B,V photometry of the RR Lyrae stars in the very metal-poor globular cluster NGC 5053

Details B,V photometry of the RR Lyrae stars in the very metal-poor globular cluster NGC 5053 B,V photometry of the RR Lyrae stars in the very metal-poor globular cluster NGC 5053

Feb 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995aj....109..618n&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 109, no. 2, p. 618-638

Astronomy and Astrophysics

Astronomy

8

Astronomical Photometry, Globular Clusters, Metallicity, Variable Stars, Charge Coupled Devices, Color-Magnitude Diagram, Stellar Color, Stellar Magnitude, Stellar Oscillations

Scientific paper

The RR Lyrae stars in NGC 5053 are investigated using B,V photometry derived from CCD frames taken on 15 nights between 1985 and 1994. Estimates of fundamental photometric parameters are presented for the ten stars, including mean B and V magnitudes,pulsation periods, pulsation amplitudes, mean value of B - mean value of V colors, and period change rates. Until now the mean B,V magnitudes were unknown because the previous photographic photometry (Baade (1928), Sawyer (1946), Rosino (1949), and Mannino (1963)) is not on the Johnson system and is not readily transformed to that system.

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