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Discovery of an extraordinarily massive cluster of red supergiants
(University of Chicago Press: Astrophysical Journal, 2006-06-01)
We report the discovery of an extraordinarily massive young cluster of stars in the Galaxy, having an inferred total initial cluster mass comparable to the most massive young clusters in the Galaxy. Using IRMOS, 2MASS, and ...
The double-lined spectrum of LBV 1806-20
(University of Chicago Press: Astrophysical Journal Letters, 2004-08-01)
Despite much theoretical and observational progress, there is no known firm upper limit to the masses of stars. Our understanding of the interplay between the immense radiation pressure produced by massive stars in formation ...
Massive stars in the Arches cluster
(University of Chicago Press: Astrophysical Journal, 2002-12-10)
We present and use new spectra and narrow-band images, along with previously published broad-band images, of stars in the Arches cluster to extract photometry, astrometry, equivalent width, and velocity information. The ...