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J/other/RMxAA/50.307 NGC 3201 RR Lyr stars light curves (Arellano Ferro+, 2014)
The following files can be converted to FITS (extension .fit or fit.gz)
table1.dat table5.dat
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Query from: http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=J/other/RMxAA/50.307
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Beginning of ReadMe :J/other/RMxAA/50.307 RR Lyr light curves in NGC 3201 (Arellano Ferro+, 2014)
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Fourier decomposition of RR Lyrae light curves and the SX Phe population in the
central region of NGC 3201.
Arellano Ferro A., Ahumada J.A., Calderon J.H., Kains N.
<Rev. Mex. Astron. Astrofis., 50, 307-322 (2014)>
=2014RMxAA..50..307A
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ADC_Keywords: Clusters, globular ; Stars, variable ; Photometry, CCD
Keywords: globular clusters: individual: NGC 3201 -
stars: variables: RR Lyrae
Abstract:
CCD time-series observations of the central region of the globular
cluster NGC 3201 were obtained with the aim of performing the Fourier
decomposition of the light curves of the RR Lyrae stars present in
that field. This procedure gave the mean values, for the metallicity,
of [Fe/H]_ZW_=-1.483+/-0.006 (statistical) +/-0.090 (systematical),
and for the distance, 5.000+/-0.001kpc (statistical) +/-0.220
(systematical). The values found from two RRc stars are consistent
with those derived previously. The differential reddening of the
cluster was investigated and individual reddenings for the RR Lyrae
stars were estimated from their V-I curves. We found an average value
of E(B-V)=0.23+/-0.02. An investigation of the light curves of stars
in the blue stragglers region led to the discovery of three new SX Phe
stars. The period-luminosity relation of the SX Phe stars was used for
an independent determination of the distance to the cluster and of the
individual reddenings. We found a distance of 5.0kpc
Description:
V and I time-series photometry for all confirmed variables in the
central region of the golbular cluster NGC 3201.