\documentstyle[twoside, ibvs2, ibvst, epsf]{article} 

\begin{document}

\IBVShead{5148}{26 July 2001}

\IBVStitle{GSC 5582.0545 is an Eclipsing Binary of W UM\lowercase{a} type}

\vskip-8pt
\centerline{(BAV MITTEILUNGEN NO. 137)}
\vskip18pt

\IBVSauth{Frank, P.$^{1,3}$; Bernhard, K.$^{2,3}$}

\IBVSinst{D--84149 Velden, Germany, e-mail: frank.velden@t-online.de}

\IBVSinst{A--4030 Linz, Austria, e-mail: kl.bernhard@aon.at}

\IBVSinst{Bundesdeutsche Arbeitsge\-mein\-schaft f\"{u}r Ver\"{a}nderliche
Sterne e.V. (BAV), Munsterdamm 90,\\ \indent D--12169~Berlin, Germany}

\SIMBADobj{GSC 5582-0545}

\begintext

\IBVSTnam{GSC 5582.0545}

\IBVSTcoo{14\hr51\mm17\fsec1}{$-11\deg09\arcm43\arcs$}{2000}

\IBVSTobs{P. Frank: Private observatory, 30-cm flat-field camera;\\
K. Bernhard: Private observatory, 20-cm Schmidt--Cassegrain telescope}

\IBVSTdet{P. Frank: OES-LcCCD11 camera;\\
& K. Bernhard: Starlight Xpress SX camera}

\IBVSTfil{None}

\IBVSTcomp{GSC 5582.0574, $V\approx11\fmm6$}

\IBVSTchk{GSC 5586.0018}

\IBVSTsysn

\IBVSTdata{Upon request}

\IBVSTtyp{ W UMa }

\IBVSTrem{
In 1998 the variability of GSC 5582.0545 has been found as part of a
program to discover and classify new variables using CCD observations
of selected fields on the edge of the northern Milky Way (eg.\ Bernhard
\& Lloyd 2000). Additional observations were performed on 7 nights
between April and May 2000 (P. Frank). This star has previously been
referred to as Brh V3 (Bernhard 1998, Moschner 2001).\\
The following times of minima were observed:
\begin{center}
\begin{tabular}{ll}
\hline
Type & JD Hel.\\
\hline
Min II & 2451678.383\\
Min I & 2451679.424\\
Min II & 2451680.467\\
\hline
\end{tabular}
\end{center}
The ephemeris was calculated using the ``Phase Dispersion
Minimization'' method:
\belowdisplayskip-12pt
\begin{equation}
\begin{array}{r@{}r@{}l}
{\rm MinI = HJD~}2451679.424 & {} + 0\fday69552 & {} \times E. \\ 
 \pm 2 & \pm 3 \\ 
\end{array}
\end{equation}}

\IBVSTack{This research made use of the SIMBAD data base, operated by
the CDS at Strasbourg, France. The authors thank Dr.\ P. Kroll for
helpful comments.}

\IBVSfig{8cm}{5148-f1.ps}{Differential light curve of GSC 5582.0545; filled squares: K. Bernhard, open circles: P. Frank}

\references

Bernhard, K., 1998, {\it vsnet-obs}, No.\ 15317,\\ 
http://www.kusastro.kyoto-u.ac.jp/vsnet/Mail/obs15000/msg00317.html 

Bernhard, K., Lloyd. C., 2000, {\it IBVS}, No.\ 4920

Moschner, W., 2001, http://www.var-mo.de/bev.sterne.htm

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