Massive Stars in the Arches Cluster

  title={Massive Stars in the Arches Cluster},
  author={Donald F. Figer and Francisco Najarro and Diane Gilmore and Mark R. Morris and Sungsoo S. Kim and Eugene Serabyn and Ian S. McLean and Andrea M. Gilbert and James R. Graham and James E. Larkin and N. A. Levenson and Harry I. Teplitz STScI and Jhu and Instituto de Estructura de la Materia and Ucla and Caltech Ucb Gsfc},
  journal={The Astrophysical Journal},
We present and use new spectra and narrowband images, along with previously published broadband images, of stars in the Arches cluster to extract photometry, astrometry, equivalent width, and velocity information. The data are interpreted with a wind/atmosphere code to determine stellar temperatures, luminosities, mass-loss rates, and abundances. We have doubled the number of known emission-line stars, and we have also made the first spectroscopic identification of the main sequence for any… 
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