J/A+A/573/A100 WFCAM Variable Star Catalog (Ferreira Lopes+, 2015)
The WFCAM multiwavelength Variable Star Catalog.
Ferreira Lopes C.E., Dekany I., Catelan M., Cross N.J.G., Angeloni R.,
Leao I.C., De Medeiros J.R.
<Astron. Astrophys. 573, A100 (2015)>
=2015A&A...573A.100F 2015A&A...573A.100F
ADC_Keywords: Stars, variable ; Photometry, infrared
Keywords: stars: variables: general - infrared: stars - dust, extinction -
stars: formation - techniques: photometric - methods: analytical
Abstract:
Stellar variability in the near-infrared (NIR) remains largely
unexplored. The exploitation of public science archives with
data-mining methods offers a perspective for a time-domain exploration
of the NIR sky.
We perform a comprehensive search for stellar variability using the
optical-NIR multiband photometric data in the public Calibration
Database of the WFCAM Science Archive (WSA), with the aim of
contributing to the general census of variable stars and of extending
the current scarce inventory of accurate NIR light curves for a number
of variable star classes.
Description:
Standard data-mining methods were applied to extract and fine-tune
time-series data from the WSA. We introduced new variability indices
designed for multiband data with correlated sampling, and applied them
for preselecting variable star candidates, i.e., light curves that are
dominated by correlated variations, from noise-dominated ones.
Preselection criteria were established by robust numerical tests for
evaluating the response of variability indices to the colored noise
characteristic of the data. We performed a period search using the
string-length minimization method on an initial catalog of 6551
variable star candidates preselected by variability indices. Further
frequency analysis was performed on positive candidates using three
additional methods in combination, in order to cope with aliasing.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 147 275 Periodic objects in the WFCAM Variable Star Catalog
(C1)
table6.dat 147 44 Objects showing no main periodicity in the
WFCAM Variable Star Catalog (C2)
table8.dat 147 15 Periodic objects in the WFCAM Variable Star Catalog
non-detection as variables by our analysis (C3)
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See also:
B/gcvs : General Catalogue of Variable Stars (Samus+ 2007-2013)
Byte-by-byte Description of file: table4.dat table6.dat table8.dat
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Bytes Format Units Label Explanations
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1- 12 I12 --- WSA WSA identification number
14- 18 A5 --- --- [WVSC-]
19- 21 I3 --- WVSC [1/334] WVSC identification number
23- 48 A26 --- Name Other name (not in table6)
50- 59 F10.6 deg RAdeg Right ascension (J2000)
62- 71 F10.6 deg DEdeg Declination (J2000)
74- 82 A9 --- Type Variable type (1)
83- 92 F10.6 d Per [0.004/589]? Period
94- 99 F6.3 mag <Zmag> ?=-9.999 Mean Z magnitude
101-106 F6.3 mag <Ymag> ?=-9.999 Mean Y magnitude
108-113 F6.3 mag <Jmag> Mean H magnitude
115-120 F6.3 mag <Hmag> ?=-9.999 Mean H magnitude
122-127 F6.3 mag <Kmag> ?=-9.999 Mean K magnitude
129-131 I3 --- o_<Zmag> [0/147] Number of observation in Z band
133-135 I3 --- o_<Ymag> [0/142] Number of observation in Y band
137-139 I3 --- o_<Jmag> [1/165] Number of observation in J band
141-143 I3 --- o_<Hmag> [0/160] Number of observation in H band
145-147 I3 --- o_<Kmag> [0/176] Number of observation in K band
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Note (1): The abbreviations of variability types follow the same convention as
the GCVS (Samus et al., 1997, Cat. B/gcvs).
Uncertain classifications are marked with '?'.
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Acknowledgements:
From electronic version of the journal
(End) Patricia Vannier [CDS] 24-Dec-2014