Title:Near-Infrared spectroscopic survey of candidate massive stars in the perifery of the starburst Galactic 
star cluster NGC3603

Abstract:
NGC 3603 is one of the most massive and dense star-forming regions known in the Galaxy, being the 
closest exemplar of a star-burst like cluster (very similar to the star-burst cluster R136 in the Large 
Magellanic Cloud), with dozens of massive stars in its core, some of them probably presenting initial 
masses exceeding ~  100-150 Msun. In this contribution I will show the results of a ongoing project aimed to 
detect a massive stellar population in the halo of NGC 3603.