COMMISSION 27 OF THE I. A. U. INFORMATION BULLETIN ON VARIABLE STARS Number 3078 Konkoly Observatory Budapest 27 August 1987 HU ISSN 0374 - 0676 PHOTOELECTRIC MINIMA OF ECLIPSING BINARIES The following table gives photoelectric minima obtained during the years 1985/86 at the Ege University Observatory, Izmir (Turkey) and the Nurnberg Observatory (Germany). Minima of eclipsing binaries observed at both observatories 1960-1984 were published in Astr. Nachr. 288, 69 (1964); 289, 191 (1966); 291, 111 (1968); I.B.V.S. No. 456 (1970), 530 (1971), 647 (1972), 937 (1974), 1053 (1975), 1163 (1976), 1358 (1977), 1449 (1978), 1924 (1981), 2189 (1982), 2385 (1983) and 2793 (1985). The table gives the heliocentric minima, three different O-C's, the type of filter, UBV, the abbreviations of the names of the observers and the type of the instruments used (Izmir: 48 cm Cassegrain, Nurnberg: 34 cm Cassegrain, both with phototube 1P21. Abbreviations of the observer's names: Be = F. Betten Sn = S. Evren Ca = M. C. Akan Sk = S. Skaberna Gd = N. Gudur Sr = C. Sezer Gl = O. Gulmen Tj = T. Eker Gr = R. Grobel Tm = O. Tumer Ha = T. Hartlieb Tn = Z. Tunca Hs = H. Kara Va = V. Keskin Ib = C. Ibanoglu Wu = E. Wunder Ls = G. Lichtschlag Zk = Z. Eker Sl = S. Congar Remarks: O-C (I):GCVS, Moscow 1985 or 1969/70 or Supplements to the Third Edition of the GCVS. Moscow 1971, 1974 and 1976. O-C (II): SAC 58, Krakow 1986. O-C (III): AO Cam: 2445745.6396 + 0.329921d. E (E. Evans, D. H. Grossoehme, E. J. Mayer Jr., IBVS 2497, 1984) V367 Cyg: 2434266.337 +18.59773.E (M. C. Akan, Astrophys. Space Sci., 1987 (in press). UZ Dra: 2446227.4238+3.2613024.E (O. Gulmen, N. Gudur, C. Sezer, IBVS 2953, 1986) AK Her: 2422977.25905+0.42152207.E+0.0189sin [2piE-32541/65609] (Z. Tunca, V. Keskin, M.C. Akan, S. Evren, C. Ibanoglu, Astrophys. Space Sci., 1987 (in press). SW Lac: 2442697.4018+0.320719765.E (S. Evren, M.C. Akan, C. Ibanoglu, IBVS 2781, 1985) AT Peg: 2445615.2541+1.1460766.E (N. Gudur, C. Sezer, O. Gulmen, IBVS 2978, 1987) SAO 077615: 2441 329.510+0.3464551.E (Th. Berthold, Mitteilungen der Bruno H. Burgel Sternwarte, Hartha, Heft 16, Februar 1981) V471 Tau: 2440610.06614+0.52118301.E (S. Evren, C. Ibanoglu, Z. Tunca, O. Tumer, Astrophys. Space Sci. 120,97, 1986) ER Vul: 2440182.2621+0.69809409.E (C. Ibanoglu, M. C. Akan, S. Evren, IBVS 2782, 1985) The (O-C)'s for secondary minima (Min II) were calculated on the supposition, that they are symmetric between primary minima (if no special data are given). The sign = between O-C (I) and O-C (II) indicates that the elements (I) and (II) are equal. The sign: means that the time of minimum (last decimal) is uncertain. E. POHL M.C. AKAN, C. IBANOGLU, C. SEZER, N. GUDUR Nurnberg Observatory Ege University Observatory Regiomontanusweg 1 Bornova/Izmir 8500 Nurnberg 20, F.R.G. Turkey Table Star Min. hel, O-C (I) O-C (II) O-C (III) Filt. Observer Instr. Rem. 244 RT And 6298.4807 -0.0014 -0.0037 Y Ls 34 AB And 6321.4033 +0.0004 -0.0018 V Be/Ls 34 Min II BX And 6348.5782 -0.0059 = -0.0059 B, V Sr/Sl 48 6359.5598 -0.0064 = -0.0064 B, V Ca/Va 48 6366.577 -0.005 = -0.005 B, V Ca 48 Min II CN And 6289.4649 -0.0200 -0.0043 V Be/Ls 34 6712.45818 -0.0221 -0.0055 B Sn/Ca 48 6712.45936 -0.0209 -0.0043 V Sn/Ca 48 6714.30980 -0.0217 -0.0050 B Ib/Sn/Ca 48 6714.31035 -0.0211 -0.0045 V Ib/Sn/Ca 48 6760.35708 -0.0226 -0.0058 V Tn/Ca 48 Min II 6760.35743 -0.0223 -0.0055 B Tn/Ca 48 Min II 6762.20995 -0.0209 -0.0041 B Ib 48 Min II 6762.21113 -0.0197 -0.0030 U Ib 48 Min II 6762.43905 -0.0232 -0.0064 B Ib 48 6762.43926 -0.0230 -0.0062 V Ib 48 6764.2908 -0.0226 -0.0059 V Ls/Wu 34 OO Aql 6705.3655 -0.0018 -0.0141 V Ls 34 Min II SS Ari 6327.4994 -0.0515 -0.0117 V Be 34 Min II TZ Boo 6197.4061 -0.0414 = -0.0414 V Gr/Ls 34 6212.4130 -0.0412 = -0.0412 U Gr/Be 34 Min II 6610.4528: -0.0499: = -0.0499: V Be/Ls/Wu 34 i Boo 6573.4836: +0.0194: +0.0162: V Ls/Sk 34 Min II SV Cam 6334.5271 +0.0128 +0.0028 U Be 34 Star Min.hel. O-C (I) O-C (II) O-C (III) Filt. Observer Instr. Rem. 244 AO Cam 6100.2871 -0.0558 -0.0176 V Gr/Ha 34 6107.3796 -0.0564 -0.0184 B Gr/Ls 34 Min II AW Cam 6474.2849 -0.0042 -0.0044 V Ls 34 VZ CVn 6576.4665 -0.0009 -0.0055 V Ha/Ls 34 VW Cep 6249.4830 -0.0209 -0.0126 B, V Sr 48 6257.4172 -0.0187 -0.0104 B, V Gl 48 Min II 6276.4780 -0.0225 -0.0142 B, V Sr/Ca 48 EG Cep 6232.4628 +0.0065 +0.0080 V Gr/Ls 34 GK Cep 6287.4712 +0.0635 +0.0026 B, V Gl/Sl 48 Min II 6311.3413 +0.0616 +0.0004 B, V Gl/Sl 48 6318.3644 +0.0636 +0.0022 B, V Sr/Tj 48 Min II 6325.3847 +0.0627 +0.0013 B, V Sr 48 6332.4057 +0.0625 +0.0010 B, V Sr 48 Min II 6339.4287 +0.0643 +0.0028 B, V Sr 48 6691.4264 +0.0670 +0.0017 B, V Sr/Hs 48 Y Cyg 6287.4210: -0.0149: -0.0168: V Ls 34 V367 Cyg 5834.099 -0.125 +0.010 -0.026 B, V Ca 48 5936.572 +0.060 +0.198 +0.159 B, U Ca 48 Min II 6224.695 -0.082 +0.065 +0.018 B, V Ca 48 6271.385 +0.114 +0.262 +0.213 B, V Ca 48 Min II 6764.000 -0.111 +0.051 -0.012 B, V Ca 48 V909 Cyg 6320.324 -0.010 = -0.010 B, V Gl 48 Min II 6327.3377 -0.0100 = -0.0100 B, V Gd/Ca 48 V1073 Cyg 6291.4714: -0.0200: 0.0000: U Be/Ls 34 Star Min. hel. O-C (I) O-C (II) O-C (III) Filt. Observer Instr. Rem. 244 V1425 Cyg 6613.4158 +0.0061 = +0.0061 B, V Sr/Zk 48 Min II 6665.3883 +0.0045 = +0.0045 B, U Gd/Zk 48 6685.4260 +0.0040 = +0.0040 B, V Sr/Zk 48 6690.4358 +0.0043 = +0.0043 B, V Gd/Zk 48 UZ Dra 6227.4238 +0.0010 +0.0026 0.0000 B, V Gd 48 6245.3608 +0.0008 +0.0004 -0.0002 B Gl/Ca 48 Min II 6245.3601 +0.0001 -0.0003 -0.0009 U Gl/Ca 48 Min II AK Her 6224.4309 +0.0008 -0.0081 +0.0033 B, V Gl/Ca 48 Min II 6228.4330 -0.0016 -0.0104 +0.0009 B, V Sr 48 6230.332 +0.001 -0.008 +0.0031 B, V Gl/Ca 48 Min II 6234.334 -0.002 -0.011 +0.0006 B, V Sr/Ca 48 6243.3987 +0.0001 -0.0088 +0.0026 B, V Sr 48 Min II 6244.4510 -0.0014 -0.0103 +0.0011 B, V Gd/Ca 48 6612.4410 -0.0001 -0.0100 +0.0033 B, V Gd/Zk 48 6634.3582 -0.0020 -0.0120 +0.0014 B, V Ca/Va 48 6642.3659 -0.0033 -0.0132 +0.0002 B, V Ib/Ca 48 6643.4213 -0.0017 -0.0116 +0.0018 B, V Ib/Sn/Ca 48 Min II HS Her 6596.4600 -0.0045 -0.0163 V Be/Ls/Wu 34 RT Lac 6253.4651 -0.0140 -0.0300 B Ib 48 6253.4665 -0.0126 -0.0286 V Ib 48 6281.3828 -0.0030 -0.0193 B, V Sn/Ca/Va 48 Min II 6286.4422 -0.0176 -0.0339 B Ib/Ca 48 Min II 6286.4429 -0.0169 -0.0332 V Ib/Ca 48 Min II 6664.4484 -0.0206 -0.0408 U Sn/Ca 48 6664.4505 -0.0185 -0.0387 B Sn/Ca 48 Star Min.hel. O-C (I) O-C (II) O-C (III) Filt. Observer Instr. Rem. 294 SW Lac 6262.3633 -0.0030 +0.0063 +0.0010 V Ca 48 Min II 6262.3636 -0.0027 +0.0066 +0.0013 B Ca 48 Min II 6264.4467 -0.0043 +0.0050 -0.0003 V Ca 48 6264.4470 -0.0040 +0.0053 0.0000 B Ca 48 6270.3797 -0.0046 +0.0048 -0.0006 B, V Sn/Ca 48 Min II 6270.5404 -0.0043 +0.0051 -0.0003 B Sn/Ca 48 6270.5408 -0.0039 +0.0055 +0.0001 V Sn/Ca 48 6271.5028 -0.0090 +0.0053 -0.0001 B Ca 48 6271.5030 -0.0038 +0.0055 +0.0001 V Ca 48 6272.4655 -0.0035 +0.0059 +0.0005 V Sn/Ca 48 6272.4656 -0.0034 +0.0060 +0.0006 B Sn/Ca 48 6273.4268 -0.0043 +0.0050 -0.0004 V Ib 48 6273.4271 -0.0040 +0.0053 -0.0001 B Ib 48 6274.3887 -0.0046 +0.0048 -0.0006 B Ca 48 6274.3891 -0.0042 +0.0052 -0.0002 V Ca 48 6288.5007 -0.0043 +0.0051 -0.0003 V Ls 34 6329.3932 -0.0037 +0.0060 +0.0004 B Tn/Ca 48 Min II 6329.3938 -0.0031 +0.0066 +0.0010 V Tn/Ca 48 Min II 6329.5541 -0.0032 +0.0066 +0.0010 B, V Tn/Ca 48 6669.3555 -0.0056 +0.0066 -0.0002 V Tn/Va 48 Min II 6669.3565 -0.0046 +0.0076 +0.0008 B Tn/Va 48 Min II 6669.5154 -0.0061 +0.0062 -0.0007 B Tn/Va 48 6669.5156 -0.0059 +0.0064 -0.0005 V Tn/Va 48 6689.3995 -0.0066 +0.0057 -0.0012 V Ib/Ca 48 6689.3999 -0.0062 +0.0061 -0.0008 B Ib/Ca 48 Star Min. hel. O-C(I) O-C (II) O-C (III) Filt. Observer Instr. Rem. 244 SW Lac 6689.5613 -0.0052 +0.0071 +0.0002 B Ib/Ca 48 Min II 6689.5616 -0.0049 +0.0074 +0.0005 V Ib/Ca 48 Min II 6693.4089 -0.0063 +0.0061 -0.0008 V Be 34 Min II XY Leo 6469.408 +0.002 = +0.002 U Be/Ls 34 U Oph 6219.5383 +0.0048 -0.0002 V Gr/Ha 34 AT Peg 6000.3358 +0.0169 +0.0166 0.0000 B, V Gd 48 6298.3155 +0.0152 +0.0246 -0.0003 B, V Gd/Ca 48 6315.5062 +0.0147 +0.0246 -0.0007 B, V Gd/Ca 48 6334.419 +0.017 +0.027 +0.002 B, V Gl 48 Min II UV Psc 5987.5127 +0.0045 -0.0018 B Ib 48 Min II 5987.5134 +0.0052 -0.0011 V Ib 48 Min II 6004.3008 +0.0021 -0.0041 B Ib/Ca 48 6004.3015 +0.0028 -0.0034 V Ib/Ca 48 6322.4592 +0.0037 -0.0030 B, V Tm/Ca 48 Min II 6326.3344 +0.0042 -0.0025 B, V Ib/Tj 48 6331.5002 +0.0037 -0.0030 V Ca/Tj 48 6331.5005 +0.0040 -0.0027 B Ca/Tj 48 6745.2357 +0.0061 -0.0012 V Ib/Ca 48 Min II 6745.2377 +0.0081 +0.0008 B Ib/Ca 48 Min II 6753.4130 +0.0034 -0.0039 B, U Sn/Ca 48 SAO 077615 6113.4117 +0.0497 V Gr/Ls 34 6115.309 +0.041 V Ls 34 Min II V471 Tau 5935.51417 -0.00285 +0.00003 B Sn/Ca 48 5936.55676 -0.00262 +0.00026 B Tn 4R Star Min. hel. O-C (I) O-C (II) O-C (III) Filt. Observer Instr. Rem. 244 V471 Tau 6019.42479 -0.00275 +0.00019 B Sn/Ca 48 6030.36958 -0.00282 +0.00014 B Ca 48 6351.41848 -0.00289 +0.00030 B Sn/Ca 48 6352.46093 -0.00281 +0.00039 B Sn/Ca 48 DR Vul 6319.5047 +0.0513 +0.0514 V Be/Ls 34 ER Vul 6004.3776 -0.0090 +0.0033 +0.0108 B Ib/Ca 48 6004.3808 -0.0058 +0.0065 +0.0140 V Ib/Ca 48 6235.4368 -0.0196 -0.0070 +0.0008 B Tn/Ca 48 6235.4406 -0.0158 -0.0032 +0.0046 V Tn/Ca 48 6241.3712 -0.0190 -0.0064 +0.0014 V Sn/Ca 48 Min II 6241.3738 -0.0164 -0.0038 +0.0040 B Sn/Ca 48 Min II 6248.3513 -0.0199 -0.0073 +0.0006 V Ca 48 Min II 6248.3577 -0.0135 -0.0009 +0.0070 B Ca 48 Min II 6256.3774 -0.0219 -0.0092 -0.0014 B Sn/Ca 48 6256.3806 -0.0187 -0.0060 +0.0018 V Sn/Ca 48 6314.3250 -0.0163 -0.0035 +0.0044 V Ib 48 6314.3256 -0.0157 -0.0029 +0.0050 B Ib 48 6317.4666 -0.0161 -0.0034 +0.0046 B Ca 48 Min II 6317.4688 -0.0139 -0.0012 +0.0068 V Ca 48 Min II 6605.4301 -0.0172 -0.0040 +0.0043 B, V Tn/Sn 48 6651.5042 -0.0174 -0.0042 +0.0042 B Ib/Sn 48 6651.5047 -0.0169 -0.0037 +0.0047 V Ib/Sn 48 6652.5521 -0.0167 -0.0035 +0.0049 V Ib/Ca 48 Min II 6652.5523 -0.0165 -0.0033 +0.0051 B Ib/Ca 48 Min II