J/ApJS/260/46 Milky Way Mira variable stars from OGLE (Iwanek+, 2022)
The OGLE collection of variable stars: nearly 66,000 Mira stars in the Milky
Way.
Iwanek P., Soszynski I., Kozlowski S., Poleski R., Pietrukowicz P.,
Skowron J., Wrona M., Mroz P., Udalski A., Szymanski M.K., Skowron D.M.,
Ulaczyk K., Gromadzki M., Rybicki K., Ratajczak M.
<Astrophys. J. Suppl. Ser., 260, 46 (2022)>
=2022ApJS..260...46I 2022ApJS..260...46I
ADC_Keywords: Stars, variable; Stars, giant; Photometry, VRI; Milky Way
Keywords: Asymptotic giant branch stars ; Carbon stars ;
Mira variable stars ; Long period variable stars ;
Time series analysis ; Astrographic catalogs ; Catalogs ;
Sky surveys ; Galactic bulge ; Galactic center ; Milky Way Galaxy ;
Milky Way disk
Abstract:
We present a collection of 65,981 Mira-type variable stars found in
the Optical Gravitational Lensing Experiment (OGLE) project database.
Two-thirds of our sample (40,356 objects) are located in the Galactic
bulge fields, whereas 25,625 stars are in the Galactic disk. The vast
majority of the collection (47,532 objects) comprises new discoveries.
We provide basic observational parameters of the Mira variables:
equatorial coordinates, pulsation periods, I-band and V-band mean
magnitudes, I-band brightness amplitudes, and identifications in other
catalogs of variable stars. We also provide the I-band and V-band
time-series photometry collected since 1997 during the OGLE-II,
OGLE-III, and OGLE-IV phases. The classical selection process, i.e.,
being mostly based on the visual inspection of light curves by
experienced astronomers, has led to the high purity of the catalog. As
a result, this collection can be used as a training set for
machine-learning classification algorithms. Using overlapping areas of
adjacent OGLE fields, we estimate the completeness of the catalog to
be about 96%. We compare and discuss the statistical features of Miras
located in different regions of the Milky Way. We show examples of
stars that change their type over time, from a semiregular variable to
Mira and vice versa. This data set is perfectly suited to studying the
three-dimensional structure of the Milky Way, and it may help to
explain the puzzle of the X-shaped bulge.
Description:
Historically, the first Optical Gravitational Lensing Experiment
(OGLE) observations were taken in 1992, using the 1.0m Swope Telescope
located at the Las Campanas Observatory, Chile. The second phase of
the OGLE survey (OGLE-II) started in 1997, at the Las Campanas
Observatory, with the new 1.3m Warsaw Telescope dedicated to the
project. Since then, regular monitoring of the Galactic bulge (BLG),
Galactic disk, and Magellanic Clouds has been carried out. During the
two decades until 2020, the OGLE project went through two more phases:
OGLE-III (2001-2009) and OGLE-IV (2010-2020; Udalski+ 2015AcA....65....1U 2015AcA....65....1U).
The OGLE observations were carried out in the Johnson V-band (mean
wavelength of 0.55um) and Cousins I-band (mean wavelength of 0.81um)
filters.
In total, the OGLE-IV survey covers ∼3000 square degrees of the sky.
To date, only one catalog of LPVs toward the BLG has been published,
based on the OGLE-III data (Soszynski+ 2013, J/AcA/63/21).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 132 65981 Identifications and equatorial coordinates
for all Miras; corrected version
table2.dat 52 65981 Observational parameters of each Mira
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See also:
B/vsx : AAVSO International Variable Star Index VSX (Watson+, 2006-2014)
B/gcvs : General Catalogue of Variable Stars (Samus+, 2007-2017)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
J/AcA/50/421 : OGLE-II DIA BUL_SC1 field (Wozniak, 2000)
J/MNRAS/369/751 : Near-infrared photometry of carbon stars (Whitelock+, 2006)
J/MNRAS/399/1709 : Near-infrared survey of Miras (Matsunaga+, 2009)
J/AcA/59/239 : VI LCs of LMC long-period variables (Soszynski+, 2009)
J/ApJ/721/L28 : Red clump stars in Gal. Bulge from OGLE-III (Nataf+, 2010)
J/ApJ/723/1195 : SAGE AGB candidates (Riebel+, 2010)
J/AcA/61/217 : VI LCs of SMC long-period variables (Soszynski+, 2011)
J/AcA/63/379 : OGLE-III var. stars in Gal. disk area (Pietrukowicz+, 2013)
J/AcA/63/21 : VI light curves of Galactic LPVs (Soszynski+, 2013)
J/MNRAS/428/2216 : JHKs photometry of AGB stars in NGC 6822 (Whitelock+, 2013)
J/ApJS/213/9 : Catalina Surveys periodic variable stars (Drake+, 2014)
J/ApJ/783/130 : Parallaxes of high mass star forming regions (Reid+, 2014)
J/ApJ/788/48 : X-ray through NIR photometry of NGC 2617 (Shappee+, 2014)
J/MNRAS/452/910 : IC 1613 asymptotic giant branch variables (Menzies+, 2015)
J/A+A/586/A49 : r- and s- process elements in MW disk (Battistini+, 2016)
J/MNRAS/469/3688 : CSS Periodic Variable Star Catalogue (Drake+, 2017)
J/ApJS/232/16 : Mira stars discovered in LAMOST DR4 (Yao+, 2017)
J/AJ/153/170 : M33 Synoptic Stellar Survey. II. Mira var. (Yuan+, 2017)
J/AJ/156/241 : A first cat. of variable stars with ATLAS (Heinze+, 2018)
J/ApJ/857/67 : HST obs. of Mira candidates in NGC 4258 (Huang+, 2018)
J/AJ/156/112 : NIR Mira period-luminosity relations in M33 (Yuan+, 2018)
J/ApJ/884/20 : OGLE-III Mira variables in the MCs (Bhardwaj+, 2019)
J/ApJ/887/82 : Galactic carbon stars infrared spectroscopy (Kraemer+, 2019)
J/other/Sci/365.478 : Milky Way classical Cepheids sample (Skowron+, 2019)
J/A+A/622/A120 : Mass loss from Miras (Uttenthaler, 2019)
J/ApJS/247/44 : Mira-like variables from the KELT survey (Arnold+, 2020)
J/ApJS/249/18 : The ZTF catalog of periodic variable stars (Chen+, 2020)
J/A+A/636/A48 : VMC Survey. XXXVII. MC AGB stars (Groenewegen+, 2020)
J/ApJ/889/5 : HST obs. of Mira variables in NGC1559 (Huang+, 2020)
J/ApJS/257/23 : Multiwavelength obs. of Miras in the LMC (Iwanek+, 2021)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 A5 --- --- [OGLE-]
6- 19 A14 --- OGLE Star identifier (BLG-LPV-NNNNNN or
GD-LPV-NNNNNN)
21- 24 A4 --- Type Type (always "Mira") (1)
26- 28 A3 --- Loc Location of the star in the Milky Way
("BLG"=Galactic bulge or "GD"=Galactic disk)
30- 31 I2 h RAh [5/19] Hour of Right Ascension (J2000)
33- 34 I2 min RAm Minute of Right Ascension (J2000)
36- 40 F5.2 s RAs Second of Right Ascension (J2000)
42- 42 A1 --- DE- Sign of the Declination (J2000)
43- 44 I2 deg DEd Degree of Declination (J2000)
46- 47 I2 arcmin DEm Arcminute of Declination (J2000)
49- 52 F4.1 arcsec DEs Arcsecond of Declination (J2000)
54- 69 A16 --- OGLEIV OGLE-IV ID (BLGFFF.FF.NNNNNN, GDFFFF.FF.NNNNN or
DGFFFF.FF.NNNNN)
71- 85 A15 --- OGLEIII OGLE-III ID
87-102 A16 --- OGLEII OGLE-II ID (BULSCNNNNNNNN, SCOSCNNNNNNN,
NORSCNNNNNNN or CARSCNNNNNNN)
104-132 A29 --- OName Other designation (2)
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Note (1): The variability type is the same for each object: the Miras
collection will be part of a much larger collection of LPVs
in the Milky Way.
Note (2): Identifiers from other catalogs (the best match),
i.e. VSX/ASAS-SN/ZTF catalogs.
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Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 A5 --- --- [OGLE-]
6- 19 A14 --- OGLE Star identifier (BLG-LPV-NNNNNN)
21- 23 A3 --- Loc Location of the star in the Milky Way
25- 30 F6.3 mag Imag [9.57/20.9] Intensity mean I-band magnitude
32- 37 F6.3 mag Vmag [12.53/23.82]? Intensity mean V-band magnitude (1)
39- 45 F7.2 d Per [64.2/1748] Primary pulsation period
47- 52 F6.3 mag Iamp [0.8/22.95] I-band amplitude of the primary period
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Note (1): In total V-band light curves are available for 19,779 stars.
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Acknowledgements:
Patryk Iwanek [piwanek at astrouw.edu.pl] and
August Muench [august.muench at aas.org] for the updated version of Table 1
History:
From electronic version of the journal
14-Sep-2022:Insert into VizieR
15-Dec-2022:Table 1 corrected for some misprints in declination signs;
sent by the author and AAS editors.
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 02-Aug-2022