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\IBVShead{4125}{15 December 1994}                      % Use it with dummy or empty arguments

% Call for macro \title {Title of the paper}
\centerline{\ft TEN NEW VARIABLE STARS IN HERCULES AND CORONA BOREALIS}
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\begintext

Ten new variables were discovered using the positive-negative method
in a field 10\degr$\times$10\degr \ centered on $\eta$ Her
($\alpha$=16\fh 40\fmm, $\delta$=+39\fdg, 2000).

Our study was based on Moscow collection plates
taken with the 40 cm astrograph in Crimea.

Table 1 contains coordinates and GSC identifications of new variables
(for GSC stars, the coordinates are taken from GSC). Table 2
presents for each star: number of observations and
time interval covered (n and JD); maximum and minimum brightness
($B$ band); type of variability and light elements. Magnitudes of comparison
stars, presented in Table 3, were obtained using
a standard near M13 (Arp and Johnson, 1955) with improved
photometry from Forbes and Dawson (1986).
Finding charts and light curves of the periodic variables are presented
in Figures 1 and 2, respectively.

Sincere thanks are due to S.Yu. Shugarov for the software  used
for period determinations. This study was partially supported by the
Russian Foundation for Fundamental Research through grant No. 93-62-17108.

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\centerline{Table 1}
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\small
\begin{tabular}{lccc}
\hline 
\ \ \,Star&$\alpha_{(2000)}$&GSC\\
\hline
\\
Var 1&16\fh 49\fmm 44\fs 2&39\degr 38'57''& \\
Var 2&16 35 33.9&41 06 50& \\
Var 3&16 27 45.4&41 40 23&3066.0251\\
Var 4&16 25 16.3&40 53 49&3065.0704\\
Var 5&16 35 11.2&42 46 26& \\
Var 6&16 16 59.5&39 38 37&3062.0786\\
Var 7&16 19 14.1&39 39 98&3062.0052\\
Var 8&17 02 38.3&39 32 27& \\
Var 9&16 59 50.5&41 11 14&3075.0202\\
Var 10&16 59 36.7&41 57 25&3079.0534\\
\hline
\end{tabular}
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\large
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Remarks for individual stars
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\begin{list}{}{\itemsep=0pt}
\item[Var 4.] Period varies. The data from JD 2441750 to
45960 are used in Fig. 2 for Var~4. Seven latest observations (2447027--48778) are not represented
with the elements.
 l=64\fdg 79, b=+44\fdg 35, confirming
the suggested CWA classification.
\item[Var 7.] Blazhko effect.
\item[Var 9.] Red on Palomar charts. Fragments of the light curve are given in
Fig. 3. A brightness decrease during JD=2441782--41813 resembles an eclipse.
\item[Var 10.] A secondary minimum exists. D=0\fp 1.
Primary minima:
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\end{list}
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\small
\begin{tabular}{rccccccc}
 & & & & & & & \\
JD=2441565.28 &41947.33&42217.43&42686.28&43017.38&43934.54&45580.30&47027.32\\
     41570.28 &41952.36&42309.24&42869.47&43659.43&45524.36&45585.34&47679.44\\
     41840.42 &42212.43&42365.16&42920.50&43807.20&45529.39&45911.39& \\
\end{tabular}
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\large
 
            
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\centerline{2}
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\centerline{Figure 1}
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\centerline{Figure 2}
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\centerline{Table 2}
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\small
\begin{center}
\begin{tabular}{lccclll}
\hline 
\ \ \,Star&n&JD\,24...&Type&B$_{pg MAX}$&B$_{pg MIN}$&Light elements\\
\hline
\\
Var 1&240&41750$-$48778&RRab&15\fm 1&16\fm 8&JD$_{MAX}$=2447296.48$\pm$0\fd 704545$\times$E\\
Var 2&238&41750$-$48778&RRab&15.1&16.4&JD$_{MAX}$=2441837.42$\pm$0\fd 532464$\times$E\\
Var 3&239&41750$-$48778&RRab&15.2&16.9&JD$_{MAX}$=2442363.20$\pm$0\fd488907$\times$E\\
Var 4&254&41750$-$48778&CWA&14.3&15.5&JD$_{MAX}$=2445616.20$\pm$15\fd 501$\times$E\\
Var 5&244&41750$-$48778&RRab&14.5&16.6&JD$_{MAX}$=2443969.49$\pm$0\fd 502775$\times$E\\
Var 6&229&41750$-$48778&RRab&14.5&16.7&JD$_{MAX}$=2445588.35$\pm$0\fd578174$\times$E\\
Var 7&312&37080$-$48778&RRab&12.9&14.6&JD$_{MAX}$=2442633.43$\pm$0\fd480107$\times$E\\
Var 8&299&37087$-$48778&RRab&14.8&16.4&JD$_{MAX}$=2444849.30$\pm$0\fd 568397$\times$E\\
Var 9&322&37087$-$48778&?&12.1&14.2& \\
Var 10&315&37087$-$48778&EA&12.95&14.1&JD$_{MIN}$=2442217.42$\pm$5\fd 0952$\times$E\\
\hline
\end{tabular}
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\large
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%\hspace*{10cm}Table 3
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%\hbox to 15.9cm {
%\small
%\begin{tabular}{lccccccc}
%\hline
%\ \ \,Star&a&b&c&d&e&f&g\\
%\hline
%\\
%Var 1&14.75&15.37&16.42&16.94& & & \\
%Var 2&14.90&15.89&16.08&16.52& & & \\
%Var 3&14.88&15.26&15.83&16.13&16.78& & \\
%Var 4&14.00&14.62&14.77&15.50& & & \\
%Var 5&14.57&15.20&15.78&16.53& & & \\
%Var 6&14.20&14.82&15.28&16.40&17.50& & \\
%Var 7&12.43&12.05&13.87&14.22&14.68& & \\
%Var 8&14.26&15.23&15.89&16.48& & & \\
%Var 9&11.80&12.21&12.32&12.84&13.34&13.49&14.42\\
%Var 10&12.73&13.54&14.32& & & & \\
%\hline
%\end{tabular}}
%\large

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%\hspace*{1.5cm}Figure 2 (cont.)

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%\centerline{Figure 3}
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% Call for macros \authors - \authorsrightcol - \endauthors
\beginauthors
\authorsrightcol
S.\,V. ANTIPIN
Sternberg Astronomical Institute
13, Universitetskij Prosp.
Moscow 119899, Russia
\endauthors

% Call for macro \references
\references

Arp, H.C. and   Johnson, H.L., 1955, ApJ, {\bf 122}, 171

Forbes, D. and  Dawson, P.C., 1986, PASP, {\bf 98}, 102
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