# The R136 star cluster dissected with Hubble Space Telescope/STIS. I. Far-ultraviolet spectroscopic census and the origin of He II λ1640 in young star clusters

@article{Crowther2016TheRS,
title={The R136 star cluster dissected with Hubble Space Telescope/STIS. I. Far-ultraviolet spectroscopic census and the origin of He II $\lambda$1640 in young star clusters},
author={Paul A. Crowther and Saida M. Caballero-Nieves and K. Azalee Bostroem and Jes{\'u}s Ma{\'i}z Apell{\'a}niz and Fabian R. N. Schneider and Nolan R. Walborn and C R Angus and Ines Brott and Aristides M. Bonanos and Alex de Koter and Selma E. de Mink and C. J. Evans and Gotz Grafener and Artemio Herrero and Ian D. Howarth and Norbert Langer and Daniel J. Lennon and Joachim Puls and Hugues Sana and Jorick S. Vink},
journal={Monthly Notices of the Royal Astronomical Society},
year={2016},
volume={458},
pages={624-659}
}
• P. Crowther, +17 authors J. Vink
• Published 16 March 2016
• Physics
• Monthly Notices of the Royal Astronomical Society
We introduce a Hubble Space Telescope (HST)/Space Telescope Imaging Spectrograph (STIS) stellar census of R136a, the central ionizing star cluster of 30 Doradus. We present low resolution far-ultraviolet STIS spectroscopy of R136 using 17 contiguous 52 arcsec x 0.2 arcsec slits which together provide complete coverage of the central 0.85 parsec (3.4 arcsec). We provide spectral types of 90 per cent of the 57 sources brighter than m(F555W) = 16.0 mag within a radius of 0.5 parsec of R136a1, plus…
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