J/ApJS/237/28 WISE catalog of periodic variable stars (Chen+, 2018)
A Wide-field Infrared Survey Explorer (WISE) catalog of periodic variable stars.
Chen X., Wang S., Deng L., de Grijs R., Yang M.
<Astrophys. J. Suppl. Ser., 237, 28 (2018)>
=2018ApJS..237...28C 2018ApJS..237...28C
ADC_Keywords: Photometry, infrared; Stars, variable; Binaries, eclipsing
Keywords: catalogs ; distance scale ; Galaxy: disk ; Galaxy: structure ;
infrared: stars ; stars: variables: general
Abstract:
We have compiled the first all-sky mid-infrared variable-star catalog
based on Wide-field Infrared Survey Explorer five-year survey data.
Requiring more than 100 detections for a given object, 50282
carefully and robustly selected periodic variables are discovered, of
which 34769 (69%) are new. Most are located in the Galactic plane and
near the equatorial poles. A method to classify variables based on
their mid-infrared light curves is established using known variable
types in the General Catalog of Variable Stars. Careful classification
of the new variables results in a tally of 21427 new EW-type
eclipsing binaries, 5654 EA-type eclipsing binaries, 1312 Cepheids,
and 1231 RR Lyrae. By comparison with known variables available in the
literature, we estimate that the misclassification rate is 5% and 10%
for short- and long- period variables, respectively. A detailed
comparison of the types, periods, and amplitudes with variables in the
Catalina catalog shows that the independently obtained classifications
parameters are in excellent agreement. This enlarged sample of
variable stars will not only be helpful to study Galactic structure
and extinction properties, but can also be used to constrain stellar
evolution theory and provide potential candidates for the James Webb
Space Telescope.
Description:
WISE began to operate in survey mode in 2010 January; it covers the
full sky once every half a year. The solid hydrogen cryostat was
depleted in 2010 September, upon which the four-month NEOWISE
Post-Cryogenic Mission continued to accomplish the second all-sky
coverage. The data resulting from these two epochs were packaged as
the ALLWISE Data Release, characterized by an enhanced accuracy and
sensitivity compared to the WISE All-Sky Data Release. Next, WISE
entered into a hibernating state for two years and was reactivated in
2013 October. WISE operations are currently continuing with a mission
called the "near-Earth object WISE reactivation (NEOWISE-R) mission."
At present, four years of NEOWISE-R data have been released.
In this paper, we have collected five-year ALLWISE and NEOWISE-R data
to detect periodic variables. Based on 2.7 million high-probability
candidates in ALLWISE, we found 50282 periodic variables and an
additional 17000 suspected variables.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 208 50282 WISE variables catalog
table6.dat 46 17738 WISE suspected variables catalog
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See also:
II/328 : AllWISE Data Release (Cutri+ 2013)
J/AJ/108/1016 : Kinematics of local RR lyrae stars. I. (Layden, 1994)
J/AJ/115/193 : RR Lyrae V light curves (Layden, 1998)
J/AJ/119/1901 : ROTSE all-sky surveys for variable stars (Akerlof+, 2000)
J/AJ/132/714 : QUEST RR Lyrae survey. II. Halo overdensities (Vivas+, 2006)
J/A+A/492/171 : VIc light curves of NGC 6791 V20 (Grundahl+, 2008)
J/AcA/58/163 : VI light curves of LMC classical Cepheids (Soszynski+, 2008)
J/AcA/58/293 : Type-II and anomalous Cepheids in LMC (Soszynski+, 2008)
J/AJ/138/466 : NSVS variables automated classification (Hoffman+, 2009)
J/AcA/59/1 : VI light curves of LMC RR Lyrae stars (Soszynski+, 2009)
J/ApJ/708/717 : Light curve templates of RR Lyrae stars (Sesar+, 2010)
J/ApJ/763/32 : Galactic halo RRab stars from CSS (Drake+, 2013)
J/MNRAS/429/385 : Short-period var. near Galactic Centre (Matsunaga+, 2013)
J/AJ/146/101 : LINEAR. III. Cat. of periodic variables (Palaversa+, 2013)
J/ApJS/213/9 : Catalina Surveys periodic variable stars (Drake+, 2014)
J/MNRAS/441/715 : Mid-infrared study of RR Lyrae stars (Gavrilchenko+, 2014)
J/A+A/566/A37 : Iron abundances for 42 Galactic Cepheids (Genovali+, 2014)
J/ApJ/792/30 : NEOWISE magnitudes for near-Earth objects (Mainzer+, 2014)
J/A+A/576/A30 : NIR LC templates for classical Cepheids (Inno+, 2015)
J/A+A/591/A145 : VVV Survey outer bulge RRab stars (Gran+, 2016)
J/ApJ/832/176 : Classical Cepheids in MCs. I. LMC disk (Inno+, 2016)
J/AJ/153/154 : LMC NIR survey. IV. Type II Cepheid var. (Bhardwaj+, 2017)
J/MNRAS/469/3688 : CSS Periodic Variable Star Catalogue (Drake+, 2017)
J/A+A/605/A79 : TGAS Cepheids and RR Lyrae stars (Gaia Collaboration+, 2017)
J/AJ/153/179 : VVV Survey RR Lyr stars in Galactic plane (Minniti+, 2017)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 A4 --- --- [WISE]
5- 20 A16 --- WISE WISE variables catalog identifier
(JHHMMSS.s+DDMMSS)
22- 26 I5 --- Seq [1/68200] Internal source identifier
28- 36 F9.5 deg RAdeg Right Ascension in decimal degrees (J2000)
38- 46 F9.5 deg DEdeg Declination in decimal degrees (J2000)
48- 53 F6.3 mag W1mag [7.2/15] Mean WISE W1 (3.35um) band magnitude
55- 60 F6.3 mag W2mag [7.2/15] Mean WISE W2 (4.6um) band magnitude
62- 72 F11.7 d Per [0.17/132.6] Period
74- 80 F7.5 d e_Per [1e-05/1] Period uncertainty
divided by the period
82- 86 I5 --- Num [58/17242] Number of detections
88- 92 F5.3 mag AmpFF [0.03/3] Amplitude from Fourier fitting
94- 98 F5.3 mag Amp [0.08/2.8] Direct amplitude in 10-90% range (1)
100-105 F6.3 --- R21 [0.001/34.8] Ratio of a2/a1
107-111 F5.3 --- phi21 [1/3] The phase difference φ2-2*φ1
113-117 F5.3 --- a2 [0/2.4] Fourier a2 value
119-123 F5.3 --- a4 [0/0.5] Fourier a4 value
125-132 F8.3 mag Jmag [7.4/17.8]?=9999 2MASS J band magnitude
134-141 F8.3 mag Hmag [7.3/15.5]?=9999 2MASS H band magnitude
143-150 F8.3 mag Ksmag [7.3/15.3]?=9999 2MASS Ks band magnitude
152-159 F8.3 mag W3mag [3.6/14]?=9999 WISE W3 (11.6um) band magnitude
161-168 F8.3 mag W4mag [-0.5/10.3]?=9999 WISE W4 (22.1um) band
magnitude
170-180 F11.7 deg GLON Galactic longitude
182-192 F11.7 deg GLAT Galactic latitude
194-208 A15 --- Type Variable type (2)
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Note (1): of the magnitude distribution (see Section 5.4 for details).
Note (2): Criteria adopted to classify different variables (table 1):
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Type Selection criteria
------------------------------------------------------------------------------
RR 0.316<P<1.0days, φ21<1.9π (3070 sources)
CepI W12JK<0, P>2.24days, Amp<0.5mag, 1.6π<φ21<2.1π
(867 sources)
CepI/CepII W12JK<0, P>2.24days, Amp>0.5mag (587 sources)
W12JK<0, P>2.24days, Amp<0.5mag, |φ21-1.85π|>0.25π
CepII/ACep/CepI 1.0<P<2.24days, φ21<1.9π (231 sources)
CepI/EA P>2.24days, W12JK<0, |φ21-2.0π|<0.12π,
0.15<R31<0.22 (87 sources)
EW a4<a2(a2+0.125) (30884 sources)
EA a4>a2(a2+0.375)
a2(a2+0.125)<a4<a2(a2+0.375), P>1.0days
(7519 sources)
EW/EA a2(a2+0.125)<a4<a2(a2+0.375), P<0.5days
(4263 sources)
Misc 0.16<P<0.316days, Amp<0.15mag
1.0<P<2.24days, φ21>2.1π (933 sources)
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Note: W12JK=W1-W2-0.12(J-Ks).
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Byte-by-byte Description of file: table6.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 A4 --- --- [WISE]
5- 20 A16 --- WISE WISE variables catalog identifier
(JHHMMSS.s+DDMMSS)
22- 26 I5 --- Seq [20/68203] Internal source identifier
28- 36 F9.5 deg RAdeg Right Ascension in decimal degrees (J2000)
38- 46 F9.5 deg DEdeg Declination in decimal degrees (J2000)
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Nomenclature note:
WISE sources are in Simbad.
History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 01-Oct-2018