COMMISSION 27 OF THE I. A. U. INFORMATION BULLETIN ON VARIABLE STARS Number 1513 Konkoly Observatory Budapest 1978 December 14 V-R COLOURS OF RED VARIABLE STARS During the years 1973-1974 the authors observed the variable stars of late spectral classes photoelectrically with the 20-inch reflector of Urals University Observatory. The colour-indices were determined with mean error +-0.009m. Larger errors for some stars are produced by variability. Results of observations are given in Table 1. First column contains the stellar identification of Catalogue of Bright Stars (1964). The GCVS names (3rd edition, 1969 and its Supplements) or numbers of stars according to First (1951) and Second (1965) Catalogue of Suspected Variable Stars are listed in second column. Third, fourth and fifth column. contain the heliocentric times J.D. of observations, colour-indices V-R, mean errors, respectively. Table I ----------------------------------------------- BS=HR Name J.D.hel V-R me 244... ----------------------------------------------- 46 AD Cet 2275.4229 1.541m+-0.017m 2277.4625 1.453 2277.4667 1.460 2310.3743 1.515 2310.3785 1.496 80 100 017 2272.3403 0.972 0.013 2272.3993 1.011 2277.2771 0.976 2324.1778 1.021 2324.2521 1.040 103 TV Psc 1901.2854 1.588 0.028 1901.3250 1.553 1901.3951 1.543 1958.2333 1.573 1958.3014 1.591 2077.1715 1.724 2077.2069 1.751 2104.1340 1.799 2307.2014 1.490 2276.3764 1.544 2277.4313 1.560 2309.1750 1.695 211 88 1901.2917 1.670 0.023 1901.3361 1.637 1901.4035 1.591 2077.2208 1.792 2078.2035 1.749 2274.3764 1.655 2307.1806 1.690 2307.2069 1.673 2319.4639 1.579 587 AR Cet 2018.2090 2.051 0.052 2018.2299 2.125 2056.1250 1.876 2318.4257 2.004 631* - 1900.3688 1.535 0.019 2275.3354 1.565 2275.3903 1.597 2278.2729 1.602 2280.2674 1.503 689* - 2098.1181 1.453 0.025 2098.1521 1.471 2333.3569 1.377 2356.2826 1.369 2357.3222 1.348 750 230 2112.1917 1.522 0.022 2114.2694 1.527 2277.3896 1.433 2277.2632 1.416 2278.3111 1.390 2319.3875 1.401 2322.3826 1.396 758 R Tri 2142.1875 1.547 0.029 2356.1146 1.390 2356.1382 1.400 2356.1479 1.405 2356.1785 1.416 2356.5583 1.336 992 102 411 2309.4306 0.765 0.030 2322.3729 0.838 2356.4556 0.686 2356.4597 0.704 2356.4736 0.683 1009* - 1801.3917 1.563 0.006 1802.3833 1.569 1802.3056. 1.580 1804.3597 1.596 1809.3028 1.581 1813.3035 1.561 1815.3701 1.545 1105 BD Cam 1803.3590 1.673 0.008 1807.3972 1.670 1809.2931 1.668 1813.2979 1.640 1814.3771 1.634 1335* - 1803.3688 1.178 0.004 1808.4181 1.201 1809.2840 1.198 1813.3118 1.200 1815.3854 1.188 1451 DV Eri 1736.1118 1.540 0.019 1736.1500 1.527 2050.2201 1.462 2050.2750 1.488 2056.2688 1.438 2098.1292 1.551 1556 o^1 Ori 2079.3979 1.751 0.017 2097.2944 1.756 2097.3194 1.773 2112.1986 1.694 1562 100 421 1735.1715 1.394 0.026 1735.2150 1.422 1735.2188 1.391 1736.1250 1.436 2356.5403 1.299 1571 100 422 1735.1639 0.874 0.012 1735.2243 0.840 2123.1965 0.847 2126.1840 0.892 1709 100 461 1757.2417 1.017 0.010 1758.1896 0.974 1758.2146 0.996 1758.2375 1.016 1722 PU Aur 1734.3118 1.750 0.022 2309.2590 1.838 2310.2243 1.844 2322.2701 1.786 1802* - 1801.3465 1.420 0.005 1802.4014 1.406 1804.3340 1.408 1816.2778 1.397 1834 CI Ori 1734.2306 1.182 0.009 1735.1958 1.187 1735.2319 1.191 1953.4333 1.150 2037 100 692 1761.1924 0.980 0.005 1761.2063 1.004 2078.2743 0.986 2078.3409 0.997 2063 U Ori 2322.2958 1.348 0.015 2323.2979 1.394 2330.2792 1.408 2330.3083 1.348 2356.3472 1.334 2356.4159 1.282 2356.4993 1.307 2357.1965 1.394 2357.3354 1.265 2215 UW Lyn 1802.4104 1.698 0.018 1803.3396 1.700 1815.3021 1.698 2330.1444 1.635 2330.2215 1.619 2275 100 729 1761.1688 1.332 0.013 1761.1993 1.360 1761.2125 1.330 2104.1944 1.388 2289 psi^1 Aur 1734.3201 1.399 0.025 1779.1917 1.384 1780.3951 1.484 1781.3125 1.483 1804.2569 1.431 2144.3750 1.462 2144.4264 1.492 2302.1611 1.541 2303.2535 1.591 2308.1854 1.304 2480 100 761 2097.3618 1.099 0.002 2112.3708 1.091 2113.3250 1.098 2114.2035 1.096 2508* - 2055.3340 1.407 0.031 2097.2361 1.554 2104.1875 1.516 2114.1646 1.486 2609 OV Cep 1780.4090 1.313 0.008 1782.2159 1.287 1782.2778 1.312 1783.2715 1.310 2291.2632 1.252 2309.1659 1.297 2333.2813 1.275 2356.3549 1.280 2639 100 794 1735.2778 1.324 0.014 1736.2347 1.313 1736.2889 1.377 1761.1507 1.333 2703 UY Lyn 1734.3722 1.562 0.012 1815.3431 1.552 1822.3785 1.602 1823.3090 1.567 2153.4667 1.580 2160.4500 1.634 2717 BQ Gem 1761.3278 1.763 0.008 1761.3330 1.755 1780.1743 1.751 1780.2736 1.724 2742 VZ Cam 1761.2917 1.606 0.014 1782.2090 1.538 1782.2313 1.554 2124.4806 1.609 2148.4076 1.591 2333.2882 1.534 2795* - 2080.4646 1.240 0.003 2097.4215 1.242 2097.4563 1.250 2099.3438 1.236 2103.4375 1.231 2104.2361 1.219 2104.3486 1.237 2105.4243 1.225 2938 100 883 1734.3528 1.254 0.008 1802.2500 1.301 2049.4007 1.261 2097.4021 1.296 2097.4417 1.307 2103.4299 1.282 2104.4181 1.301 2983* - 1747.3361 1.218 0.007 1747.3417 1.217 2079.3840 1.192 2097.4479 1.200 2098.4535 1.197 2112.2063 1.185 2112.4090 1.192 2114.1965 1.132 2317.4076 1.244 2999* - 1734.3840 1.392 0.005 2056.3909 1.402 2112.2250 1.373 2148.3583 1.392 2155.3909 1.388 2158.3743 1.407 2159.3167 1.406 3013* 1747.3535 1.332 0.005 1747.4146 1.324 1747.4368 1.333 2112.2861 1.295 2112.3097 1.294 2112.3542 1.312 2157.3375 1.315 2159.3069 1.314 3550 101 010 1734.2659 1.018 0.009 1778.3521 1.047 1782.3188 1.052 2322.4979 1.016 3639 RS Cnc 1779.3646 2.479 0.025 1779.4035 2.367 1780.3431 2.455 1781.3590 2.480 1782.4181 2.511 3769* - 1779.4535 1.180 0.021 1780.2563 1.216 1780.3701 1.306 1781.3646 1.225 2124.5104 1.254 3820* - 1803.2521 1.300 0.010 1804.2208 1.265 1785.3264 1.282 1786.3049 1.288 2124.5028 1.325 3866* - 1802.2757 1.361 0.005 1804.2347 1.351 1823.2868 1.354 2103.3681 1.358 2104.2639 1.382 2104.3576 1.381 2124.3903 1.357 3870 CS UMa 1781.3917 1.563 0.015 1782.3939 1.553 1786.4264 1.539 1800.4007 1.6b4 2103.5292 1.629 2310.2549 1.545 3882 R Leo 2076.4715 3.598 0.053 2356.4382 3.382 2356.4444 3.395 2356.4708 3.380 4127 101 134 1787.3285 1.431 0.004 1798.2472 1.452 1798.2778 1.447 1801.2931 1.444 4483 omega Vir 1781.2153 1.848 0.015 1783.2056 1.871 1783.2333 1.869 1787.2875 1.807 4765 CQ Dra 1787.3882 1.487 0.007 1787.4542 1.511 1788.3674 1.476 1788.3764 1.482 1825.3701 1.468 4800 T UMa 2276.2813 1.545 0.229 2277.2500 1.520 2308.1757 2.141 2308.2299 2.114 2330.1938 0.871 2330.2668 0.880 5015 7013 1788.2951 1.366 0.015 1788.4514 1.393 1798.3771 1.373 1799.3285 1.357 2124.5347 1.450 2155.4576 1.429 5334* - 1822.3236 1.302 0.006 1823.3215 1.304 1916.2264 1.314 1916.2667 1.329 5590* - 1788.3278 1.323 0.009 1788.4659 1.340 1798.3181 1.362 1798.3590 1.362 5894 R Ser 2273.2986 3.213 0.356 2280.2188 2.509 2323.2563 1.984 6086 AT Dra 1786.3896 1.727 0.007 1799.4243 1.750 1800.4306 1.757 1801.4243 1.766 2142.2417 1.777 2396.4347 1.743 6107* - 1813.3931 1.374 0.002 1816.3806 1.360 1822.3417 1.372 1823.3938 1.366 2310.2951 1.368 6200* - 1816.3875 1.370 0.003 1822.3917 1.362 1823.3708 1.366 1825.3382 1.381 2142.2542 1.371 6227 101 605 1786.4701 1.538 0.022 1788.4132 1.536 1797.4188 1.588 1799.3368 1.612 2280.2536 1.485 6452 V656 Her 1787.4326 1.331 0.014 1788.4201 1.284 1797.4409 1.298 1798.3514 1.283 2291.2715 1.221 2291.3236 1.236 2299.2293 1.286 6765* - 1788.4264 1.514 0.004 1797.4111 1.526 1797.3917 1.525 1798.3632 1.532 6815 V669 Her 1798.2931 1.447 0.029 1799.2353 1.471 1801.2563 1.492 2098.4125 1.581 7243 R Aql 2277.3111 3.930 0.172 2291.2826 3.269 2309.2993 2.869 2310.2028 2.678 2310.2319 2.698 2310.3035 2.780 2330.2542 2.795 7414 101 850 1798.4319 1.524 0.015 1799.4069 1.462 1801.4146 1.473 1823.4021 1.463 7566 V1509 Cyg 2132.3938 1.401 0.013 2341.3896 1.335 2356.3007 1.356 2356.3708 1.364 7576 8468 1733.2938 0.927 0.011 1744.3396 0.930 1779.2069 0.895 1780.3159 0.950 7645 VZ Sge 1793.4326 1.744 0.005 1801.3694 1.764 1802.3778 1.742 1825.2889 1.754 7798 102 998 1798.3028 0.762 0.008 1804.2743 0.751 1802.2340 0.786 1814.2785 0.796 2143.3604 0.776 7851 101 996 1802.2382 1.406 0.011 1814.2840 1.367 1916.2730 1.340 1916.3438 1.342 1916.4472 1.335 2307.2556 1.343 7956 T Cyg 1814.2889 0.942 0.005 1824.3875 0.962 1916.3736 0.947 2104.5618 0.943 2357.3118 0.944 2396.2215 0.964 2396.2590 0.974 8015 102 046 1907.3382 1.099 0.004 1913.2743 1.082 1913.2938 1.095 1913.3550 1.108 1914.2736 1.104 8016 102 045 2112.3188 0.812 0.003 2113.3653 0.832 2114.3639 0.822 2124.3569 0.827 2124.3611 0.821 8044* - 1807.3632 1.494 0.009 1826.3083 1.456 1916.2896 1.449 2149.4771 1.448 2158.4576 1.449 8113 T Cep 1779.3396 3.320 0.098 2104.3847 3.768 2112.2507 3.423 2112.3292 3.580 8289* - 1915.3021 1.380 0.009 1917.3826 1.397 2302.2361 1.406 2303.2368 1.416 2322.3417 1.432 8306 8683 2309.2486 1.352 0.004 2310.2451 1.338 2322.4326 1.333 2323.4243 1.309 8306 8683 2343.2472 1.332 0.004 2356.1285 1.336 2356.2049 1.344 2356.2569 1.341 8416 102 144 1782.4396 1.690 0.003 1782.4611 1.702 1786.4583 1.697 1787.3576 1.701 8594 8775 1733.2951 0.682 0.024 1733.3153 0.673 1786.3409 0.707 1787.2368 0.776 8621 102 195 1787.3424 1.774 0.033 1303.3306 1.710 1804.3847 1.708 2132.2382 1.848 8703* - 1914.3236 0.837 0.007 1916.2455 0.860 1916.3184 0.861 2309.1932 0.858 2330.3236 0.828 8815 GZ Peg 2077.1313 0.868 0.051 2079.1215 2.006 2098.1021 1.969 2395.2264 1.779 8850 chi Aqr 1914.3111 1.751 0.011 1916.3049 1.714 1916.3604 1.702 1916.4250 1.741 8904* - 1787.1965 1.416 0.008 2103.3806 1.400 2104.2785 1.434 2114.2424 1.400 8940 5749 2078.1764 1.886 0.030 2275.3484 1.800 2309.1875 1.809 2322.3250 1.731 2330.2368 1.722 8943 103 124 2280.2743 1.047 0.009 2310.3104 1.059 2318.4701 1.009 2330.2424 1.056 2330.3097 1.049 8991 102 279 1958.2826 1.325 0.018 2077.1174 1.364 2078.1409 1.400 2307.1667 1.434 2322.2159 1.386 9036* - 2274.3576 1.379 0.011 2301.3431 1.424 2302.2194 1.418 2309.2194 1.386 9047 XZ Psc 1916.3347 1.872 0.025 2077.1090 1.844 9047 XZ Psc 2275.4159 1.979 0.025 2322.2333 1.922 2357.2521 1.859 9066 R Cas 2309.3597 3.076 0.423 2322.1674 3.098 2322.3917 2.984 2393.1229 4.977 2393.1368 4.913 2396.3500 4.937 9103 102 299 1916.3889 1.113 0.007 2275.4319 1.119 2275.4361 1.117 2383.1424 1.112 2383.1722 1.081 --------------------------------------------- *) Data on variability of these stars are included in Card- Catalogue of variable stars of the Sternberg State Astronomical Institute. O.P. PYL'SKAJA, P.E. ZAKHAROVA, T.S. POLUSHINA Urals University Observatory Sverdlovsk, U.S.S.R.