COMMISSIONS 27 AND 42 OF THE IAU INFORMATION BULLETIN ON VARIABLE STARS Number 3989 Konkoly Observatory Budapest 15 February 1994 HU ISSN 0374 - 0676 UBVR OBSERVATIONS OF THE DOUBLE-MODE CEPHEID EW Sct Recently one of us (Berdnikov, 1992) has decomposed available photoelectric observations of all double-mode Cepheids into two oscillations. It was pointed out as well that the number of the existing observations is not sufficient for certain investigation of light curve variations in the majority of these stars. Therefore we continue to carry out the observations of the all accessible double-mode Cepheids. Table 1 -------------------------------------------------------------------------------- JD hel V U-B B-V V-R JD hel V U-B B-V V-R 2440000+ 2440000+ -------------------------------------------------------------------------------- 9197.3698 7.948 - 1.730 1.601 9220.2711 8.266 - 1.854 1.692 9198.2252 7.881 1.404 1.697 1.576 9221.3253 7.820 - 1.689 1.543 9198.3195 7.892 1.375 1.704 1.578 9222.2742 7.752 - 1.647 1.541 9199.3265 7.926 1.368 1.737 1.600 9224.2848 8.126 - 1.833 1.654 9200.2336 7.935 1.389 1.722 1.592 9225.2462 8.088 1.438 1.792 1.636 9201.2402 7.956 1.430 1.742 1.612 9226.2482 7.991 1.402 1.744 1.607 9201.3581 7.948 1.360 1.751 1.609 9227.2403 8.000 1.400 1.762 1.607 9202.2454 8.071 1.460 1.795 1.650 9228.2499 7.885 1.383 1.684 1.575 9202.3606 8.098 - 1.817 1.656 9229.2403 7.808 1.376 1.687 1.562 9203.2287 8.201 1.545 1.824 1.669 9230.2433 7.902 - 1.748 1.599 9203.3499 8.199 1.483 1.843 1.673 9231.2446 8.149 - 1.853 1.664 9204.2258 7.885 1.359 1.684 1.560 9232.2318 8.253 - 1.847 1.684 9204.3484 7.852 1.349 1.662 1.568 9233.2339 7.812 - 1.653 1.544 9205.2293 7.672 1.337 1.610 1.522 9234.2333 7.725 - 1.628 1.540 9205.3585 7.704 1.276 1.625 1.541 9235.2271 7.975 - 1.804 1.613 9206.2559 7.894 - 1.751 1.597 9236.2112 8.172 - 1.873 1.669 9206.3683 7.947 - 1.755 1.620 9237.2034 8.152 - 1.826 1.655 9207.2359 8.194 - 1.823 1.690 9238.1957 7.928 - 1.730 1.598 9207.3527 8.186 - 1.889 1.682 9239.1998 7.913 - 1.707 1.588 9209.2200 7.942 1.391 1.706 1.592 9240.2122 7.925 - 1.721 1.592 9209.3607 7.910 - 1.650 1.566 9241.2145 7.930 - 1.720 1.602 9210.2900 7.812 1.355 1.665 1.552 9243.1931 8.117 - 1.825 1.658 9211.2675 7.964 - 1.757 1.612 9244.2177 8.188 - 1.827 1.658 9212.2708 8.040 - 1.777 1.636 9245.2152 7.779 - 1.638 1.545 9218.2849 7.923 1.386 1.726 1.607 9298.1021 7.744 - 1.631 1.530 9219.2760 8.177 - 1.858 1.685 -------------------------------------------------------------------------------- Photoelectric observations of double-mode Cepheid EW Sct were carried out in summer- autumn 1993. The 60-cm reflector of the Mt. Maidanak observatory of the Tashkent Astronomical Institute was used and 51 UBVR measurements (Table 1) were obtained. The authors wish to express their thanks to Dr. V.S. Shevchenko for allocation of observing time. L. BERDNIKOV M. IBRAGIMOV Sternberg Astronomical Institute, Astronomical Institute, Tashkent, Moscow, Russia Republic of Uzbekistan University of Saratov, Saratov, Russia Reference: Berdnikov L.N., 1992, Pis`ma Astron. Zh., 18, 654 [BIBCODE 1992SvAL...18..259B ]