On The Origin of the Blue Tilt in Extragalactic Globular Cluster Systems

Abstract

Some early-type galaxies show a correlation between color and integrated magnitude among the brighter metal-poor globular clusters (GCs). This phenomenon, known as the blue tilt, implies a mass-metallicity relationship among these clusters. In this paper we show that self-enrichment in GCs can explain several aspects of the blue tilt, and discuss predictions of this scenario.

arXiv comment25 pages, accepted to AJ

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