# IBVS 2777-t1.txt #IAU COMMISSION 27 UNPUBLISHED DATA FILE 183 #IBVSdataKey: photometry #Comment: OCR-ed/RETYPED FROM PAPER SOURCE - MIGHT CONTAIN ERRORS! #Comment: on certain pages of the original hand-written sheets the #Comment: last character column were not always readable #Author: E. S. Guinan and S. W. Wacker #Object: lambda And IAU COMMISSION 27 UNPUBLISHED DATA FILE 183 6 pages, including cover sheet October, 1985 INTERMEDIATE AND NARROW-BAND DATA OF LAMBDA ANDROMEDAE The data were obtained on 32 nights, from 1984 August 22 (UT) through 1985 February 20 (UT) with the 38-cm Cassegrain telescope of the Villanova University Observatory. A description of the filter set, along with a brief discussion of the results, has been sent to the IBVS. E. S. Guinan and S. W. Wacker Dept. of Astronomy and Astrophysics Villanova University Villanova, PA 19085 U.S.A. Lambda Andromedae 1984/85 photometric data Nightly mean differential magnitudes Date HJD = Delta mag (V-C) UT 244500+ lambda4530 lambda5500 lambda6600 lambda6569 22 Aug 934.724 -1.299 -1.176 -1.163 -1.207 +/-0.09 +/-0.006 +/-0.011 +/-0.014 25 Aug 937.728 -1.223 -1.130 -1.122 -1.143 +/-0.009 +/-0.004 +/-0.003 +/-0.005 26 Aug 938.745 -1.235 -1.144 -1.143 -1.172 +/-0.007 +/-0.002 +/-0.004 +/-0.012 27 Aug 939.820 -1.239 -1.154 -1.149 -1.169 +/-0.007 +/-0.006 +/-0.003 +/-0.004 01 Sep 944.737 -1.281 -1.183 -1.173 -1.180 +/-0.009 +/-0.018 +/-0.014 +/-0.004 06 Sep 949.654 -1.246 -1.153 -1.139 -1.150 +/-0.004 +/-0.002 +/-0.003 +/-0.018 07 Sep 950.747 -1.255 -1.154 -1.144 -1.179 +/-0.006 +/-0.003 +/-0.003 +/-0.004 08 Sep 951.819 -1.252 -1.147 -1.137 -1.162 +/-0.005 +/-0.002 +/-0.004 +/-0.006 10 Sep 953.632 -1.239 -1.130 -1.129 -1.123 +/-0.011 +/-0.005 +/-0.010 +/-0.011 16 Sep 959.619 -1.240 -1.127 -1.123 -1.156 +/-0.007 +/-0.006 +/-0.003 +/-0.007 17 Sep 960.611 -1.243 -1.127 -1.119 -1.138 +/-0.015 +/-0.006 +/-0.004 +/-0.004 19 Sep 962.747 -1.222 -1.118 -1.118 -1.134 +/-0.008 +/-0.004 +/-0.005 +/-0.00 21 Sep 964.714 -1.228 -1.124 -1.108 -1.135 +/-0.009 +/-0.009 +/-0.007 +/-0.00 27 Sep 970.670 -1.231 -1.127 -1.110 -1.156 +/-0.011 +/-0.008 +/-0.002 +/-0.015 03 Oct 976.641 -1.200 -1.104 -1.105 -1.134 +/-0.004 +/-0.004 +/-0.005 +/-0.004 04 Oct 977.717 -1.200 -1.104 -1.101 -1.124 +/-0.009 +/-0.006 +/-0.008 +/-0.008 Date HJD = Delta mag (V-C) UT 244600+ lambda4530 lambda5500 lambda6600 lambda6569 08 Nov 012.591 -1.223 -1.115 -1.115 -1.140 +/-0.010 +/-0.006 +/-0.009 +/-0.011 14 Nov 018.591 -1.226 -1.111 -1.112 -1.145 +/-0.004 +/-0.005 +/-0.003 +/-0.009 15 Nov 019.590 -1.228 -1.124 -1.117 -1.143 +/-0.003 +/-0.003 +/-0.003 +/-0.004 21 Nov 025.595 -1.230 -1.126 -1.121 -1.148 +/-0.004 +/-0.003 +/-0.004 +/-0.005 26 Nov 030.548 -1.216 -1.118 -1.121 -1.137 +/-0.004 +/-0.003 +/-0.005 +/-0.008 02 Dec 036.591 -1.246 -1.141 -1.136 -1.177 +/-0.005 +/-0.005 +/-0.006 +/-0.018 18 Dec 052.506 -1.334 -1.216 -1.190 +/-0.002 +/-0.006 +/-0.004 23 Dec 057.562 -1.330 -1.194 +/-0.005 +/-0.005 24 Dec 058.501 -1.313 -1.197 -1.184 +/-0.010 +/-0.001 +/-0.009 09 Jan 075.475 -1.236 -1.134 -1.117 +/-0.011 +/-0.003 +/-0.005 13 Jan 079.485 -1.227 -1.130 -1.117 -1.087 +/-0.003 +/-0.006 +/-0.008 +/-0.019 27 Jan 092.555 -1.289 -1.163 -1.166 +/-0.001 +/-0.007 +/-0.001 30 Jan 095.511 -1.278 -1.161 +/-0.005 +/-0.008 04 Feb 101.486 -1.298 -1.173 +/-0.009 +/-0.005 20 Feb 117.495 -1.272 -1.148 +/-0.005 +/-0.009 Lambda Andromedae 1984/85 photometric data Nightly mean differential colour and alpha indices Date HJD = Delta(b-y)_{V-C} Delta(b-r)_{V-C} Delta alpha(V-C) UT 244500+ 22 Aug 934.724 -0.123+/-0.011 -0.136+/-0.014 -0.035+/-0.01 25 Aug 937.728 -0.093+/-0.100 -0.101+/-0.009 -0.017+/-0.00 26 Aug 938.745 -0.091+/-0.007 -0.092+/-0.008 -0.023+/-0.01 27 Aug 939.820 -0.085+/-0.009 -0.090+/-0.008 -0.016+/-0.00 01 Sep 944.737 -0.098+/-0.020 -0.108+/-0.017 -0.006+/-0.01 06 Sep 949.654 -0.093+/-0.004 -0.107+/-0.005 -0.009+/-0.01 07 Sep 950.747 -0.101+/-0.007 -0.111+/-0.007 -0.028+/-0.00 08 Sep 951.819 -0.105+/-0.005 -0.115+/-0.006 -0.020+/-0.00 10 Sep 953.632 -0.109+/-0.012 -0.110+/-0.015 +0.005+/-0.01 16 Sep 959.619 -0.113+/-0.009 -0.117+/-0.008 -0.026+/-0.00 17 Sep 960.611 -0.116+/-0.016 -0.124+/-0.016 -0.015+/-0.00 19 Sep 962.747 -0.104+/-0.008 -0.104+/-0.009 -0.013+/-0.00 21 Sep 964.714 -0.104+/-0.013 -0.120+/-0.011 -0.021+/-0.01 27 Sep 970.670 -0.104+/-0.014 -0.121+/-0.011 -0.036+/-0.01 03 Oct 976.641 -0.096+/-0.006 -0.095+/-0.006 -0.023+/-0.00 04 Oct 977.717 -0.096+/-0.011 -0.099+/-0.012 -0.018+/-0.01 Date HJD = Delta(b-y)_{V-C} Delta(b-r)_{V-C} Delta alpha(V-C) UT 244600+ 08 Nov 012.591 -0.108+/-0.012 -0.108+/-0.013 -0.020+/-0.01 14 Nov 018.591 -0.115+/-0.006 -0.114+/-0.005 -0.026+/-0.00 15 Nov 019.590 -0.104+/-0.004 -0.111+/-0.004 -0.021+/-0.00 21 Nov 025.595 -0.104+/-0.005 -0.109+/-0.006 -0.021+/-0.00 26 Nov 030.548 -0.098+/-0.005 -0.095+/-0.006 -0.013+/-0.00 02 Dec 036.591 -0.105+/-0.006 -0.110+/-0.008 -0.032+/-0.01 18 Dec 052.506 -0.118+/-0.006 -0.144+/-0.004 23 Dec 057.562 -0.136+/-0.007 24 Dec 058.501 -0.116+/-0.010 -0.129+/-0.013 09 Jan 075.475 -0.102+/-0.011 -0.119+/-0.012 13 Jan 079.485 -0.097+/-0.007 -0.110+/-0.009 +0.024+/-0.02 27 Jan 092.555 -0.126+/-0.007 -0.002+/-0.00 30 Jan 095.511 -0.117+/-0.009 04 Feb 101.486 -0.125+/-0.010 20 Feb 117.495 -0.124+/-0.010