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\IBVShead{4396}{20 November 1996}

\title{PHOTOELECTRIC $BVR_c$ OBSERVATIONS}
\vspace{-0.4in}
\title{OF THE NEW CEPHEID VARIABLE STAR GSC\,4019.3103}

\begintext

Recently Antipin (1996) has analysed photographic archival plates
at Sternberg Astronomical Institute of Moscow and found that
the star GSC\,4019.3103 is a Cepheid variable with the elements:
\vskip 1mm
\centerline{Max JD$_{hel}$ = 2441188.53 + 5.35047 $\times$ E}
\vskip 1mm

We observed this Cepheid photoelectrically at Mt. Maidanak
observatory  in August 1996 using
the 60-cm reflector; a total of 32 $BVR_c$
measurements were obtained (Table 1), the accuracy
of the individual data is near $\pm$ 0\fm 01 in  $V$ and
near $\pm$0\fm 02 in $B-V$ and $V-R_{\rm c}$.
Above elements are used in Figure 1 for plotting our
observations. According to our data, the amplitude of the light
curve is  0\fm 39  in $V$, 0\fm 22  in $B-V$ and 0\fm 15
in $V-R_c$.

\bigskip
The research described here was made possible in part by grants
No. 95--02--05276 and No. 94--02--04347 from the Russian
Foundation of Basic Research.

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\begin{center}
Table 1
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\begin{tabular}{cccccccc}
\hline
$JD_{hel}$&$V$&$B-V$&$V-R_c$&$JD_{hel}$&$V$&$B-V$&$V-R_c$\\
2450300+ & & & &2450300+ & & & \\
\hline
\\
12.2110&11.164&   -  &   -  &  18.3726&11.299& 1.362&  0.885\\
12.3549&11.229& 1.339&  0.867&  19.2074&11.358& 1.382&  0.884\\
13.2549&11.327& 1.353&  0.874&  19.3359&11.362& 1.445&  0.877\\
13.3113&11.304& 1.399&  0.858&  19.3829&11.344& 1.442&   -  \\
14.2079&11.354& 1.384&  0.867&  20.3137&11.343& 1.345&  0.876\\
14.2986&11.355& 1.392&  0.896&  20.4143&11.289& 1.338&  0.867\\
14.4123&11.359& 1.399&  0.880&  21.1878&11.057& 1.192&  0.787\\
15.2647&11.237& 1.330&   -  &  21.3745&11.033& 1.278&  0.828\\
15.3469&11.191& 1.351&  0.867&  22.1977&11.069& 1.251&  0.790\\
15.3734&11.163& 1.356&  0.844&  22.3651&11.131& 1.307&  0.835\\
16.1767&11.033& 1.187&  0.770&  23.2156&11.224& 1.362&  0.846\\
17.2715&11.153& 1.313&  0.830&  23.4506&11.251& 1.365&  0.879\\
17.3538&11.130& 1.360&  0.814&  24.2137&11.342& 1.390&  0.856\\
17.4264&11.164& 1.328&  0.854&  24.4007&11.344& 1.403&  0.887\\
18.2107&11.275& 1.385&  0.839&  25.1884&11.346& 1.411&  0.829\\
18.3055&11.285& 1.362&  0.854&  25.3371&11.361& 1.376&  0.883\\
\hline
\end{tabular}
\end{center}
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\centerline{2}
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\centerline{\epsffile{4396-f1.ps}}
\centerline{Figure 1.  The light curve}

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\beginauthors
\authorsrightcol
 L.~N.~BERDNIKOV
 O.~V.~VOZYAKOVA
 Sternberg Astronomical Institute
 13, Universitetskij prosp.
 Moscow 119899, Russia
\vskip 2mm
 V.~V.~IGNATOVA
 Astronomical Institute
 33, Astronomicheskaya ul.
 Tashkent 520000, Uzbekistan
\endauthors
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%\references
Reference:

Antipin, S.V., 1996, Peremennye Zvezdy (in press)


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