IAU COMMISSION 27 UNPUBLISHED DATA FILE 255E 9 pages including cover sheet March, 1993 Photometry of Thirteen Stars in Serpens, Sextans, Taurus, Triangulum Ursa Major, Virgo and Vulpecula This file contains tables of CCD photometry for thirteen stars in the constellations Serpens (one star), Sextans (two stars), Taurus (three stars), Triangulum (one star), Ursa Major (three stars), Virgo (one star) and Vulpecula (two stars). The columns in each table list the Heliocentric Julian Date, the phase calculated with the elements listed at the head of the table, the V magnitude and its error (in milli-magnitudes), the R magnitude and its error and the V-R color and its error. The errors are only formal errors based on photon statistics and are not intended to be taken as an actual indication of the accuracy of the magnitudes. When a star falls on one of the more serious defects on the CCD, the magnitude can not be accurately recovered. Such cases are indicated in the tables by an error which has been arbitrarily set to 50 mmg or larger. These observations were made with the CCD photometer on the Behlen Observatory 76-cm telescope. The observational techniques and the results are described in Schmidt (A.J. 102, 1766, 1991). The light curves as well as finding charts are contained in a publication in press (Schmidt and Reiswig, in preparation, 1993). Edward G. Schmidt Behlen Observatory Department of Physics University of Nebraska Lincoln, NE 68588-0111 USA ******************************************************************************* PHOTOMETRIC DATA FOR DF Ser PERIOD: 0.437795 EPOCH OF MAXIMUM: 2,447,661.826 ------------------------------------------------ HJD - PHASE V s.d. R s.d. V-R s.d. 2,460,000 ------------------------------------------------ 7660.767 0.581 13.081 3 12.776 3 0.313 4 7660.813 0.686 13.139 3 12.829 4 0.316 5 7660.857 0.786 13.255 4 12.985 3 0.276 5 7661.714 0.745 13.236 5 12.883 4 0.358 6 7661.770 0.873 13.312 5 12.956 5 0.362 7 7661.822 0.992 12.158 3 11.992 3 0.173 4 7661.877 0.117 12.371 3 12.230 3 0.148 4 7667.630 0.258 12.661 3 12.472 4 0.197 5 7667.675 0.360 12.910 4 12.629 4 0.286 6 7667.715 0.452 12.985 5 12.693 5 0.298 7 7667.767 0.569 13.050 4 12.764 5 0.292 6 7672.739 0.927 13.061 4 12.844 5 0.225 6 7672.780 0.020 12.058 2 12.010 2 0.058 3 7672.829 0.132 12.380 3 12.239 3 0.149 4 ------------------------------------------------ PHOTOMETRIC DATA FOR U Sex PERIOD: 0.533835 EPOCH OF MAXIMUM: 2,447,896.960 ------------------------------------------------ HJD - PHASE V s.d. R s.d. V-R s.d. 2,460,000 ------------------------------------------------ 7848.942 0.052 13.820 5 13.709 6 0.116 8 7877.967 0.421 14.623 12 14.309 13 0.318 18 7896.789 0.680 14.747 6 14.456 6 0.294 8 7896.912 0.910 14.652 4 14.434 5 0.220 6 7896.947 0.975 13.838 4 13.768 5 0.070 6 7897.002 0.079 13.950 4 13.820 5 0.132 6 7898.766 0.383 14.556 7 14.267 8 0.290 11 7898.823 0.489 14.663 7 14.378 7 0.287 10 7898.891 0.617 14.723 4 14.424 5 0.301 6 7898.931 0.693 14.740 6 14.448 7 0.294 9 7915.716 0.134 14.071 5 13.906 5 0.168 7 7915.756 0.210 14.220 5 14.013 6 0.209 8 7915.788 0.269 14.331 5 14.120 6 0.212 8 7921.823 0.575 14.701 6 14.411 7 0.293 9 7922.770 0.348 14.515 7 14.245 8 0.273 11 7926.792 0.882 14.855 7 14.580 8 0.277 11 7926.872 0.032 13.721 4 13.628 4 0.094 6 ------------------------------------------------ PHOTOMETRIC DATA FOR V Sex PERIOD: 0.487430 EPOCH OF MAXIMUM: 2,447,898.939 ------------------------------------------------ HJD - PHASE V s.d. R s.d. V-R s.d. 2,460,000 ------------------------------------------------ 7245.846 0.129 12.215 4 11.958 3 0.262 5 7608.688 0.528 12.893 3 12.570 2 0.326 4 7848.896 0.334 12.597 1 12.380 1 0.221 1 7848.948 0.440 12.792 2 12.527 2 0.270 3 7865.934 0.287 12.501 2 12.294 2 0.210 3 7877.927 0.892 12.919 2 12.674 2 0.247 3 7877.971 0.982 12.307 1 12.191 2 0.119 2 7878.008 0.058 12.218 2 12.009 2 0.213 3 7896.780 0.570 12.931 2 12.622 2 0.311 3 7896.822 0.656 12.914 1 12.634 1 0.281 1 7896.917 0.852 12.999 2 12.718 2 0.283 3 7897.018 0.058 12.161 53 12.035 2 0.126 53 7897.796 0.655 12.940 2 12.640 2 0.301 3 7897.907 0.882 12.939 2 12.702 2 0.237 3 7898.827 0.770 12.993 2 12.694 2 0.301 3 7898.949 0.020 12.169 1 12.053 1 0.116 1 7899.019 0.164 12.411 1 12.200 2 0.211 2 7915.794 0.580 12.945 2 12.647 2 0.299 3 7926.844 0.250 12.522 1 12.290 1 0.233 1 7926.882 0.328 12.680 1 12.360 53 0.321 53 ------------------------------------------------ PHOTOMETRIC DATA FOR BR Tau PERIOD: 0.390593 EPOCH OF MAXIMUM: 2,448,233.701 ------------------------------------------------ HJD - PHASE V s.d. R s.d. V-R s.d. 2,460,000 ------------------------------------------------ 8160.824 0.420 13.064 3 12.582 4 0.481 5 8166.765 0.629 13.171 6 12.702 5 0.468 8 8166.802 0.725 13.226 5 12.742 5 0.483 7 8166.876 0.913 13.386 5 12.895 5 0.490 7 8177.991 0.371 12.975 3 12.501 3 0.473 4 8191.840 0.826 13.324 5 12.833 4 0.490 6 8192.720 0.079 12.246 2 11.962 2 0.284 3 8192.751 0.159 12.492 3 12.149 3 0.343 4 8205.685 0.272 12.763 4 12.375 4 0.388 6 8205.784 0.527 13.178 7 12.661 6 0.517 9 8206.972 0.567 13.190 5 12.707 4 0.481 6 8210.672 0.041 12.172 3 11.912 3 0.257 4 8210.861 0.526 13.137 5 12.665 4 0.471 6 8227.655 0.522 13.152 15 12.680 15 0.472 21 8233.693 0.981 12.596 4 12.216 4 0.379 6 8233.699 0.995 12.214 3 11.973 3 0.239 4 ------------------------------------------------ PHOTOMETRIC DATA FOR CN Tau PERIOD: 1.792800 EPOCH OF MAXIMUM: 2,447,548.750 ------------------------------------------------ HJD - PHASE V s.d. R s.d. V-R s.d. 2,460,000 ------------------------------------------------ 7513.571 0.378 12.779 3 12.221 2 0.552 4 7513.606 0.397 12.812 2 12.183 2 0.622 3 7513.643 0.418 12.788 2 12.246 2 0.536 3 7513.677 0.437 12.824 2 12.251 2 0.567 3 7513.728 0.465 12.848 2 12.279 2 0.563 3 7513.780 0.494 12.859 2 12.285 2 0.569 3 7513.852 0.535 12.874 2 12.324 2 0.543 3 7513.866 0.542 12.866 3 12.307 2 0.552 4 7514.860 0.097 12.558 2 12.075 1 0.478 2 7514.968 0.157 12.591 2 12.074 1 0.511 2 7547.807 0.474 12.848 3 12.290 2 0.551 4 7547.850 0.498 12.836 3 12.292 2 0.537 4 7548.685 0.964 12.557 2 12.048 1 0.504 2 7548.713 0.979 12.558 2 12.063 1 0.489 2 7548.738 0.993 12.502 2 12.044 1 0.452 2 7548.768 0.010 12.542 2 12.043 1 0.494 2 7548.815 0.036 12.540 2 12.043 1 0.492 2 7568.766 0.165 12.579 2 12.082 1 0.491 2 7569.628 0.646 12.905 2 12.332 1 0.567 2 7569.656 0.661 12.900 2 12.323 1 0.571 2 7569.684 0.676 12.904 2 12.339 1 0.558 2 7569.709 0.691 12.905 2 12.330 1 0.569 2 7569.741 0.708 12.892 2 12.282 1 0.604 2 7569.772 0.726 12.878 2 12.311 1 0.561 2 7569.803 0.743 12.876 2 12.306 1 0.564 2 7591.670 0.940 12.608 2 12.091 1 0.514 2 7591.721 0.969 12.579 2 12.069 1 0.505 2 7611.594 0.053 12.518 2 12.046 1 0.469 2 7611.624 0.071 12.530 2 12.038 2 0.487 3 7771.888 0.464 12.781 2 12.252 2 0.526 3 7771.934 0.489 12.825 2 12.293 2 0.530 3 7772.889 0.022 12.560 4 12.038 2 0.519 4 7774.870 0.127 12.562 2 12.038 2 0.520 3 7774.912 0.150 12.569 2 12.058 2 0.508 3 7774.947 0.170 12.579 2 12.078 2 0.499 3 7779.858 0.909 12.730 2 12.166 2 0.560 3 7779.895 0.930 12.674 2 12.135 2 0.536 3 7779.958 0.964 12.615 2 12.111 2 0.501 3 7820.773 0.731 12.883 2 12.312 53 0.569 53 7820.807 0.750 12.859 53 12.317 4 0.539 53 7820.831 0.763 12.881 2 12.335 2 0.543 3 7820.852 0.775 12.873 2 12.293 2 0.578 3 7820.920 0.813 12.836 2 12.287 2 0.546 3 7821.752 0.277 12.655 2 12.135 2 0.516 3 7821.839 0.326 12.666 2 12.127 2 0.535 3 7821.873 0.345 12.694 2 12.151 2 0.539 3 7821.930 0.376 12.726 2 12.203 2 0.521 3 7825.726 0.494 12.827 2 12.271 1 0.553 2 7825.785 0.527 12.836 2 12.271 2 0.563 3 7825.895 0.588 12.872 2 12.309 2 0.560 3 7825.933 0.609 12.889 4 12.310 4 0.577 6 7844.876 0.175 12.551 2 12.056 2 0.490 3 7844.876 0.175 12.551 2 12.056 2 0.490 3 7844.936 0.208 12.578 2 12.073 2 0.502 3 7876.704 0.928 12.670 2 12.159 2 0.507 3 7876.762 0.961 12.628 2 12.123 2 0.502 3 7876.788 0.975 12.594 2 12.112 2 0.478 3 7876.838 0.003 12.552 2 12.067 2 0.481 3 7898.796 0.251 12.614 2 12.098 2 0.514 3 7774.870 0.127 12.562 2 12.038 2 0.520 3 7774.912 0.150 12.569 2 12.058 2 0.508 3 7820.885 0.793 12.859 2 12.297 2 0.560 3 7898.856 0.284 12.632 2 12.116 2 0.514 3 ------------------------------------------------ PHOTOMETRIC DATA FOR IY Tau PERIOD: 0.376490 EPOCH OF MAXIMUM: 2,447,876.756 ------------------------------------------------ HJD - PHASE V s.d. R s.d. V-R s.d. 2,460,000 ------------------------------------------------ 7876.632 0.670 12.916 7 12.236 6 0.683 9 7876.673 0.779 12.862 6 12.246 5 0.618 8 7876.712 0.884 12.818 6 12.168 5 0.651 8 7876.757 0.002 12.671 5 12.066 5 0.607 7 7876.792 0.096 12.688 6 12.091 5 0.599 8 7876.834 0.209 12.769 6 12.113 5 0.659 8 7876.868 0.298 12.862 6 12.174 5 0.690 8 7876.903 0.390 12.930 7 12.236 6 0.695 9 7876.905 0.397 12.953 4 12.239 4 0.715 6 7876.938 0.482 12.985 53 12.306 4 0.682 53 7896.557 0.593 12.946 4 12.259 2 0.690 4 7896.583 0.663 12.910 4 12.231 3 0.683 5 ------------------------------------------------ PHOTOMETRIC DATA FOR SX Tri PERIOD: 0.742959 EPOCH OF MAXIMUM: 2,447,464.810 ------------------------------------------------ HJD - PHASE V s.d. R s.d. V-R s.d. 2,460,000 ------------------------------------------------ 7196.612 0.014 14.321 23 14.059 22 0.261 32 7197.645 0.405 14.654 31 14.274 22 0.379 38 7197.723 0.509 14.728 34 14.349 31 0.379 46 7197.732 0.522 14.740 40 14.386 28 0.353 49 7230.579 0.732 14.835 11 14.464 8 0.371 14 7230.590 0.748 14.844 12 14.483 8 0.363 14 7414.871 0.784 14.858 7 14.529 4 0.329 8 7414.946 0.884 14.706 6 14.363 4 0.344 7 7444.834 0.112 14.375 4 14.129 4 0.247 6 7444.895 0.195 14.479 5 14.172 4 0.309 6 7446.836 0.807 14.866 8 14.629 6 0.236 10 7464.764 0.938 14.471 6 14.236 4 0.236 7 7464.811 0.001 14.285 5 14.066 4 0.219 6 7464.890 0.107 14.380 7 14.106 5 0.275 9 7464.935 0.168 14.426 5 14.139 4 0.287 6 7464.985 0.236 14.516 6 14.220 5 0.296 8 8149.929 0.148 14.423 4 14.136 4 0.287 6 8150.882 0.431 14.676 5 14.321 5 0.354 7 8157.881 0.852 14.850 4 14.510 53 0.340 53 8166.819 0.882 14.740 6 14.409 6 0.331 8 8160.856 0.856 14.847 5 14.505 5 0.342 7 8205.675 0.181 14.429 3 14.153 3 0.276 4 8206.650 0.494 14.693 5 14.355 5 0.337 7 8210.650 0.878 14.752 4 14.434 5 0.316 6 8227.612 0.708 14.785 11 14.483 7 0.302 13 ------------------------------------------------ PHOTOMETRIC DATA FOR AP UMa PERIOD: 0.577073 EPOCH OF MAXIMUM: 2,447,659.750 ------------------------------------------------ HJD - PHASE V s.d. R s.d. V-R s.d. 2,460,000 ------------------------------------------------ 7612.648 0.377 14.109 6 13.830 7 0.278 9 7625.671 0.946 13.793 4 13.607 5 0.187 6 7625.797 0.163 13.856 5 13.594 6 0.262 8 7625.828 0.216 13.901 12 13.665 11 0.236 16 7625.834 0.228 13.967 15 13.668 13 0.300 20 7659.631 0.794 14.384 6 14.059 6 0.324 9 7659.640 0.810 14.385 6 14.080 6 0.307 9 7659.708 0.927 13.906 4 13.785 5 0.125 6 7659.764 0.024 13.558 4 13.402 5 0.159 6 7660.626 0.518 14.235 6 13.938 7 0.299 9 7660.682 0.614 14.280 8 13.972 9 0.308 12 7660.736 0.709 14.257 7 13.969 7 0.291 10 7661.691 0.363 14.117 6 13.815 6 0.303 8 7661.757 0.478 14.213 7 13.908 7 0.305 10 7661.808 0.566 14.250 9 13.963 8 0.290 12 8235.015 0.866 14.349 5 14.078 6 0.270 8 ------------------------------------------------ PHOTOMETRIC DATA FOR BD UMa PERIOD: 0.681147 EPOCH OF MAXIMUM: 2,448,017.760 ------------------------------------------------ HJD - PHASE V s.d. R s.d. V-R s.d. 2,460,000 ------------------------------------------------ 7953.869 0.200 13.267 3 13.048 4 0.218 5 7953.933 0.295 13.427 4 13.182 4 0.243 6 8003.718 0.385 13.555 53 13.525 5 0.025 53 8003.766 0.455 13.595 5 13.292 5 0.302 7 8017.669 0.866 14.158 6 13.591 5 0.566 8 8017.747 0.981 13.084 2 12.896 3 0.186 4 8018.738 0.436 13.689 3 13.296 3 0.392 4 8018.803 0.532 13.671 3 13.369 4 0.301 5 8021.617 0.662 13.749 3 13.436 3 0.313 4 8021.691 0.772 13.799 4 13.490 5 0.308 6 8049.648 0.815 13.884 5 13.559 3 0.324 6 8233.939 0.376 13.668 4 13.207 4 0.460 6 8234.955 0.867 13.886 5 13.606 5 0.279 7 8344.778 0.099 13.108 3 12.934 3 0.172 4 ------------------------------------------------ PHOTOMETRIC DATA FOR BK UMa PERIOD: 0.635700 EPOCH OF MAXIMUM: 2,447,876.991 ------------------------------------------------ HJD - PHASE V s.d. R s.d. V-R s.d. 2,460,000 ------------------------------------------------ 7574.779 0.600 13.046 3 12.771 3 0.273 4 7574.790 0.616 13.039 3 12.745 2 0.293 4 7574.799 0.632 13.060 3 12.756 2 0.303 4 7574.808 0.645 13.071 2 12.763 2 0.307 3 7591.693 0.206 12.839 3 12.539 3 0.297 4 7591.730 0.265 12.883 3 12.576 3 0.305 4 7591.757 0.307 12.914 3 12.603 3 0.308 4 7612.622 0.129 12.776 3 12.522 3 0.254 4 7612.653 0.179 12.826 3 12.523 4 0.301 5 7625.638 0.604 13.045 4 12.715 4 0.328 6 7625.643 0.612 13.044 2 12.727 3 0.314 4 7625.727 0.745 13.079 2 12.761 3 0.315 4 7625.773 0.816 12.952 2 12.698 2 0.252 3 7625.820 0.890 12.775 3 12.527 3 0.247 4 7626.619 0.148 12.842 3 12.536 3 0.304 4 7626.675 0.236 12.872 2 12.584 3 0.286 4 7629.598 0.833 12.834 9 12.589 7 0.242 11 7637.733 0.631 12.971 3 12.683 3 0.286 4 7637.750 0.657 13.043 4 12.730 3 0.311 5 7844.900 0.519 12.987 3 12.676 3 0.309 4 7872.925 0.604 13.048 3 12.712 3 0.334 4 7877.978 0.553 13.003 3 12.718 3 0.283 4 7876.825 0.738 13.062 3 12.765 3 0.295 4 7876.992 0.002 12.669 2 12.362 3 0.306 4 7896.864 0.261 12.886 2 12.604 2 0.278 3 ------------------------------------------------ PHOTOMETRIC DATA FOR BV Vir PERIOD: 0.496586 EPOCH OF MAXIMUM: 2,447,953.827 ------------------------------------------------ HJD - PHASE V s.d. R s.d. V-R s.d. 2,460,000 ------------------------------------------------ 7246.878 0.383 15.089 22 14.809 15 0.277 27 7247.758 0.154 14.616 13 14.504 10 0.112 16 7271.616 0.199 14.798 18 14.559 10 0.238 21 7629.658 0.206 14.635 33 14.395 22 0.237 39 7896.905 0.374 15.014 4 14.714 5 0.296 6 7897.928 0.434 15.125 5 14.795 5 0.326 7 7898.003 0.585 15.283 5 14.952 5 0.328 7 7919.976 0.833 15.229 4 14.894 5 0.330 6 7920.005 0.891 15.169 4 14.889 5 0.276 6 7926.800 0.575 15.225 6 14.915 7 0.308 9 7953.827 0.999 14.510 3 14.383 4 0.125 5 7953.891 0.128 14.621 4 14.422 4 0.195 6 7954.931 0.223 14.828 5 14.573 5 0.251 7 ------------------------------------------------ PHOTOMETRIC DATA FOR AW Vul PERIOD: 0.806451 EPOCH OF MAXIMUM: 2,447,771.772 ------------------------------------------------ HJD - PHASE V s.d. R s.d. V-R s.d. 2,460,000 ------------------------------------------------ 7771.711 0.924 -2.634 2 -2.300 2 -0.334 3 7771.772 0.000 -2.002 2 -1.618 2 -0.384 3 7771.854 0.101 -3.010 1 -2.626 2 -0.386 2 7774.618 0.529 -2.970 1 -2.565 1 -0.407 1 7774.780 0.730 -3.081 1 -2.690 1 -0.394 1 7774.823 0.783 -3.082 1 -2.676 1 -0.407 1 7774.856 0.824 -3.070 1 -2.666 1 -0.405 1 7814.629 0.143 -3.064 1 -2.658 1 -0.408 1 ------------------------------------------------ PHOTOMETRIC DATA FOR FH Vul PERIOD: 0.405438 EPOCH OF MAXIMUM: 2,447,837.667 ------------------------------------------------ HJD - PHASE V s.d. R s.d. V-R s.d. 2,460,000 ------------------------------------------------ 7771.777 0.485 13.195 6 12.890 6 0.306 8 7771.810 0.565 13.244 7 12.934 7 0.310 10 7771.841 0.642 13.237 7 12.935 7 0.303 10 7771.872 0.718 13.293 11 12.958 11 0.335 16 7771.873 0.723 13.265 7 12.967 7 0.298 10 7774.736 0.782 13.277 4 12.955 6 0.321 7 7776.619 0.426 13.154 14 12.828 7 0.328 16 7779.722 0.080 12.279 3 12.168 4 0.111 5 7779.765 0.186 12.630 3 12.436 5 0.194 6 7779.797 0.265 12.843 4 12.599 5 0.244 6 7779.825 0.334 12.970 4 12.701 4 0.269 6 7814.563 0.014 12.085 2 12.039 3 0.045 4 7814.596 0.097 12.336 2 12.215 3 0.121 4 7814.563 0.014 12.085 2 12.039 3 0.045 4 7814.596 0.097 12.336 2 12.215 3 0.121 4 7814.634 0.189 12.640 3 12.439 3 0.202 4 7820.665 0.065 12.214 2 12.115 3 0.099 4 7820.707 0.169 12.584 3 12.411 3 0.174 4 7820.730 0.224 12.740 3 12.525 3 0.214 4 7821.654 0.505 13.227 4 12.924 4 0.304 6 7837.663 0.989 12.156 4 12.132 5 0.026 6 7844.518 0.897 13.359 4 13.080 5 0.281 6 7844.532 0.933 13.197 4 12.964 4 0.235 6 7844.548 0.972 12.489 3 12.412 3 0.080 4 7844.518 0.897 13.359 4 13.080 5 0.281 6 7844.532 0.933 13.197 4 12.964 4 0.235 6 7844.548 0.972 12.489 3 12.412 3 0.080 4 7848.541 0.819 13.341 7 13.012 6 0.330 9 7848.568 0.887 13.409 4 13.113 6 0.298 7 7848.587 0.935 13.157 4 12.931 5 0.229 6 7848.606 0.979 12.333 3 12.291 3 0.044 4 7878.527 0.780 13.306 4 13.022 4 0.285 6 7878.544 0.821 13.335 5 13.077 5 0.259 7 7878.562 0.866 13.379 5 13.104 5 0.276 7 ------------------------------------------------