Annu. Rev. Astron. Astrophys. 1989. 27: 139-59 Copyright © 1989 by Annual Reviews. All rights reserved

5.16 Draco

Draco is probably the most thoroughly studied, as well as the most uninteresting, of the Local Group dwarf galaxies. It was the first for which a CMD was obtained [by Baade & Swope (15), who also studied, its RR Lyrae variables]. Spectrophotometry by Zinn (134) showed that its abundances were very low, a result that confirmed earlier photometry (8, 22, 27, 56). Aaronson et al. (3) found three carbon stars, and Azzopardi et al. (10) found a fourth candidate. Like Ursa Minor, there seems to be a range of metals abundance in Draco but no evidence that there was an extended period of latter-day star formation.