RR Lyrae variables in Baade's Window

A blink survey for Galactic-bulge RR Lyraes in Baade's Window has been carried out in a 777-sq-arcmin area that includes part of the area surveyed by Baade (1946, 1951, and 1963). Data are presented for 77 RR Lyraes, including 58 that had been previously detected by Baade, and for a few eclipsi...

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Veröffentlicht in:The Astronomical journal 1984-12, Vol.89, p.1836-1867
1. Verfasser: Blanco, B. M.
Format: Artikel
Sprache:eng
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Zusammenfassung:A blink survey for Galactic-bulge RR Lyraes in Baade's Window has been carried out in a 777-sq-arcmin area that includes part of the area surveyed by Baade (1946, 1951, and 1963). Data are presented for 77 RR Lyraes, including 58 that had been previously detected by Baade, and for a few eclipsing or other short-period variables. Light curves and identification charts for all of these stars are given. The period-frequency and period-amplitude relationships, as well as estimated Delta S values, suggest that although the Galactic-bulge RR Lyraes show an appreciable range in metallicity, the majority are relatively metal rich as compared to the globular cluster M3.
ISSN:0004-6256
DOI:10.1086/113696