J/MNRAS/424/11 Rotation of field stars from CoRoT data (Affer+, 2012)
The rotation of field stars from CoRoT data.
Affer L., Micela G., Favata F., Flaccomio E.
<Mon. Not. R. Astron. Soc., 424, 11-22 (2012)>
=2012MNRAS.424...11A 2012MNRAS.424...11A
ADC_Keywords: Stars, nearby ; Stars, variable ; Photometry
Keywords: Stars: rotation - stars: solar-type - solar neighbourhood
Abstract:
We present period measurements of a large sample of field stars in the
solar neighbourhood, observed by the COnvection ROtation and planetary
Transits (CoRoT) satellite in two different directions of the Galaxy.
The presence of a period was detected using the Lomb-Scargle
normalized periodogram technique and the autocorrelation analysis. The
assessment of the results has been performed through a consistency
verification supported by the folded light-curve analysis. The data
analysis procedure has discarded a non-negligible fraction of light
curves due to instrumental artefacts; however, it has allowed us to
identify pulsators and binaries among a large number of field stars.
We measure a wide range of periods, from 0.25 to 100d, most of which
are rotation periods.
The final catalogue includes 1978 periods, with 1727 of them
identified as rotational periods, 169 as pulsations and 82 as orbital
periods of binary systems.
Description:
We initially selected from the CoRoT data base (Archive of the CoRoT
Data Center at Space Astrophysics Institute, Orsay, France,
http://idoc-corot.ias.u-psud.fr/) observations of dwarf stars
(labelled as luminosity class V) with colour index B-V between 0.44
and 1.4 performed during the LRa01 and LRc01 runs of the exoplanet
field (the luminosity class and colour information are from both the
EXODAT/COROTSKY data base and the archive of the CoRoT Data Center).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 82 1978 Catalogue of periods for CoRoT MS stars towards
the Galactic Centre and anticentre
plots/* . 1978 Individual light curves images
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See also:
B/corot : CoRoT observation log Release 12 (CoRoT, 2009-2013)
V/133 : Kepler Input Catalog (Kepler Mission Team, 2009)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 10 I10 --- CoRoT CoRoT identification number
12- 27 A16 --- 2MASS 2MASS name (HHMMSSss+DDMMSSs)
29- 37 F9.5 deg RAdeg Right ascension in decimal degrees (J2000)
39- 46 F8.5 deg DEdeg Declination in decimal degrees (J2000)
48- 54 F7.3 d Per Period
56- 58 A3 --- Meth [12- ] Method used: 1=periodogram analysis,
2=autocorrelation
62 A1 --- LC [PRE] Type of lightcurve: P=pulsation,
R=rotation, E=eclipsing binary
64- 77 A14 --- FileName Name of the file with the light curves,
in subdirectory plots
79- 82 F4.1 --- Prot ? Rotational periods of eclipsing binaries
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History:
* 21-Jun-2013: From electronic version of the journal
* 14-Jan-2014: 2MASS names corrected.
(End) Patricia Vannier [CDS] 06-Apr-2013