=======================================================================
             The Optical Gravitational Lensing Experiment.
                The OGLE-III Catalog of Variable Stars.
          VIII. Type II Cepheids in the Small Magellanic Cloud

  I. Soszynski, A. Udalski, M.K. Szymanski, M. Kubiak, G. Pietrzynski,
              L. Wyrzykowski, K. Ulaczyk, and R. Poleski

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


This directory contains the catalog of type II Cepheids in the Small
Magellanic Cloud.

The directory structure is as follows:

README            - this file

ident.dat         - identification of stars
t2cep.dat         - observational parameters of type II Cepheids

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
                       
remarks.txt       - remarks on selected objects

pap.ps.gz         - postscript version of the paper Soszynski et al. (2010),
                    Acta Astron. 60, 91, (arXiv:1005.3544) describing the
                    catalog.


Format of the file ident.dat:
--------------------------------------------------------------------------
 Bytes  Format Units   Description
--------------------------------------------------------------------------
  1- 17  A17   ---     Type II Cepheid ID in the form OGLE-SMC-T2CEP-NN
 20- 27  A8    ---     OGLE-III field
 29- 34  I6    ---     OGLE-III database number
 37- 41  A5    ---     Subtype of Cepheids (BLHer, WVir, pWVir, RVTau)
 44- 45  I2    h       Right ascension, equinox 2000.0 (hours)
 47- 48  I2    m       Right ascension, equinox 2000.0 (minutes)
 50- 54  F5.2  s       Right ascension, equinox 2000.0 (seconds)
     56  A1    ---     Declination, equinox 2000.0 (sign)
 57- 58  I2    deg     Declination, equinox 2000.0 (degrees)
 60- 61  I2    arcmin  Declination, equinox 2000.0 (arc minutes)
 63- 66  F4.1  arcsec  Declination, equinox 2000.0 (arc seconds)
 68- 82  A15   ---     OGLE-II ID
 84- 88  A5    ---     GCVS ID
 90-     A     ---     Other designation
--------------------------------------------------------------------------

Format of the file t2cep.dat:
--------------------------------------------------------------------------
 Bytes  Format Units   Description
--------------------------------------------------------------------------
  1- 17  A17   ---     Type II Cepheid ID in the form OGLE-SMC-T2CEP-NN
 19- 24  F6.3  mag     Intensity mean I-band magnitude
 26- 31  F6.3  mag     Intensity mean V-band magnitude
 33- 43  F11.7 days    Period
 45- 53  F9.7  days    Uncertainty of period
 56- 65  F10.5 days    Time of maximum brightness (HJD-2450000)
 68- 72  F5.3  mag     I-band amplitude (maximum-minimum)
 75- 79  F5.3  ---     Fourier coefficient R_21
 81- 85  F5.3  ---     Fourier coefficient phi_21
 88- 92  F5.3  ---     Fourier coefficient R_31
 94- 98  F5.3  ---     Fourier coefficient phi_31
--------------------------------------------------------------------------

Finding charts are gzipped Postscript images. The names of the files are in
the form: OGLE-SMC-T2CEP-NN.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 type II Cepheids in the SMC should include the appropriate
reference(s) to OGLE paper(s).