THE AGE AND METALLICITY OF THE BOÖTES I SYSTEM
THE AGE AND METALLICITY OF THE BOÖTES I SYSTEM
We present Washington CT1T2 photometry of a field central to the Boötes I dwarf spheroidal galaxy, which was discovered as a stellar overdensity in the Sloan Digital Sky Survey (DR5). We show that the Washington filters are much more effective than the Sloan filters in separating the metal-poor turn-off stars …