J/AcA/69/321 OGLE RR Lyrae stars in Galactic bulge and disk (Soszynski+, 2019)
Over 78 000 RR Lyrae stars in the Galactic bulge and disk from the OGLE survey.
Soszynski I., Udalski A., Wrona M., Szymanski M.K., Pietrukowicz P.,
Skowron J., Skowron D., Poleski R., Kozlowski S., Mroz P., Ulaczyk K.,
Rybicki K., Iwanek P., Gromadzki M.
<Acta Astron. 69, 321 (2019)>
=2019AcA....69..321S 2019AcA....69..321S (SIMBAD/NED BibCode)
+2020AcA....70..121P 2020AcA....70..121P
ADC_Keywords: Milky Way ; Stars, variable ; Photometry, UBVRI
Keywords: stars: variables: RR Lyrae - stars: oscillations - Galaxy: bulge -
Galaxy: disk - catalogs
Abstract:
We present an upgrade of the OGLE Collection of RR Lyrae stars in the
Galactic bulge and disk.
The size of our sample has been doubled and reached 78350 RR Lyr
variables, of which 56508 are fundamental-mode pulsators (RRab
stars), 21321 pulsate solely in the first-overtone (RRc stars), 458
are classical double-mode pulsators (RRd stars), and 63 are anomalous
RRd variables (including five triple-mode pulsators). For all the
newly identified RR Lyr stars, we publish time-series photometry
obtained during the OGLE Galaxy Variability Survey.
We present the spatial distribution of RR Lyr stars on the sky,
provide a list of globular clusters hosting RR Lyr variables, and
discuss the Petersen diagram for multimode pulsators. We find new RRd
stars belonging to a compact group in the Petersen diagram (with
period ratios P1O/PF∼0.74 and fundamental-mode periods PF∼0.44d)
and we show that their spatial distribution is roughly spherically
symmetrical around the Milky Way center.
Description:
We carried out a systematic search for RR Lyr stars in the OGLE GVS
fields covering Galactic disk and outer bulge. We identified more than
39000 RR Lyr stars, which doubles the number of Galactic RR Lyr stars
included in the OCVS. The explored area of the sky was increased by a
factor of 15 compared to the regular OGLE footprint in the Galactic
bulge.
About 40% of the newly identified RR Lyr stars have not been included
in any existing catalog of pulsating stars, but the greatest advantage
of our collection is an exceptionally high level of completeness (94%)
and a very low contamination. Our sample is complementary to other
large catalogs of RR Lyr stars in the Milky Way halo. The
astrophysical potential of the OGLE collection of RR Lyr stars in the
Galactic bulge and disk cannot be overstated. It allows one to study
three dimensional structure of the old stellar component in the
vicinity of the Galactic plane and in the bulge-halo transition
region, to answer the question what fraction of the sample is inherent
to the bulge and disk and what fraction is just passing by from the
halo population, to explore the abundance patterns in the Milky Way,
to investigate globular clusters, and interstellar matter
distribution. We are also convinced that OGLE time-series photometry
will be useful in a variety of asteroseismological analyses.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
gdident.dat 126 11658 Galactic disk identification of stars
(20 Aug 2022 version)
blgident.dat 123 68508 Galactic bulge identification of stars
(20 Aug 2022 version)
blgrrab.dat 103 48859 Galatic bulge parameters of RRab stars
gdrrab.dat 103 8880 Galactic disk parameters of RRab stars
blgrrc.dat 103 19267 Galatic bulge parameters of RRc stars
gdrrc.dat 103 2625 Galactic disk parameters of RRc stars
blgarrd.dat 171 48 Galctic bulge parameters of aRRd stars
blgrrd.dat 171 334 Galactic bulge parameters of RRd stars
gdarrd.dat 171 16 Galactic disk parameters of aRRd stars
gdrrd.dat 171 137 Galactic disk parameters of RRd stars
table2.dat 68 5 Triple-mode RR Lyr stars in the
Galactic bulge and disk
blggc.dat 110 655 Galactic bulge RR Lyr stars that are candidates
for the globular cluster members
gdgc.dat 35 13 Galactic disk RR Lyr stars that are candidates
for the globular cluster members
blgrem.dat 103 125 Galacitc bulge variable remarks
gdrem.dat 91 12 Galacitc disk variable remarks
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Byte-by-byte Description of file: gdident.dat blgident.dat
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Bytes Format Units Label Explanations
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1- 20 A20 --- Name Star's ID
(OGLE-BLG-RRLYR-NNNNN or OGLE-GD-RRLYR-NNNNN)
23- 26 A4 --- Type Subtype of RR Lyr star (RRab, RRc, RRd, aRRd)
29- 30 I2 h RAh Right ascension (J2000.0)
32- 33 I2 min RAm Right ascension (J2000.0)
35- 39 F5.2 s RAs Right ascension (J2000.0)
41 A1 --- DE- Declination sign (J2000.0)
42- 43 I2 deg DEd Declination (J2000.0)
45- 46 I2 arcmin DEm Declination (J2000.0)
48- 51 F4.1 arcsec DEs Declination (J2000.0)
54- 69 A16 --- OGLE-IV OGLE-IV ID
71- 85 A15 --- OGLE-III OGLE-III ID
87-101 A15 --- OGLE-II OGLE-II ID
103-126 A24 --- OName Other designation (from VSX)
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Byte-by-byte Description of file: blgrrab.dat gdrrab.dat blgrrc.dat gdrrc.dat
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Bytes Format Units Label Explanations
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1- 20 A20 --- Name Star's ID
(OGLE-BLG-RRLYR-NNNNN or OGLE-GD-RRLYR-NNNNN)
23- 28 F6.3 mag <Imag> Intensity mean I-band magnitude
30- 35 F6.3 mag <Vmag> ?=- Intensity mean V-band magnitude
38- 47 F10.8 d Per Period
49- 58 F10.8 d e_Per Uncertainty of period
61- 70 F10.5 d t0 Time of maximum brightness (HJD-2450000)
73- 77 F5.3 mag Iamp I-band amplitude (maximum-minimum)
80- 84 F5.3 --- R21 Fourier coefficient R21
86- 90 F5.3 --- phi21 ?=- Fourier coefficient phi21
93- 97 F5.3 --- R31 Fourier coefficient R31
99-103 F5.3 --- phi31 ?=- Fourier coefficient phi31
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Byte-by-byte Description of file: blgarrd.dat blgrrd.dat gdarrd.dat gdrrd.dat
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Bytes Format Units Label Explanations
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1- 20 A20 --- Name Star's ID
(OGLE-BLG-RRLYR-NNNNN or OGLE-GD-RRLYR-NNNNN)
23- 28 F6.3 mag <Imag> Intensity mean I-band magnitude
30- 35 F6.3 mag <Vmag> ?=- Intensity mean V-band magnitude
38- 47 F10.8 d Per1 First-overtone period
49- 58 F10.8 d e_Per1 Uncertainty of first-overtone period
61- 70 F10.5 d t0.1 Time of maximum brightness (HJD-2450000)
73- 77 F5.3 mag Iamp1 I-band amplitude (maximum-minimum)
for first-overtone period
80- 84 F5.3 --- R21.1 Fourier coefficient R_21
for first-overtone period
86- 90 F5.3 --- phi21.1 ?=- Fourier coefficient phi_21
for first-overtone period
93- 97 F5.3 --- R31.1 Fourier coefficient R_31
for first-overtone period
99-103 F5.3 --- phi31.1 ?=- Fourier coefficient phi_31
for first-overtone period
106-115 F10.8 d Per0 Fundamental-mode period
117-126 F10.8 d e_Per0 Uncertainty of fundamental-mode period
129-138 F10.5 d t0.0 Time of maximum brightness (HJD-2450000)
for fundamental-mode period
141-145 F5.3 mag Iamp0 I-band amplitude (maximum-minimum)
for fundamental-mode period
148-152 F5.3 --- R21.0 Fourier coefficient R_21
for fundamental-mode period
154-158 F5.3 --- phi21.0 ?=- Fourier coefficient phi_21
for fundamental-mode period
161-165 F5.3 --- R31.0 Fourier coefficient R_31
for fundamental-mode period
167-171 F5.3 --- phi31.0 ?=- Fourier coefficient phi_31
for fundamental-mode period
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 20 A20 --- Name Star's ID
(OGLE-BLG-RRLYR-NNNNN or OGLE-GD-RRLYR-NNNNN)
22- 30 F9.7 d Per0 Fundamental-mode period
32- 36 F5.3 mag Iamp0 I-band amplitude (maximum-minimum)
for fundamental-mode period
38- 46 F9.7 d Per1 First-overtone period
48- 52 F5.3 mag Iamp1 I-band amplitude (maximum-minimum)
for first-overtone period
54- 62 F9.7 d Per23 Second|third period
64- 68 F5.3 mag Iamp23 I-band amplitude (maximum-minimum)
for second|third period
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Byte-by-byte Description of file: blggc.dat gdgc.dat
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Bytes Format Units Label Explanations
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1- 20 A20 --- Name Star's ID
(OGLE-BLG-RRLYR-NNNNN or OGLE-GD-RRLYR-NNNNN)
23- 32 A10 --- Cluster Cluster name
33- 37 A5 --- VName Variable name
41-110 A70 --- Com Comments
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Byte-by-byte Description of file: blgrem.dat gdrem.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 20 A20 --- Name Star's ID
(OGLE-BLG-RRLYR-NNNNN or OGLE-GD-RRLYR-NNNNN)
22-103 A82 --- Rem Remarks
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History:
Copied at ftp://ftp.astrouw.edu.pl/ogle/ogle4/OCVS/blg/rrlyr/,
ftp://ftp.astrouw.edu.pl/ogle/ogle4/OCVS/gd/rrlyr/
(End) Patricia Vannier [CDS] 12-May-2023