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\begin{document}

\IBVShead{4141}{11 January 1995}

\centerline{\ft BVR OBSERVATIONS OF THE DOUBLE-MODE CEPHEIDS}
\centerline{\ft AS Cas, V367 Sct and BQ Ser}
\vskip 8mm
\begintext

Recently one of  us  (Berdnikov,  1992)  has  decomposed the
available photoelectric  observations of all double-mode Cepheids
into two oscillations.  It was pointed out as well that the  number  of
existing   observations   is   not   sufficient  for  reliable
investigation of light curve variations for the majority of  these
stars. Therefore we continue to carry out observations of
all accessible double-mode Cepheids.

Photoelectric observations  of  double-mode  Cepheids
were carried out in summer -- autumn 1994.  The 60-cm  reflector  of
the   Mt.  Maidanak observatory was used  and 87 BVR$_c$ measurements
of AS Cas (Table 1),
83 BVR$_c$ measurements of V367 Sct (Table 2), and
85 BVR$_c$ measurements of BQ Ser (Table 3) were obtained.

This study was partially supported by the Russian Foundation
for  Fundamental  Research  through  grants No. 94-02-04344 and No.
94-02-04347.

\begin{center}

Table 1. BVR$_c$ observations of AS Cas.

\vskip 1mm
\normalsize
\begin{tabular}{cccccccc}
\hline
JD hel & V & B$-$V & V$-$R$_c$ & JD hel & V & B$-$V & V$-$R$_c$ \\
2440000+ & & & & 2440000+ & & & \\
\hline
\\
9617.3164 & 12.322 & 1.255 & .863 & 9623.4090 & 12.112 & 1.314 &  .815 \\
9617.3504 & 12.259 & 1.386 & .852 & 9623.4310 & 12.123 & 1.298 &  .814 \\
9618.3861 & 12.354 & 1.298 & .883 & 9623.4534 & 12.151 & 1.329 &  .834 \\
9620.3324 & 11.918 & 1.205 & .737 & 9623.4716 & 12.191 & 1.324 &  .850 \\
9620.3539 & 11.908 & 1.132 & .736 & 9623.4832 & 12.170 & 1.336 &  .831 \\
9620.3766 & 11.887 & 1.165 & .754 & 9624.1588 & 12.503 & 1.538 &  .877 \\
9620.4128 & 11.819 & 1.211 & .721 & 9624.2814 & 12.569 & 1.490 &  .908 \\
9620.4432 & 11.895 & 1.152 & .764 & 9624.3650 & 12.584 & 1.506 &  .921 \\
9621.1692 & 12.280 & 1.343 & .857 & 9624.3841 & 12.565 & 1.518 &  .908 \\
9621.3032 & 12.390 & 1.383 & .874 & 9624.4003 & 12.515 & 1.523 &  .893 \\
9621.3502 & 12.435 & 1.434 & .862 & 9624.4195 & 12.542 & 1.530 &  .888 \\
9621.3744 & 12.441 & 1.420 & .874 & 9624.4383 & 12.528 & 1.505 &  .913 \\
9621.4077 & 12.454 & 1.472 & .876 & 9624.4607 & 12.505 & 1.484 &  .889 \\
9621.4436 & 12.455 & 1.417 & .863 & 9625.1723 & 12.529 & 1.504 &  .875 \\
9622.3680 & 12.693 & 1.498 & .906 & 9625.2322 & 12.521 & 1.468 &  .885 \\
9622.4203 & 12.637 & 1.444 & .901 & 9625.3175 & 12.533 & 1.463 &  .871 \\
9623.3008 & 12.048 & 1.256 & .799 & 9625.3804 & 12.498 & 1.406 &  .886 \\
9623.3332 & 12.169 & 1.289 & .790 & 9625.3995 & 12.492 & 1.451 &  .888 \\
9623.3576 & 12.137 & 1.325 & .801 & 9625.4333 & 12.460 & 1.453 &  .882 \\
9623.3780 & 12.132 & 1.310 & .816 & 9625.4523 & 12.441 & 1.461 &  .892 \\
\hline
\end{tabular}
\large
\vfill \eject

\centerline{2}
\vskip 1mm
\centerline{Table 1 (cont.)}
\vskip 1mm
\normalsize
\begin{tabular}{cccccccc}
\hline
JD hel & V & B$-$V & V$-$R$_c$ & JD hel & V & B$-$V & V$-$R$_c$ \\
2440000+ & & & & 2440000+ & & & \\
\hline
\\
9626.2049 & 12.403 & 1.348 & .877 & 9633.4340 & 12.333 & 1.337 &  .862 \\
9631.1784 & 12.654 & 1.550 & .884 & 9633.4456 & 12.324 & 1.362 &  .868 \\
9631.3015 & 12.686 & 1.508 & .931 & 9633.4655 & 12.308 & 1.419 &  .853 \\
9632.1944 & 12.210 & 1.336 & .831 & 9634.2147 & 12.439 & 1.474 &  .850 \\
9632.2367 & 12.218 & 1.327 & .825 & 9634.3259 & 12.408 & 1.483 &  .876 \\
9632.2991 & 12.293 & 1.321 & .825 & 9635.3464 & 11.917 & 1.198 &  .764 \\
9632.3259 & 12.208 & 1.379 & .823 & 9635.3636 & 11.916 & 1.183 &  .776 \\
9632.3449 & 12.159 & 1.286 & .824 & 9635.3751 & 11.891 & 1.211 &  .756 \\
9632.3457 & 12.182 & 1.395 & .807 & 9635.3899 & 11.911 & 1.182 &  .795 \\
9632.3758 & 12.250 & 1.407 & .826 & 9635.4033 & 11.870 & 1.193 &  .718 \\
9632.3922 & 12.285 & 1.345 & .865 & 9635.4134 & 11.818 & 1.198 &  .721 \\
9632.3940 & 12.116 & 1.293 & .813 & 9635.4379 & 11.851 & 1.199 &  .759 \\
9632.4123 & 12.244 & 1.406 & .830 & 9635.4521 & 11.837 & 1.236 &  .747 \\
9632.4317 & 12.288 & 1.374 & .869 & 9635.4655 & 11.833 & 1.241 &  .743 \\
9632.4552 & 12.280 & 1.399 & .849 & 9635.4751 & 11.847 & 1.203 &  .776 \\
9632.4740 & 12.238 & 1.334 & .843 & 9635.4833 & 11.830 & 1.191 &  .752 \\
9633.2048 & 12.309 & 1.395 & .840 & 9635.4998 & 11.824 & 1.193 &  .744 \\
9633.2313 & 12.401 & 1.346 & .828 & 9640.2452 & 12.335 & 1.401 &  .876 \\
9633.3173 & 12.427 & 1.383 & .867 & 9640.3355 & 12.357 & 1.387 &  .866 \\
9633.3380 & 12.391 & 1.356 & .859 & 9640.4015 & 12.321 & 1.378 &  .857 \\
9633.3590 & 12.339 & 1.345 & .872 & 9641.3499 & 12.202 & 1.274 &  .821 \\
9633.3734 & 12.311 & 1.400 & .815 & 9647.3170 & 12.096 & 1.285 &  .806 \\
9633.3949 & 12.342 & 1.369 & .871 & 9647.4003 & 12.080 & 1.284 &  .786 \\
9633.4108 & 12.312 & 1.400 & .871 &           &        &       &       \\
\hline
\end{tabular}
\large
\bigskip

Table 2. BVR$_c$ observations of V367 Sct.

\vskip 1mm
\normalsize
\begin{tabular}{cccccccc}
\hline
JD hel & V & B$-$V & V$-$R$_c$ & JD hel & V & B$-$V & V$-$R$_c$ \\
2440000+ & & & & 2440000+ & & & \\
\hline
\\
 9514.3396& 11.440& 1.755& 1.139&  9534.3365& 11.732& 1.952& 1.230 \\
 9514.4089& 11.467& 1.757& 1.175&  9535.2592& 11.895& 1.961& 1.256 \\
 9515.3672& 11.525& 1.774& 1.189&  9535.3229& 11.913& 1.990& 1.263 \\
 9516.3873& 11.786& 1.913& 1.247&  9535.3923& 11.902& 1.970& 1.263 \\
 9517.3863& 11.928& 1.956& 1.261&  9536.2505& 11.804& 1.878& 1.243 \\
 9519.4093& 11.304& 1.674& 1.132&  9536.3729& 11.792& 1.880& 1.238 \\
 9521.3388& 11.697& 1.910& 1.230&  9537.2542& 11.516& 1.796& 1.161 \\
 9522.3603& 11.843& 1.916& 1.244&  9537.3209& 11.531& 1.765& 1.185 \\
 9522.4212& 11.841& 1.938& 1.243&  9537.3932& 11.520& 1.771& 1.173 \\
 9523.3170& 11.812& 1.882& 1.245&  9538.2774& 11.493& 1.783& 1.173 \\
 9523.3971& 11.730& 1.921& 1.199&  9538.3272& 11.485& 1.824& 1.159 \\
 9524.2973& 11.618& 1.821& 1.186&  9539.2520& 11.611& 1.830& 1.200 \\
 9524.3667& 11.632& 1.796& 1.203&  9539.3396& 11.604& 1.861& 1.188 \\
 9524.4299& 11.601& 1.861& 1.180&  9542.3691& 11.777& 1.947& 1.242 \\
 9525.2927& 11.574& 1.778& 1.210&  9543.2439& 11.803& 1.918& 1.232 \\
 9534.2910& 11.732& 1.917& 1.238&  9543.3125& 11.789& 1.926& 1.230 \\
 9534.3296& 11.743& 1.947& 1.222&  9545.2329& 11.339& 1.701& 1.124 \\
\hline
\end{tabular}
\large
\vfill \eject

\centerline{3}
\vskip 1mm
Table 2 (cont.)
\vskip 1mm
\normalsize
\begin{tabular}{cccccccc}
\hline
JD hel & V & B$-$V & V$-$R$_c$ & JD hel & V & B$-$V & V$-$R$_c$ \\
2440000+ & & & & 2440000+ & & & \\
\hline
\\
 9545.2881& 11.365& 1.685& 1.144&  9557.2403& 11.576& 1.812& 1.208 \\
 9546.2361& 11.505& 1.786& 1.180&  9559.2140& 11.502& 1.825& 1.190 \\
 9946.3026& 11.508& 1.801& 1.172&  9559.2894& 11.512& 1.854& 1.187 \\
 9546.3769& 11.535& 1.811& 1.188&  9560.2235& 11.776& 1.940& 1.237 \\
 9547.2263& 11.752& 1.926& 1.238&  9560.3277& 11.775& 1.977& 1.244 \\
 9547.2830& 11.773& 1.932& 1.248&  9561.3035& 11.924& 2.013& 1.248 \\
 9548.3120& 11.915& 1.969& 1.259&  9563.3070& 11.322& 1.684& 1.123 \\
 9548.3508& 11.934& 1.971& 1.265&  9564.2313& 11.478& 1.814& 1.173 \\
 9549.2258& 11.788& 1.908& 1.215&  9621.1487& 11.572& 1.811& 1.144 \\
 9549.2979& 11.793& 1.868& 1.237&  9623.1519& 11.958& 1.935& 1.252 \\
 9549.3458& 11.756& 1.898& 1.224&  9624.1356& 11.938& 1.978& 1.253 \\
 9550.2969& 11.421& 1.687& 1.155&  9625.1434& 11.685& 1.877& 1.168 \\
 9551.2928& 11.501& 1.761& 1.179&  9631.1407& 11.771& 2.036& 1.193 \\
 9552.2914& 11.678& 1.825& 1.224&  9632.1379& 11.659& 1.859& 1.200 \\
 9553.2830& 11.716& 1.843& 1.209&  9633.1322& 11.348& 1.715& 1.144 \\
 9554.2971& 11.714& 1.815& 1.223&  9634.1418& 11.512& 1.856& 1.174 \\
 9556.2860& 11.736& 1.949& 1.251&           &       &      &       \\
\hline
\end{tabular}
\large
\bigskip

Table 3. BVR observations of BQ Ser.

\vskip 1mm
\normalsize
\begin{tabular}{cccccccc}
\hline
JD hel & V & B$-$V & V$-$R$_c$ & JD hel & V & B$-$V & V$-$R$_c$ \\
2440000+ & & & & 2440000+ & & & \\
\hline
\\
 9514.3464 & 9.755 & 1.568 & .951 & 9534.2937 & 9.509 & 1.491 & .907 \\
 9514.4133 & 9.751 & 1.575 & .940 & 9534.3406 & 9.524 & 1.489 & .911 \\
 9515.3724 & 9.241 & 1.315 & .821 & 9534.3965 & 9.522 & 1.520 & .903 \\
 9516.3902 & 9.409 & 1.458 & .887 & 9535.2625 & 9.750 & 1.585 & .936 \\
 9517.3892 & 9.709 & 1.592 & .950 & 9535.3275 & 9.771 & 1.583 & .955 \\
 9519.4131 & 9.364 & 1.391 & .866 & 9535.3956 & 9.769 & 1.604 & .950 \\
 9521.3329 & 9.540 & 1.480 & .911 & 9536.2553 & 9.458 & 1.424 & .866 \\
 9522.3627 & 9.576 & 1.518 & .917 & 9536.3761 & 9.367 & 1.367 & .854 \\
 9522.4247 & 9.597 & 1.513 & .913 & 9537.2575 & 9.288 & 1.393 & .856 \\
 9523.3214 & 9.656 & 1.521 & .922 & 9537.3236 & 9.320 & 1.397 & .855 \\
 9523.4009 & 9.648 & 1.491 & .915 & 9537.3965 & 9.342 & 1.415 & .859 \\
 9524.3012 & 9.230 & 1.355 & .828 & 9538.2810 & 9.621 & 1.548 & .919 \\
 9524.3704 & 9.244 & 1.331 & .846 & 9538.3301 & 9.639 & 1.567 & .932 \\
 9524.4329 & 9.238 & 1.342 & .844 & 9539.2555 & 9.718 & 1.558 & .939 \\
 9525.2976 & 9.457 & 1.473 & .907 & 9539.3417 & 9.699 & 1.551 & .929 \\
 9526.2867 & 9.733 & 1.584 & .947 & 9539.3794 & 9.703 & 1.534 & .932 \\
 9529.2874 & 9.553 & 1.541 & .919 & 9540.2445 & 9.446 & 1.431 & .887 \\
 9530.2713 & 9.652 & 1.541 & .923 & 9540.3371 & 9.420 & 1.429 & .870 \\
 9530.3559 & 9.650 & 1.530 & .924 & 9541.2485 & 9.450 & 1.453 & .874 \\
 9530.4108 & 9.636 & 1.534 & .914 & 9541.3138 & 9.468 & 1.432 & .884 \\
 9533.2732 & 9.318 & 1.400 & .848 & 9541.3805 & 9.459 & 1.449 & .883 \\
 9533.3506 & 9.321 & 1.399 & .854 & 9542.2496 & 9.440 & 1.479 & .883 \\
 9533.4046 & 9.322 & 1.409 & .861 & 9542.3022 & 9.463 & 1.457 & .895 \\
\hline
\end{tabular}
\large
\vfill \eject

\centerline{4}
\vskip 1mm
Table 3 (cont.)
\vskip 1mm
\normalsize
\begin{tabular}{cccccccc}
\hline
JD hel & V & B$-$V & V$-$R$_c$ & JD hel & V & B$-$V & V$-$R$_c$ \\
2440000+ & & & & 2440000+ & & & \\
\hline
\\
 9530.3559 & 9.650 & 1.530 & .924 & 9541.2485 & 9.450 & 1.453 & .874 \\
 9530.4108 & 9.636 & 1.534 & .914 & 9541.3138 & 9.468 & 1.432 & .884 \\
 9533.2732 & 9.318 & 1.400 & .848 & 9541.3805 & 9.459 & 1.449 & .883 \\
 9533.3506 & 9.321 & 1.399 & .854 & 9542.2496 & 9.440 & 1.479 & .883 \\
 9533.4046 & 9.322 & 1.409 & .861 & 9542.3022 & 9.463 & 1.457 & .895 \\
 9542.3715 & 9.466 & 1.449 & .883 & 9556.2931 & 9.729 & 1.595 & .945 \\
 9543.2500 & 9.534 & 1.520 & .904 & 9557.2447 & 9.632 & 1.462 & .914 \\
 9543.3144 & 9.549 & 1.508 & .922 & 9559.2195 & 9.545 & 1.520 & .917 \\
 9545.2367 & 9.291 & 1.355 & .841 & 9559.2952 & 9.567 & 1.522 & .907 \\
 9545.2912 & 9.260 & 1.356 & .836 & 9560.2280 & 9.701 & 1.546 & .947 \\
 9546.2404 & 9.376 & 1.416 & .885 & 9560.3322 & 9.682 & 1.563 & .926 \\
 9546.3047 & 9.386 & 1.433 & .874 & 9561.3083 & 9.517 & 1.478 & .886 \\
 9546.3794 & 9.406 & 1.458 & .879 & 9563.3111 & 9.391 & 1.419 & .869 \\
 9547.2296 & 9.663 & 1.573 & .936 & 9564.2363 & 9.498 & 1.485 & .902 \\
 9547.2857 & 9.696 & 1.578 & .955 & 9617.0962 & 9.627 & 1.486 & .885 \\
 9548.3153 & 9.714 & 1.541 & .920 & 9620.2112 & 9.785 & 1.542 & .939 \\
 9548.3546 & 9.693 & 1.527 & .932 & 9621.1813 & 9.551 & 1.461 & .873 \\
 9549.2296 & 9.294 & 1.362 & .837 & 9623.1762 & 9.500 & 1.444 & .886 \\
 9549.3012 & 9.290 & 1.367 & .839 & 9625.1939 & 9.651 & 1.545 & .912 \\
 9549.3496 & 9.310 & 1.364 & .858 & 9626.2175 & 9.438 & 1.423 & .877 \\
 9550.3007 & 9.474 & 1.494 & .883 & 9631.1572 & 9.406 & 1.478 & .858 \\
 9551.2960 & 9.592 & 1.510 & .907 & 9632.2027 & 9.620 & 1.530 & .928 \\
 9552.2953 & 9.566 & 1.514 & .909 & 9633.1754 & 9.634 & 1.497 & .931 \\
 9553.2908 & 9.607 & 1.509 & .907 & 9634.1830 & 9.591 & 1.518 & .925 \\
 9554.3017 & 9.270 & 1.351 & .831 &           &       &       &      \\
\hline
\end{tabular}
\large
\end{center}

\vskip 1cm

\beginauthors
 L.N. BERDNIKOV
 O.V. VOZIAKOVA
Sternberg Astronomical Institute
13, Universitetskij prosp.
Moscow 119899, Russia
\authorsrightcol
M.A. IBRAGIMOV
Astronomical Institute
33, Astronomicheskaya str.
Tashkent, 700052
Republic of Uzbekistan
\vskip 2mm
\endauthors

\vskip9mm
%\references
Reference:

Berdnikov L.N., 1992, {\it Pis'ma Astron. Zh.}, {\bf 18}, 654

\end{document}


