This directory contains paper and data on single mode second overtone
Cepheid candidates in the SMC.

***WARNING***

The content of this archive was revised on Apr. 1, 2000 due to revised
calibration of the OGLE photometric data. A small systematic effect in
the original calibration was found, mapped, and applied to the data.
This effect, caused by some scattered light in the instrument resulting
in non-perfect flat-fielding, affected only East/West edges of the
frames and amounted to 0.08 mag in the I-band and 0.05 mag in the B and
V-bands at the very edges of the field. On average the effect was very
small - of the order of 0.01-0.02 mag. 

We are very grateful to Dr. D.S. Graff (Ohio State University) for
pointing out to us this systematic effect.

*************

pap.ps.gz    --        Paper: "The Optical Gravitational Lensing Experiment.
                       Cepheids in the Magellanic Clouds. II. Single-Mode
                       Second Overtone Cepheids in the Small Magellanic Cloud."
                       A. Udalski, I. Soszynski,  M. Szymanski, M. Kubiak,
                       G. Pietrzynski, P. Wozniak, and K. Zebrun, 
                       Acta Astron. 1999, 49, 45.

fig[1-5].ps.gz  --     Full size Figures 1-5.

tab1.txt        --     Table with basic data on candidates (ASC-II format).

phot.tar        --     tar archive of phot/ subdirectory.

subdirectory phot/  --     photometry of individual objects:
 
    subdirectory  I/  -- photometry in the I-band
    subdirectory  V/  -- photometry in the V-band
    subdirectory  B/  -- photometry in the B-band
 
                         The file name is object_id.dat.gz in each of these
                         subdirectories. Each file contains 3 columns:
                         Hel JD, magnitude, error.