------------------------------------------------------------------------
From: Molly Peeples  molly@astronomy.ohio-state.edu 
To: gcnews@aoc.nrao.edu
Subject: submit paper.tex Acta Astron., 57 (2007) 73

% astro-ph/0703769

\title{A Study of Stellar Photometric Variability Within the Central 4 pc 
of
the Galactic Center with Infrared Image Subtraction}

\author{Molly S. Peeples, K. Z. Stanek, D. L. DePoy}
\affil{Ohio State University}
\begin{abstract}
We present a catalog of 110 variable stars within ~1' of Sgr A* based
on image subtraction of near-infrared (H and K) photometry. Our images
were obtained over 133 nights from 2000--2002 in H-band and over 134
nights from 2001--2002 in K-band; the typical FWHM is 1.4''. We match
the catalog to other near-infrared, X-ray, and radio (i.e., maser)
data, and we discuss some of the more interesting objects. The catalog
includes 14 periodic sources, several known long-period variables and
three new LPV candidates. We associate IRS 10* with OH, SiO, and H2O
masers and a bright X-ray point source; this analysis suggests IRS 10*
is an AGB star with an accreting companion. Among the approximately 90
newly discovered sources are a probable cataclysmic variable, a
potential edge-on contact 84 day period eclipsing binary, and a
possible 41 day period pulsating variable.
\end{abstract}