VI photometry of new M53 variables (Dekany+, 2009)

Details VI photometry of new M53 variables (Dekany+, 2009) VI photometry of new M53 variables (Dekany+, 2009)

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009ycat..35070803d&link_type=abstract

VizieR On-line Data Catalog: J/A+A/507/803. Originally published in: 2009A&A...507..803D

Computer Science

Clusters: Globular, Stars: Variable, Photometry: Vri

Scientific paper

Johnson V and Kron-Cousins I photometric time series of the variables detected in our work and the Fourier decompositions of cluster RR Lyrae stars with magnitude-transformed light curves in V band are presented.
The file 'rrlvcoe.dat' contains the Fourier decompositions of the TFA-filtered standard V light curves of 11 fundamental-mode and 13 first overtone mode RR Lyrae stars for which flux-to-magnitude transformation was performed. Fourier parameters refer to a sine decomposition defined by the following expression:
V(t) = A0 + A1*sin[2*{pi]*(t-t0)*1*f0+φ1] + A2*sin[2*{pi]*(t-t0)*2*f0+φ2] + ...
ID type period epoch A0 N sigma A M A1 phi1 ... AM phiM
Here 'ID' is the identification number of a star according to the Catalog of Variable Stars in Globular Clusters (CVSGC, Clement et al. 2001AJ....122.2587C); 'type' has a value of 'RR0' or 'RR1' for fundamental and first overtone pulsators, respectively; 'N' is the number of the data points used in the calculation of the Fourier decomposition; 'sigma' is the standard deviation of the residuals of the fit; 'A' is the total amplitude of the light variation calculated from the fitted Fourier sum; and 'M' is the order of the Fourier fit. For RR0 stars, M=10, while M=3 for RR1 stars. In the case of RR1 stars table cells corresponding to Fourier terms higher than 3 are filled with zero values.
Photometric time series of the M53 variable stars are given in the following files:
'vXX.YZ.ext'
where 'XX' is a two-digit integer number corresponding to the variable's name in the CVSGC (e.g., for variable V6, 'XX'='06'); the value of 'Y' is 'v' or 'i', for V or I band data, respectively; the value of 'Z' is 'r' or 'f', for raw (i.e., non-TFA) or TFA-filtered data, respectively; and the value of 'ext' is either 'flx' or 'mag', for data in differential flux units or standard magnitude units, respectively. Note that TFA post-processing was done for the V data only.
(5 data files).

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