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2008MNRAS.384.1444A - Mon. Not. R. Astron. Soc., 384, 1444-1458 (2008/March-2)
CCD photometry of the globular cluster NGC 5466. RR Lyrae light-curve decomposition and the distance scale.
ARELLANO FERRO A., ROJAS LOPEZ V., GIRIDHAR S. and BRAMICH D.M.
Abstract (from CDS):
The MV-[Fe/H] relation has been recalibrated as MV= +(0.18±0.03)[Fe/H] + (0.85±0.05) using the mean values derived by the Fourier technique on RR Lyrae stars in a family of clusters. This equation predicts MV= 0.58 mag for [Fe/H] = -1.5, in agreement with the average absolute magnitude of RR Lyrae stars calculated from several independent methods. The MV-[Fe/H] relationship and the value of [Fe/H] have implications on the age of the globular clusters when determined from the magnitude difference between the horizontal branch and the turn-off point (HB-TO method). The above results however would not imply a change in the age of NGC 5466, of 12.5±0.9 Gyr, estimated from recent isochrone fitting.
Abstract Copyright: 2008 The Authors. Journal compilation © 2008 RAS
Journal keyword(s): binaries: eclipsing - stars: distances - stars: horizontal branch - stars: variables: other - globular clusters: individual: NGC 5466
VizieR on-line data: <Available at CDS (J/MNRAS/384/1444): stars.dat table3.dat table4.dat table5.dat table6.dat>
Nomenclature: Table 7: Cl* NGC 5466 SAW VNN (Nos V37-V38) added, Cl* NGC 5466 FLG N (Nos 1-3).
Simbad objects: 46
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