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 Science, Aug 2006, in press
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%astro-ph/0608427

\documentstyle[12pt,preprint]

\title{Pinwheels in the Quintuplet Cluster}
\author{Peter Tuthill, John Monnier, Angelle Tanner, Donald Figer,
Andrea Ghez, William Danchi}


\begin{abstract}

The five enigmatic "Cocoon stars" after which the Quintuplet cluster was
christened have puzzled astronomers since their discovery. Their 
extraordinary
cool, featureless thermal spectra have been attributed to various 
stellar types
from young to highly evolved, while their absolute luminosities places them
among the supergiants. We present diffraction-limited images from the 
Keck 1
telescope which resolves this debate with the discovery of rotating spiral
plumes characteristic of colliding-wind binary "pinwheel" nebulae.
Such elegant spiral structures, found around high-luminosity Wolf-Rayet 
stars,
have recently been implicated in the behavior of supernovae lightcurves 
in the
radio and optical.

\end{abstract}
\end{document}