry of individual objects
phot.tar.gz       - gzipped phot/ directory

fcharts/          - finding charts of individual objects
 
pap.pdf           - PDF version of the paper Soszynski et al. (2014),
                    Acta Astron. 64, ..., (arXiv:1410....) describing the
                    catalog.

Format of the file list.dat:
--------------------------------------------------------------------------
 Bytes  Format Units   Description
--------------------------------------------------------------------------
  1- 19  A19   ---     Star's ID
 22- 37  A16   ---     OGLE internal database ID
 40- 41  I2    h       Right ascension, equinox J2000.0 (hours)
 43- 44  I2    m       Right ascension, equinox J2000.0 (minutes)
 46- 50  F5.2  s       Right ascension, equinox J2000.0 (seconds)
     52  A1    ---     Declination, equinox J2000.0 (sign)
 53- 54  I2    deg     Declination, equinox J2000.0 (degrees)
 56- 57  I2    arcmin  Declination, equinox J2000.0 (arc minutes)
 59- 62  F4.1  arcsec  Declination, equinox J2000.0 (arc seconds)
 64- 66  A3    ---     Subtype (C - contact, NC - non-contact, CV - cata-
                       clysmic variable, ELL - ellipsoidal variable
 69- 74  F6.3  mag     I-band magnitude at the maximum light
 76- 81  F6.3  mag     V-band magnitude at the maximum light
 83- 92  F10.8 days    Orbital period
 94- 98  F5.3  mag     Depth of the primary eclipse
100-104  F5.3  mag     Depth of the secondary eclipse
106-115  F10.5 days    Epoch of of the primary eclipse (HJD-2450000)
--------------------------------------------------------------------------

Finding charts are gzipped Postscript images. These are 60"x60" subframes
of the I-band reference frames centered on the star. White cross marks the
star. North is up and East to the left.
 
 
Any presentation of the scientific analysis or usage of the data from this
source should include the appropriate reference(s) to OGLE paper(s).