=======================================================================
               The OGLE Collection of Variable Stars
      New Galactic β Lyrae-type binaries showing super-orbital
                        photometric cycles

        G. Rojas Garcia, R. H. Mennickent, P. Iwanek.P.,
          J. Garces,I. Soszynski, N. Astudillo-Defru.

=======================================================================
rojas@camk.edu.pl

This directory contains the OGLE collection of Double Periodic Variables
toward the Galactic bulge.

The directory structure is as follows:

README            - this file

DPV.dat           - parameters of DPVs

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


Format of the file DPV.dat:
--------------------------------------------------------------------------
 Bytes  Format  Units   Description
--------------------------------------------------------------------------
  1- 19  A19    ---     Star's ID 
 21- 26  F6.3   mag     I-band magnitude corresponding to the maximum of the 
                        orbital cycle and mean brightness in the long cycle
 28- 33  F6.3   mag     V-band magnitude corresponding to the maximum of the 
                        orbital cycle and mean brightness in the long cycle
 35- 43  F9.6   days    Short period
 45- 52  F8.6   days    Uncertainty of the short period
 54- 63  F10.5  days    Time of short period minimum brightness (HJD-2450000)
 65- 71  F7.2   days    Long period
 73- 77  F5.2   days    Uncertainty of the long period
 79- 88  F10.5  days    Time of long period minimum brightness (HJD-2450000)
--------------------------------------------------------------------------


Format of the files with photometry (phot/I/OGLE-BLG-ECL-NNNNNN.dat,
phot/V/OGLE-BLG-ECL-NNNNNN.dat)
--------------------------------------------------------------------------
 Bytes  Format Units   Description
--------------------------------------------------------------------------
  1- 10  F10.5 days    Heliocentric Julian Day - 2450000
 12- 17  F6.3  mag     Magnitude
 19- 23  F5.3  mag     Uncertainty of magnitude
--------------------------------------------------------------------------


Finding charts are gzipped Postscript images. The names of the files are in
the form: ID.ps.gz. The finding charts are 60"x60" subframes of the I-band
reference frames centered on the stars. 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
the Catalog of Double Periodic Variables toward the galactic bulge should 
include the appropriate reference(s) to OGLE paper(s).