RR Lyrae Variables in Globular Clusters and Nearby Galaxies
Abstract
I point out that the Oosterhoff dichotomy for globular cluster and field RR Lyrae (RRL) stars may place the strongest constraints so far on the number of dwarf spheroidal-like protogalactic fragments that may have contributed to the formation of the Galactic halo. The first calibration of the RRL period-luminosity relation in I, J, H, K taking evolutionary effects into account is provided. Problems in the interpretation of RRL light curves and evolutionary properties are briefly reviewed.
Keywords
Cite
@article{arxiv.astro-ph/0310159,
title = {RR Lyrae Variables in Globular Clusters and Nearby Galaxies},
author = {M. Catelan},
journal= {arXiv preprint arXiv:astro-ph/0310159},
year = {2007}
}
Comments
Invited review, IAU Colloq. 193, "Variable Stars in the Local Group", ed. D. W. Kurtz & K. R. Pollard. ASP Conf. Ser., in press (11 pages, 3 figures). Replaced to match paper as it will appear in the conference proceedings volume. Includes Q&A section and a correction to Table 2