Index of /ogle/ogle4/OCVS/blg/rrlyr
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Over 78000 RR Lyrae Stars in the OGLE Galactic Bulge Fields
I. Soszynski, A. Udalski, M. K. Szymanski, P. Pietrukowicz, P. Mroz,
J. Skowron, S. Kozlowski, R. Poleski, D. Skowron, K. Ulaczyk,
K. Rybicki, P. Iwanek, M. Wrona, M. Gromadzki
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soszynsk@astrouw.edu.pl
This directory contains the OGLE catalog of RR Lyrae stars identified
in the fields toward the Galactic bulge.
The directory structure is as follows:
README - this file
ident.dat - identification of stars
RRab.dat - parameters of RRab stars
RRc.dat - parameters of RRc stars
RRd.dat - parameters of RRd stars
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
gc.dat - candidates for objects located in globular clusters
pap1.pdf - PDF version of the paper Soszynski et al. (2014),
Acta Astron. 64, 177, (arXiv:1410.1542) describing the
first part of the catalog.
pap2.pdf - PDF version of the paper Soszynski et al. (2019),
Acta Astron. 69, 321, (arXiv:2001.00025) describing the
second part of the catalog.
Format of the file ident.dat:
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Bytes Format Units Description
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1- 20 A20 --- Star's ID
23- 26 A4 --- Subtype of RR Lyr star (RRab, RRc, RRd, aRRd)
29- 30 I2 h Right ascension, equinox J2000.0 (hours)
32- 33 I2 m Right ascension, equinox J2000.0 (minutes)
35- 39 F5.2 s Right ascension, equinox J2000.0 (seconds)
41 A1 --- Declination, equinox J2000.0 (sign)
42- 43 I2 deg Declination, equinox J2000.0 (degrees)
45- 46 I2 arcmin Declination, equinox J2000.0 (arc minutes)
48- 51 F4.1 arcsec Declination, equinox J2000.0 (arc seconds)
54- 69 A16 --- OGLE-IV ID
71- 85 A15 --- OGLE-III ID
87-101 A15 --- OGLE-II ID
103- A --- Other designation (from VSX)
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Format of the files RRab.dat and RRc.dat:
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Bytes Format Units Description
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1- 20 A20 --- Star's ID
23- 28 F6.3 mag Intensity mean I-band magnitude
30- 35 F6.3 mag Intensity mean V-band magnitude
38- 47 F10.8 days Period
49- 58 F10.8 days Uncertainty of period
61- 70 F10.5 days Time of maximum brightness (HJD-2450000)
73- 77 F5.3 mag I-band amplitude (maximum-minimum)
80- 84 F5.3 --- Fourier coefficient R_21
86- 90 F5.3 --- Fourier coefficient phi_21
93- 97 F5.3 --- Fourier coefficient R_31
99-103 F5.3 --- Fourier coefficient phi_31
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Format of the files RRd.dat and aRRd.dat:
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Bytes Format Units Description
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1- 20 A20 --- Star's ID
23- 28 F6.3 mag Intensity mean I-band magnitude
30- 35 F6.3 mag Intensity mean V-band magnitude
38- 47 F10.8 days First-overtone period
49- 58 F10.8 days Uncertainty of first-overtone period
61- 70 F10.5 days Time of maximum brightness (HJD-2450000)
73- 77 F5.3 mag I-band amplitude (maximum-minimum)
80- 84 F5.3 --- Fourier coefficient R_21
86- 90 F5.3 --- Fourier coefficient phi_21
93- 97 F5.3 --- Fourier coefficient R_31
99-103 F5.3 --- Fourier coefficient phi_31
106-115 F10.8 days Fundamental-mode period
117-126 F10.8 days Uncertainty of fundamental-mode period
129-138 F10.5 days Time of maximum brightness (HJD-2450000)
141-145 F5.3 mag I-band amplitude (maximum-minimum)
148-152 F5.3 --- Fourier coefficient R_21
154-158 F5.3 --- Fourier coefficient phi_21
161-165 F5.3 --- Fourier coefficient R_31
167-171 F5.3 --- Fourier coefficient phi_31
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Finding charts are gzipped Postscript images. The names of the files are in
the form: OGLE-BLG-RRLYR-NNNNN.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 RR Lyrae stars in the Galactic bulge should include the appropriate
reference(s) to OGLE paper(s).
Updates:
2014-10-16 Reclassified OGLE-BLG-RRLYR-22097: RRd -> RRc
(thanks to Radoslaw Smolec)
2017-12-06 828 additional RR Lyrae stars (from OGLE-BLG-RRLYR-38290
to OGLE-BLG-RRLYR-39122; Soszynski et al. 2017, Acta
Astron. 67, 297).
Light curves supplemented with new datapoints, up to
August 2017.
Several stars reclassified and removed from the list.
2020-01-02 29075 additional RR Lyrae stars (from OGLE-BLG-RRLYR-39123
to OGLE-BLG-RRLYR-68197; Soszynski et al. 2019, Acta
Astron. 69, 321).
OGLE-BLG-RRLYR-16703 reclassified and removed from the list.
2020-07-21 Corrected coordinates for 707 RR Lyrae stars from the fields
BLG537, BLG538, BLG548, BLG568, BLG698, BLG699.
Removed 37 RR Lyrae stars that turned out to be duplicates
from overlapping fields.
OGLE-BLG-RRLYR-00225 reclassified as an anomalous Cepheid
(OGLE-GAL-ACEP-082) and removed from the list.
4 additional RR Lyrae stars (from OGLE-BLG-RRLYR-68198
to OGLE-BLG-RRLYR-68201).
2022-08-20 394 additional RR Lyrae stars from the Gaia DR3 catalog
and other sources (from OGLE-BLG-RRLYR-68202 to
OGLE-BLG-RRLYR-68595)
2024-03-26 OGLE-BLG-RRLYR-09254 reclassified back as an RR Lyrae star.