Release 11.12 ("Hergest Ridge")


Gclusters :: Bibliographic item "gc540"

Article ID: gc540
AuthorClement, Christine M.; Shelton, Ian
TitleThe Structure of the Light Curves of the RR Lyrae Variables in the Oosterhoff Type I Cluster NGC 6171
JournalAstronomical Journal v.113, p. 1711-1722
Year of publication1997 (on gclusters from 2017-10-02 12:21:06 )
AbstractCCD observations have been used to derive precise light curves and Fourier parameters for sixteen RR Lyrae variables in the Oosterhoff type I globular cluster NGC 6171. (...) A comparison with the parameters determined from CCD observations of RRc stars in six other galactic globular clusters indicates that mean masses and mean luminosities increase and mean temperatures and helium abundances decrease with decreasing cluster metal abundance. The formulae of Jurcsik & Kovacs for relating Fourier parameters of RRab stars to [Fe/H] and luminosity have been tested and the results are reasonable.
TagsNGC 6171

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