From mww@ipac.caltech.edu Wed Jun  5 12:36:08 1996
From: mww@ipac.caltech.edu
Date: Wed, 5 Jun 1996 09:28:47 -0700
To: hfalcke@astro.umd.edu
Subject: abstract
X-Sun-Charset: US-ASCII
Content-Length: 1633


\title{DETECTION OF STELLAR VARIABILITY IN THE 
CENTRAL PARSEC OF THE GALAXY}

\author{M. Tamura, M.W.Werner, E.E.Becklin, and E.S.Phinney}


\begin{abstract}
We have searched for time variability of the stars in the central 
parsec of the Galaxy through K-band (2.2um) imaging and 
photometry. The observations were made with an array-based 
camera at the NASA Infrared Telescope Facility in 1991, 1992, 
and 1993.  In 1991, on timescales ranging from 20 seconds to a 
week, no time variability greater than 0.1 mag was found for about 
five dozen sources in this region, and the brighter sources were 
stable to ~0.05 mag.  On timescales of one to two years, we found 
a new source near IRS10E that varied in brightness by at least one 
magnitude and detected variability of 0.15 to 0.5 mag in several 
other sources, most notably the red giants IRS9 and IRS12N.  
None of the luminous blue stars identified in the Galactic center 
region show evidence for variability.
\end{abstract}


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