Index of /ogle/ogle4/OCVS/lmc/t2cep

[ICO]NameLast modifiedSizeDescription
[PARENTDIR]Parent Directory  -  
[DIR]phot/2018-06-28 07:49 -  
[ ]pap.pdf2018-07-20 14:19 5.1M 
[TXT]remarks.txt2019-11-15 15:48 2.0K 
[ ]ident.dat2022-08-20 01:37 29K 
[ ]t2cep.dat2022-08-20 01:38 29K 
[DIR]fcharts/2022-08-20 01:38 -  
[ ]phot.tar.gz2022-08-20 01:38 1.4M 
[TXT]README2022-08-20 01:39 4.4K 
=======================================================================
               The OGLE Collection of Variable Stars
           Type II Cepheids in the Large Magellanic Cloud

      I. Soszynski, A. Udalski, M. K. Szymanski, L. Wyrzykowski,
   K. Ulaczyk, R. Poleski, P. Pietrukowicz, S. Kozlowski, D. Skowron,
           J. Skowron, P. Mroz, K. Rybicki, and P. Iwanek

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

This directory contains the OGLE catalog type II Cepheids in the Large
Magellanic Cloud.

The directory structure is as follows:

README            - this file

ident.dat         - identification of stars

t2cep.dat         - 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.pdf           - PDF version of the paper Soszynski et al. (2018),
                    Acta Astron. 68, 89, (arXiv:1807.00008) describing
                    the collection.


Format of the file ident.dat:
--------------------------------------------------------------------------
 Bytes  Format Units   Description
--------------------------------------------------------------------------
  1- 18  A18   ---     Star's ID
 21- 25  A5    ---     Subtype of type II Cepheids
 28- 29  I2    h       Right ascension, equinox J2000.0 (hours)
 31- 32  I2    m       Right ascension, equinox J2000.0 (minutes)
 34- 38  F5.2  s       Right ascension, equinox J2000.0 (seconds)
     40  A1    ---     Declination, equinox J2000.0 (sign)
 41- 42  I2    deg     Declination, equinox J2000.0 (degrees)
 44- 45  I2    arcmin  Declination, equinox J2000.0 (arc minutes)
 47- 50  F4.1  arcsec  Declination, equinox J2000.0 (arc seconds)
 53- 68  A16   ---     OGLE-IV ID 
 70- 84  A15   ---     OGLE-III ID
 86-100  A15   ---     OGLE-II ID
102-     A     ---     Other designation (from GCVS)
--------------------------------------------------------------------------

Format of the file t2cep.dat:
--------------------------------------------------------------------------
 Bytes  Format Units   Description
--------------------------------------------------------------------------
  1- 18  A18   ---     Star's ID
 21- 26  F6.3  mag     Intensity mean I-band magnitude
 28- 33  F6.3  mag     Intensity mean V-band magnitude
 36- 45  F10.7 days    Period
 47- 55  F9.7  days    Uncertainty of period
 58- 67  F10.5 days    Time of maximum brightness (HJD-2450000)
 70- 74  F5.3  mag     I-band amplitude (maximum-minimum)
 77- 81  F5.3  ---     Fourier coefficient R_21
 83- 87  F5.3  ---     Fourier coefficient phi_21
 90- 94  F5.3  ---     Fourier coefficient R_31
 96-100  F5.3  ---     Fourier coefficient phi_31
--------------------------------------------------------------------------

Format of the files with photometry (phot/I/OGLE-LMC-T2CEP-NNN.dat,
phot/V/OGLE-LMC-T2CEP-NNN.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 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 type II Cepheids in the Magellanic Clouds should include the
appropriate reference(s) to OGLE paper(s).


Updates:

2019-02-07  The collection extended with two first-overtone BL Her stars
            OGLE-LMC-T2CEP-290 and OGLE-LMC-T2CEP-291. For details see
            Soszynski et al. (2019).

2019-07-04  The collection extended with three type II Cepheids from
            OGLE-LMC-T2CEP-292 to OGLE-LMC-T2CEP-294 detected in the OGLE-IV
            outer fields. For details see: Soszynski et al. (2019), Acta
            Astron. 69, 87 (arXiv:1907.02073).

2022-08-20  1 additional type II Cepheid from the Gaia DR3 catalog
            (OGLE-LMC-T2CEP-295)