Improved parameters of the RR Lyrae variable USNO-A2.0 1200-07442272

Details Improved parameters of the RR Lyrae variable USNO-A2.0 1200-07442272 Improved parameters of the RR Lyrae variable USNO-A2.0 1200-07442272

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009oejv..110....1l&link_type=abstract

Open European Journal on Variable Stars, vol. 110, p.1

Computer Science

Scientific paper

A refined period of 0.3488463(18) and Fourier decomposition components are provided for the RR Lyrae variable USNO-A2.0 1200-07442272, which lies in the field of TY Boo. The star is found to an RRc variable with a hump on the rising branch, and also has very low metallicity, [Fe/H] ZW = -1.5 and [Fe/H] CG = -1.2, typical of the halo population. It is an extreme halo object and probably lies at nearly 6 kpc from the galactic plane.

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