Index of /ogle/ogle4/OCVS/smc/dsct
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The OGLE Collection of Variable Stars
Delta Scuti Stars in the Small Magellanic Cloud
I. Soszynski, A. Udalski, J. Skowron, P. Pietrukowicz, M.K. Szymanski,
R. Poleski, D.M. Skowron, S. Kozlowski, P. Mroz, P. Iwanek, M. Wrona,
K. Ulaczyk, K. Rybicki, and M. Gromadzki
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soszynsk@astrouw.edu.pl
This directory contains the OGLE collection of delta Scuti-type stars
in the fields toward the Small Magellanic Cloud.
The directory structure is as follows:
README - this file
ident.dat - identification of stars
dsct.dat - parameters of delta Scuti stars
remarks.txt - remarks on selected objects
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 stars
paper.pdf - PDF version of the paper Soszynski et al. (2022),
Acta Astron. 72, 245, (arXiv:2301.04663) 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- 30 A10 --- Type (singlemode, multimode)
33- 34 I2 h Right ascension, equinox J2000.0 (hours)
36- 37 I2 m Right ascension, equinox J2000.0 (minutes)
39- 43 F5.2 s Right ascension, equinox J2000.0 (seconds)
45 A1 --- Declination, equinox J2000.0 (sign)
46- 47 I2 deg Declination, equinox J2000.0 (degrees)
49- 50 I2 arcmin Declination, equinox J2000.0 (arc minutes)
52- 55 F4.1 arcsec Declination, equinox J2000.0 (arc seconds)
58- 73 A16 --- OGLE-IV ID
75- 89 A15 --- OGLE-III ID
91-106 A16 --- OGLE-II ID
108- A --- Other designation (from VSX)
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Format of the file dsct.dat:
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Bytes Format Units Description
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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 F10.8 days Primary period
47- 56 F10.8 days Uncertainty of primary period
59- 68 F10.5 days Time of maximum brightness (HJD-2450000)
71- 75 F5.3 mag I-band amplitude (maximum-minimum)
78- 82 F5.3 --- Fourier coefficient R_21
84- 88 F5.3 --- Fourier coefficient phi_21
91- 95 F5.3 --- Fourier coefficient R_31
97-101 F5.3 --- Fourier coefficient phi_31
104-113 F10.8 days Secondary period (if available)
115-124 F10.8 days Uncertainty of secondary period
127-136 F10.5 days Time of maximum brightness (HJD-2450000)
139-143 F5.3 mag I-band amplitude (maximum-minimum)
146-150 F5.3 --- Fourier coefficient R_21
152-156 F5.3 --- Fourier coefficient phi_21
159-163 F5.3 --- Fourier coefficient R_31
165-169 F5.3 --- Fourier coefficient phi_31
172-181 F10.8 days Tertiary period (if available)
183-192 F10.8 days Uncertainty of tertiary period
195-204 F10.5 days Time of maximum brightness (HJD-2450000)
207-211 F5.3 mag I-band amplitude (maximum-minimum)
214-218 F5.3 --- Fourier coefficient R_21
220-224 F5.3 --- Fourier coefficient phi_21
227-231 F5.3 --- Fourier coefficient R_31
233-237 F5.3 --- Fourier coefficient phi_31
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Format of the photometry files (OGLE-SMC-DSCT-NNNN.dat):
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Bytes Format Units Description
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1- 10 F10.5 days Heliocentric Julian Day - 2450000
12- 17 F6.3 mag Magnitude
19- 23 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: OGLE-SMC-DSCT-NNNN.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 collection of delta Scuti-type stars should include the appropriate
reference(s) to OGLE paper(s).