Index of /ogle/ogle4/OCVS/lmc/ecl
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The OGLE Collection of Variable Stars
Over 75 000 Eclipsing Binaries in the Magellanic Clouds
M. Glowacki, I. Soszynski, A. Udalski, M. K. Szymanski, J. Skowron,
D. M. Skowron, P. Mroz, P. Pietrukowicz, R. Poleski, S. Kozlowski,
P. Iwanek, M. Wrona, K. Ulaczyk, K. Rybicki, M. Gromadzki, M. Mroz,
and M. Urbanowicz
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mglowacki@astrouw.edu.pl
soszynsk@astrouw.edu.pl
This directory contains the OGLE catalog of eclipsing and ellipsoidal
binary systems in the Large Magellanic Cloud.
The directory structure is as follows:
README - this file
ident.dat - identification of stars
ecl.dat - parameters of eclipsing binary systems
ell.dat - parameters of ellipsoidal binary systems
phot/I/ - I-band OGLE-IV photometry of individual objects
phot/V/ - V-band OGLE-IV photometry of individual objects
phot.tar.gz - gzipped phot/ directory
fcharts/ - finding charts of individual objects
remarks.txt - remarks on selected objects
paper.pdf - PDF version of the paper Glowacki et al. (2025),
Acta Astron. .., ..., (arXiv:............) describing
the collection.
Format of the file ident.dat:
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Bytes Format Units Description
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1- 18 A18 --- Star's ID
21- 23 A3 --- Subtype (C - contact, NC - non-contact, CV - cata-
clysmic variable, ELL - ellipsoidal variable)
25- 26 I2 h Right ascension, equinox J2000.0 (hours)
28- 29 I2 m Right ascension, equinox J2000.0 (minutes)
31- 35 F5.2 s Right ascension, equinox J2000.0 (seconds)
37 A1 --- Declination, equinox J2000.0 (sign)
38- 39 I2 deg Declination, equinox J2000.0 (degrees)
41- 42 I2 arcmin Declination, equinox J2000.0 (arc minutes)
44- 47 F4.1 arcsec Declination, equinox J2000.0 (arc seconds)
50- 65 A16 --- OGLE-IV ID
67- 81 A15 --- OGLE-III ID
83- 97 A15 --- OGLE-II ID
99- A --- Other designation
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Format of the files ecl.dat and ell.dat:
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Bytes Format Units Description
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1- 18 A18 --- Star's ID
21- 26 F6.3 mag I-band magnitude at the maximum light
28- 33 F6.3 mag V-band magnitude at the maximum light
35- 46 F12.7 days Orbital period
49- 60 F12.4 days Epoch of of the primary eclipse (HJD)
63- 67 F5.3 mag Depth of the primary eclipse
69- 73 F5.3 mag Depth of the secondary eclipse
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Format of the files with photometry (phot/I/OGLE-LMC-ECL-NNNNN.dat,
phot/V/OGLE-LMC-ECL-NNNNN.dat)
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Bytes Format Units Description
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1- 13 F13.5 days Heliocentric Julian Day
15- 20 F6.3 mag Magnitude
22- 26 F5.3 mag Uncertainty of magnitude
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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 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 the
catalog of classical Cepheids in the Galactic bulge should include the
appropriate reference(s) to OGLE paper(s).