J/A+A/555/A63 Semi-sinusoidal variability with CoRoT (de Medeiros+, 2013)
Overview of semi-sinusoidal stellar variability with the CoRoT satellite.
De Medeiros J.R., Ferreira Lopes C.E., Leao I.C., Canto Martins B.L.,
Catelan M., Baglin A., Vieira S., Bravo J.P., Cortes C., de Freitas D.B.,
Janot-Pacheco E., Maciel S.C., Melo C.H.F., Osorio Y., Porto de Mello G.F.,
Valio A.
<Astron. Astrophys. 555, A63 (2013)>
=2013A&A...555A..63D 2013A&A...555A..63D
ADC_Keywords: Stars, variable ; Stars, late-type ; Photometry, UBV ;
Photometry, infrared
Keywords: stars: variables: general - stars: rotation - techniques: photometric
Abstract:
To date, the CoRoT space mission has produced more than 124471
light curves. Classifying these curves in terms of unambiguous
variability behavior is mandatory for obtaining an unbiased
statistical view on their controlling root-causes.
The present study provides an overview of semi-sinusoidal light curves
observed by the CoRoT exo-field CCDs.
We selected a sample of 4206 light curves presenting well-defined
semi-sinusoidal signatures. The variability periods were computed
based on Lomb-Scargle periodograms, harmonic fits, and visual
inspection.
Description:
Variability periods, amplitudes, and signal-to-noise ratio for 4,206
CoRoT rotating candidates, which present well-defined semi-sinusoidal
photometric variations. In addition to variability parameters, CoRoT
ID and run, equatorial coordinates, spectral type, luminosity class,
and B and V magnitudes from the CoRoTSky database, as well as J, H,
and Ks magnitudes from the 2MASS database are given.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 139 4206 CoRoT, 2MASS, and variability parameters for the
4,206 CoRoT targets with semi-sinusoidal light curves
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See also:
B/corot : CoRoT observation log Release 12 (CoRoT, 2009-2013)
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 9 I9 --- CoRoT CoRoT ID (1)
13- 19 F7.3 deg RAdeg Right ascension, J2000 (1)
22- 28 F7.3 deg DEdeg Declination, J2000 (1)
32- 36 A5 --- SpType Spectral type from CoRoTSky (1) (2)
40- 45 F6.3 mag Bmag ?=-1 B magnitude from CoRoTSky (1)
49- 54 F6.3 mag Vmag ?=-1 V magnitude from CoRoTSky (1)
56- 66 A11 --- Run CoRoT run (1)
70- 75 F6.3 mag Jmag 2MASS J magnitude (3)
79- 84 F6.3 mag Hmag 2MASS H magnitude (3)
88- 93 F6.3 mag Kmag 2MASS Ks magnitude (3)
96-102 F7.3 d Per Variability period
106-112 F7.4 d e_Per Period uncertainty
117-122 F6.4 mag Amp Mean variability amplitude
127-132 F6.4 mag e_Amp Amplitude uncertainty
135-139 F5.1 --- S/N Signal-to-noise ratio of the photometric
variability
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Note (1): From the Archive of the CoRoT Data Center (CoRoT Data Center 2013;
see Cat. B/corot).
Note (2): Unknown types represented by "---".
Note (3): From the 2MASS All-Sky Catalog of Point Sources (2003, Cat. II/246).
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Acknowledgements:
Izan de Castro Leao, izan(at)dfte.ufrn.br
References:
CoRoT team 2009-2013 (CoRoT Data Center 2013),
Archive of the CoRoT Data Center
(End) Jose Renan de Medeiros [UFRN, Brazil], Patricia Vannier [CDS] 13-Jun-2013