BEHLEN OBSERVATORY RESULTS FOR NGC 7469 C. Martin Gaskell & Stephanie A. Snedden Dept. of Physics and Astronomy University of Nebraska Lincoln, NE 68588-0111 Date Time H.J.D. Aper. See Fil Cmp-Chk err Cmp-AGN err (UT) (UT) (") (FWHM) (mag.) (mag.) (mag.) (mag.) 6/27 8:50:38 261.9 13.7 2.1 V 1.850 0.015 0.212 0.016 7/09 8:09:38 273.8 13.7 3.4 V 1.844 0.024 0.150 0.024 7/13 7:00:02 277.8 13.7 3.2 V 1.844 0.010 0.164 0.012 7/18 8:06:20 282.8 13.7 2.7 V 1.846 0.011 0.180 0.011 7/25 6:30:25 289.8 13.7 3.4 V 1.845 0.010 0.144 0.011 Notes: 1) Julian day numbers are all - 2450000. 2) The aperture in each case was circular with a diameter of 13.7 arcsec. 3) Seeing is the average of the FWHM of the comparison and check star images. 4) The Comparison star is identified as Guide Star Catalog 1160 784. The check star is Guide Star Catalog 1160 585. 5) The 7th and 8th column give results for the Check - Comparison stars. 6) The results for NGC 7469 are presented in columns 9 and 10 as Comparison star - NGC 7469. All data were taken with the Behlen Observatory 0.8 m telescope. The CCD scale is 0.456 arcsec/pix. The field is 3.0 arcmin by 4.4 arcmin. ------------------------------------------------------------------- Observations from Calar Alto Observatory 1.23-m Telescope, Tek CCD 1030 x 1080, 24 micron pixel size, aperture 15 x 15 arcsec R-band measurements given as instrumental magnitudes, the errors were estimated from the brightness deviations of the stars which have been used for calibration. Seeing Airmass UT start JD start (arcsec) R (instrumental mag) Jul 25 96 22:51 2450290.4520 3.5 1.894 -0.131 +/- 0.014 Jul 26 96 23:06 2450291.4625 5.5 1.704 -0.165 +/- 0.014 Jul 27 96 23:14 2450292.4681 2.4 1.633 -0.155 +/- 0.014 Jul 28 96 03:41 2450292.6535 1.9 1.206 -0.152 +/- 0.014 Jul 28 96 22:46 2450293.4486 1.8 1.821 -0.150 +/- 0.014 Jul 28 96 23:52 2450293.4944 1.7 1.406 -0.135 +/- 0.014 Jul 29 96 02:49 2450293.6174 2.0 1.142 -0.154 +/- 0.014 Jul 29 96 03:53 2450293.6618 1.8 1.218 -0.154 +/- 0.014 Jul 30 96 01:34 2450294.5653 1.8 1.022 -0.161 +/- 0.014 Jul 30 96 02:38 2450294.6097 2.2 1.132 -0.166 +/- 0.014 Jul 30 96 03:37 2460294.6507 2.4 1.196 -0.172 +/- 0.014 Jul 31 96 01:16 2460295.5528 1.5 1.172 -0.187 +/- 0.014 Jul 31 96 02:23 2460295.5993 1.6 1.136 -0.173 +/- 0.014 Jul 31 96 03:33 2460295.6479 1.3 1.195 -0.148 +/- 0.014 Aug 04 96 02:45 2460299.6146 2.3 1.096 -0.170 +/- 0.014 Aug 04 96 03:46 2460299.6569 1.8 1.254 -0.172 +/- 0.014 Aug 04 96 04:09 2460299.6729 1.8 1.316 -0.164 +/- 0.014 Aug 05 96 00:21 2460300.5146 2.0 1.231 -0.181 +/- 0.014 Aug 05 96 02:13 2460300.5924 1.6 1.056 -0.187 +/- 0.014 Aug 05 96 03:13 2460300.6340 1.9 1.079 -0.188 +/- 0.014 Aug 06 96 01:00 2460301.5417 1.9 1.163 -0.161 +/- 0.014 Aug 06 96 02:07 2460301.5882 2.0 1.049 -0.154 +/- 0.014 Aug 06 96 03:07 2460301.6299 1.7 1.192 -0.199 +/- 0.014 Aug 06 96 04:21 2460301.6813 2.1 1.339 -0.177 +/- 0.014 Aug 07 96 00:37 2460302.5257 1.9 1.186 -0.162 +/- 0.014 Aug 07 96 01:43 2460302.5715 1.5 1.136 -0.157 +/- 0.014 Aug 07 96 02:46 2460302.6153 1.9 1.168 -0.150 +/- 0.014 Aug 07 96 03:46 2460302.6569 2.1 1.283 -0.162 +/- 0.014 Aug 07 96 23:46 2460303.4903 4.1 1.284 -0.146 +/- 0.014 Aug 08 96 04:20 2460303.6806 2.5 1.336 -0.143 +/- 0.014 Aug 08 96 23:07 2460304.4632 2.4 1.394 -0.167 +/- 0.014 Aug 09 96 00:15 2460304.5104 1.7 1.067 -0.173 +/- 0.014 Aug 09 96 01:32 2460304.5639 1.6 1.025 -0.169 +/- 0.014 Aug 09 96 02:35 2460304.6076 1.5 1.165 -0.165 +/- 0.014 Aug 09 96 23:03 2460305.4604 1.5 1.413 -0.176 +/- 0.014 Aug 10 96 00:20 2460305.5139 1.4 1.213 -0.173 +/- 0.014 Aug 10 96 01:36 2460305.5667 1.3 1.138 -0.173 +/- 0.014 Aug 10 96 01:44 2460305.5722 1.3 1.036 -0.172 +/- 0.014 Aug 10 96 02:36 2460305.6083 1.2 1.160 -0.173 +/- 0.014 Aug 11 96 00:08 2460306.5056 2.2 1.210 -0.169 +/- 0.014 Aug 11 96 01:30 2460306.5625 2.0 1.136 -0.175 +/- 0.014 Aug 11 96 02:33 2460306.6063 1.8 1.172 -0.172 +/- 0.014 Aug 11 96 03:33 2460306.6479 1.8 1.292 -0.177 +/- 0.014 Aug 11 96 23:50 2460307.4931 2.4 1.238 -0.173 +/- 0.014 Aug 12 96 00:53 2460307.5368 2.3 1.149 -0.171 +/- 0.014 Aug 12 96 02:37 2460307.6090 1.5 1.168 -0.181 +/- 0.014 Aug 12 96 03:37 2460307.6507 2.9 1.308 -0.193 +/- 0.014 Aug 12 96 22:48 2460308.4500 2.5 1.424 -0.183 +/- 0.014 Aug 12 96 23:56 2460308.4972 1.8 1.155 -0.183 +/- 0.014 Aug 13 96 01:08 2460308.5472 1.5 1.005 -0.185 +/- 0.014 Aug 13 96 02:16 2460308.5944 1.4 1.162 -0.191 +/- 0.014 Observers: Holger Bock, Daniel Tschoeke, and Matthias Dietrich. Supported by grant Sonderforschungsbereich 328. ----------------------------------------------------------- V-band Photometry of NGC 7469 from Loiano Observatory Differential photometry in the Johnson-V filter for NGC_7469 nucleus, respect to the 12.7 mag star 4 arcmin away at WEST (star #4 in Penston et al. 1971, PASP 83). We adopt for the nucleus itself an aperture of 9 arcsec because of the presence of an object only 13 sec NORTH EAST away from the NGC7469 nucleus. All the photometry has been performed with APPHOT, the Aperture Photometry Package in IRAF. The photmetric errors on single magnitude measurements are 0.011 (estimated from magnitude r.m.s of field stars). So the error associated at the following differential magnitude (delta_mag in the bottom table) should be assumed of 0.015 mag DATE-OBS UT geocentric JD Delta_mag (NGC7469-star#4) 19:07:96 00:07:19 2450283.50682 0.487 +/- 0.015 21:07:96 02:31:03 2450285.60663 0.550 +/- 0.015 22:07:96 02:17:39 2450286.59733 0.542 +/- 0.015 24:07:96 02:29:58 2450288.60519 0.532 +/- 0.015 26:07:96 01:52:44 2450290.57968 0.491 +/- 0.015 30:07:96 01:41:50 2450294.57211 0.477 +/- 0.015 01:08:96 01:37:09 2450296.56885 0.468 +/- 0.015 08:08:96 01:20:05 2450303.55700 0.467 +/- 0.015 13:08:96 01:52:48 2450308.57972 0.436 +/- 0.015 13:08:96 22:27:33 2450309.43649 0.429 +/- 0.015 13:08:96 22:39:37 2450309.44487 0.443 +/- 0.015 17:08:96 01:29:18 2450312.56340 0.390 +/- 0.015 24:08:96 02:19:11 2450319.59804 0.413 +/- 0.015 26:08:96 02:29:56 2450321.60481 0.381 +/- 0.015 26:08:96 02:35:59 2450321.60902 0.379 +/- 0.015 Observers: M. Mignoli (Marco) G.M. Stirpe (Giovanna) A. Comastri (Andrea) Osservatorio Astronomico di Bologna, via Zamboni 33, I-40126, Bologna, Italy.