A common colour-magnitude relation from giant elliptical galaxies to globular clusters?
arXiv:0907.3305
Abstract
We discuss the existence of a common colour-magnitude relation (CMR) of metal-poor globular clusters and early-type galaxies, i.e. giant ellipticals, normal ellipticals and lenticulars, dwarf ellipticals and lenticulars, and dwarf spheroidals. Such CMR would cover a range of ~ 14 mag, extending from the brightest galaxies, down to the globular clusters on the fainter side.
4 pages, 1 figure, refereed article, to appear in 51 Boletin de la Asociacion Argentina de Astronomia