THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS 25 Birch Street, Cambridge, MA 02138 USA Tel. 617-354-0484 Fax 617-354-0665 http://www.aavso.org * * * AAVSO NEWS FLASH * * * Subject: 2138+43 SS CYG - NOTE OF THANKS No. 670 0106+34 FN AND 1848+26 CY LYR September 11, 2000 0547-05 CN ORI 1944+36A V811 CYG 0611+15 CZ ORI 2328+48 Z AND 1701-32 FQ SCO ---------------------------------------------------------------------------- 2138+43 SS CYGNI - THANKS TO OUR OBSERVERS! Thanks to the very dedicated efforts of our observers from around the world we were able to obtain excellent coverage of the beginning of SS Cyg's outburst this weekend. We were able to inform our colleagues of the development of this outburst throughout the weekend, and are happy to inform you that, thanks to your observations, Chandra is now scheduled to observe SS Cyg in outburst (for the first time) from SEP 12.7 to Sep 14.5 UT. EUVE will also be observing SS Cyg during this time to provide extreme ultra-violet coverage. RXTE will possibly observe during this window to provide additional coverage in support of the Chandra observations. These satellite observations are all possible because of the dedication of AAVSO observers. We ask that you continue to observe the star throughout the current outburst so that the x-ray and EUV data can be correlated with thorough optical coverage. On behalf of our colleagues and all of us at HQ, our sincere thanks to all of those observers who participated in the "SS Cyg vigil" this weekend! AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials SEP 09.0451 11.5 WSV SEP 10.1424 10.6 GSR SEP 09.0625 11.6 WWJ SEP 10.1458 10.5 CWO SEP 09.10 11.9 VET SEP 10.156 10.6 SPK SEP 09.12 11.6 GGX SEP 10.1569 10.42 CCDV PCH SEP 09.1208 11.8 BVE SEP 10.161 10.7 OCN SEP 09.142 11.8 SPK SEP 10.1625 10.5 SXN SEP 09.1458 11.7 BTH SEP 10.1840 10.3 KB SEP 09.1757 11.8 KB SEP 10.197 10.3 OCN SEP 09.2208 11.4 RR SEP 10.229 10.35 CCDV OCN SEP 09.2486 11.6 BTH SEP 10.2354 10.2 BTH SEP 09.2618 11.6 CKN SEP 10.243 10.30 CCDV OCN SEP 09.2666 11.5 LMK SEP 10.259 10.24 CCDV OCN SEP 09.4757 11.2 CKN SEP 10.277 10.18 CCDV OCN SEP 09.7694 11.2 NHK SEP 10.2813 10.2 RR SEP 09.798 11.5 KTO SEP 10.297 10.11 CCDV OCN SEP 09.818 11.7 KTO SEP 10.313 10.08 CCDV OCN SEP 09.82 11.2 FMC SEP 10.330 10.02 CCDV OCN SEP 09.839 11.3 KTO SEP 10.3403 10.1 CKN SEP 09.8400 11.02 CCDV SLQ SEP 10.349 9.98 CCDV OCN SEP 09.8420 11.03 CCDV SLQ SEP 10.364 9.96 CCDV OCN SEP 09.8438 11.0 GOT SEP 10.380 9.95 CCDV OCN SEP 09.8440 11.0 GOT SEP 10.3847 9.8 BTH SEP 09.847 11.2 KTO SEP 10.4944 9.7 LMK SEP 09.8611 11.2 DPV SEP 10.5375 9.5 LMK SEP 09.865 11.5 KTO SEP 10.7924 8.9 FSE SEP 09.90 11.2 GGX SEP 10.8056 8.9 FSE SEP 09.9000 11.1 CCDV FMQ SEP 10.81 8.6 VET SEP 09.904 11.2 KTO SEP 10.82 8.9 FMC SEP 09.9104 11.6 GMY SEP 10.8240 9.1 GRL SEP 09.912 10.9 BMU SEP 10.8330 9.0 HHU SEP 09.919 11.3 KTO SEP 10.8340 8.8 FSE SEP 09.974 11.1 KTO SEP 10.8410 8.6 SCZ SEP 09.976 11.4 SPK SEP 10.8542 9.3 SMI SEP 09.997 11.2 KTO SEP 10.861 9.0 RMQ SEP 10.017 11.0 OCN SEP 10.8715 8.9 DPV SEP 10.035 10.9 OCN SEP 10.876 8.9 MUY SEP 10.0507 10.8 MDP SEP 10.896 8.7 BMU SEP 10.059 10.9 OCN SEP 10.91 8.7 GGX SEP 10.0625 10.9 WSV SEP 10.9222 9.3 JCN SEP 10.067 10.9 KTO SEP 10.9430 8.99 CCDV SLQ SEP 10.0708 11.1 KMA SEP 10.9450 8.99 CCDV SLQ SEP 10.072 11.1 MGH SEP 10.945 8.8 SPK SEP 10.0722 10.7 CGF SEP 11.0097 8.6 MHI SEP 10.0764 10.7 MDP SEP 11.0208 8.8 CGF SEP 10.0785 10.9 RCX SEP 11.0291 9.0 DPL SEP 10.081 10.9 OCN SEP 11.0972 8.7 BTB SEP 10.0840 10.4 RCX SEP 11.10 8.3 VET SEP 10.087 10.6 KTO SEP 11.1060 8.98 CCDV ZRE SEP 10.0938 10.6 SXN SEP 11.1257 9.2 DIL SEP 10.10 10.9 VET SEP 11.1400 8.96 CCDV ZRE SEP 10.110 10.8 OCN SEP 11.1880 8.95 CCDV ZRE SEP 10.1146 10.6 CWO SEP 11.2083 9.0 RR SEP 10.1190 10.7 GRL SEP 11.2326 8.4 KB SEP 10.1236 10.8 MHI SEP 11.2465 8.4 LMK SEP 10.1243 10.8 MGQ SEP 11.7708 8.7 BSR SEP 10.135 10.8 OCN SEP 11.7771 9.0 VFK SEP 10.1389 10.4 BTH ---------------------------------------------------------------------------- 0106+34 FN ANDROMEDAE The dwarf nova type cataclysmic variable FN AND is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials SEP 06.2417 <14.7 SXN SEP 10.083 <13.7 MGH SEP 06.892 <13.7 MUY SEP 10.9799 14.0 JCN SEP 10.0431 <13.7 NHK SEP 11.0403 13.5 DPV ---------------------------------------------------------------------------- 0547-05 CN ORIONIS The dwarf nova type (Z CAM subclass) cataclysmic variable CN ORI is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials SEP 05.690 <13.8 SRX SEP 10.14 12.3 VET SEP 08.11 12.3 VET SEP 11.1042 12.4 DPV SEP 09.14 11.8 VET SEP 11.13 12.3 VET ---------------------------------------------------------------------------- 0611+15 CZ ORIONIS The dwarf nova type cataclysmic variable CZ ORI is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials SEP 05.380 <13.9 SXN SEP 10.1200 12.3 GRL SEP 08.12 12.1 VET SEP 10.13 11.9 VET SEP 09.0451 12.2 NHK SEP 11.1076 12.4 DPV SEP 09.14 11.8 VET SEP 11.12 11.9 VET SEP 10.0514 12.2 NHK ---------------------------------------------------------------------------- 1701-32 FQ SCORPII The dwarf nova type (SS CYG subclass) cataclysmic variable FQ SCO appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials AUG 07.45 <14.2 WPX SEP 10.453 13.4 SRX SEP 10.4423 12.8 WPX SEP 10.462 13.4 SRX ---------------------------------------------------------------------------- 1848+26 CY LYRAE The dwarf nova type cataclysmic variable CY LYR is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials SEP 02.895 <15.2 RMQ SEP 08.0472 13.6 BRJ SEP 05.181 <14.4 SXN SEP 08.2201 13.3 BTH SEP 06.836 <14.0 MUY SEP 09.10 13.5 VET SEP 07.1979 <14.0 SXN SEP 09.2229 13.7 BTH SEP 07.2264 14.0 BTH SEP 09.7917 14.1 NHK SEP 07.77 13.5 KTO SEP 09.84 13.7 VET SEP 07.8042 13.5 NHK SEP 10.2132 <14.0 BTH SEP 07.82 13.5 VET SEP 10.859 13.7 RMQ SEP 07.900 13.9 OJR ---------------------------------------------------------------------------- 1944+36A V811 CYGNI The dwarf nova type (SS CYG subclass) cataclysmic variable V811 CYG is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials SEP 02.899 <15.0 RMQ SEP 09.2326 12.7 BTH SEP 04.848 <14.3 MUY SEP 09.80 13.4 KTO SEP 05.222 <14.3 SXN SEP 10.2201 13.1 BTH SEP 06.856 <14.3 MUY SEP 10.862 13.8 RMQ ---------------------------------------------------------------------------- 2328+48 Z ANDROMEDAE - UPDATE The prototype ZAND type symbiotic star Z AND is in outburst, as indicated by the observations below. According to the AAVSO International Database this star last went into outburst in 1997, when it reached a mean visual magnitude of 9.7 in June and then slowly faded to mean visual magnitude 10.9 by March of 1998. We encourage our CCD observers to carry out multi-color (B and V) observations during this outburst. During Z And's outbursts B-V color decreases (i.e. the system gets bluer) and it would be informative to correlate this color change with the optical light curve. AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials SEP 01.928 10.8 OJR SEP 06.2340 9.8 SXN SEP 02.8197 10.5 BXA SEP 06.8319 9.8 NHK SEP 02.867 10.9 MUY SEP 06.886 9.8 MUY SEP 03.2375 10.3 BVE SEP 07.0652 10.0 DPL SEP 03.923 10.6 OJR SEP 07.07 9.8 BRJ SEP 04.0900 10.4 GRL SEP 07.0771 10.0 MDP SEP 04.8076 10.1 BXA SEP 07.1290 10.1 GMB SEP 04.863 10.1 MUY SEP 07.2514 9.8 KMA SEP 04.957 10.4 RMQ SEP 07.8153 9.7 NHK SEP 04.9900 10.3 GRL SEP 07.924 10.1 OJR SEP 05.0361 10.3 KMA SEP 08.0444 10.0 MDP SEP 05.0631 10.1 DPL SEP 08.07 9.7 BRJ SEP 05.0715 10.3 MDP SEP 08.1000 9.6 DPL SEP 05.302 9.9 SXN SEP 09.7800 9.6 NHK SEP 05.8091 10.0 BXA SEP 09.819 9.9 LTO SEP 05.828 9.7 MUY SEP 09.9836 9.7 BXA SEP 05.955 10.1 OJR SEP 10.0900 9.8 GRL SEP 06.0680 9.6 DPL SEP 10.1799 9.5 SXN SEP 06.0799 10.1 MDP SEP 10.8264 9.6 SCZ SEP 06.08 9.8 BRJ SEP 10.8438 9.5 BSR SEP 06.1639 9.8 KMA SEP 10.8549 9.6 FSE ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: BMU - R. BOUMA, NETHERLANDS LMK - M. LINNOLT, USA BRJ - J. BORTLE, USA LTO - T. LANGE, GERMANY BSR - S. BARONI, ITALY MDP - P. MCDONALD, CANADA BTB - T. BRETL, USA MGH - H. MCGEE, ENGLAND BTH - T. BURROWS, USA MGQ - G. MENALI, USA BVE - E. VAN BALLEGOIJ, NETHERLANDS MHI - H. MENALI, USA BXA - A. BARANSKY, UKRAINE MUY - E. MUYLLAERT, BELGIUM CGF - G. CHAPLE JR., USA NHK - H. NYLANDER, FINLAND CKN - K. CASTLE, USA OCN - S. O'CONNOR, CANADA CWO - W. CASTRO, USA OJR - J. OSORIO, SPAIN DIL - W. DILLON, USA PCH - C. PULLEN, USA DPL - P. DOMBROWSKI, USA RCX - C. ROSE IV, USA DPV - P. DUBOVSKY, SLOVAKIA RMQ - M. RESZELSKI, POLAND FMC - M. FRANGEUL, FRANCE RR - R. ROYER, USA FMQ - M. FIASCHI, ITALY SCZ - E. SCHWEITZER, FRANCE FSE - S. FOGLIA, ITALY SLQ - L. SMELCER, CZECH REPUBLIC GGX - G. GUZMAN, FRANCE SMI - A. SMITH, ENGLAND GMB - M. GABLE, USA SPK - P. SCHMEER, GERMANY GMY - M. GLENNON, IRELAND SRX - R. STUBBINGS, AUSTRALIA GOT - T. GOMEZ, SPAIN SXN - M. SIMONSEN, USA GRL - B. GRANSLO, NORWAY VET - M. VERDENET, FRANCE GSR - R. GESCHWIND, USA VFK - F. VOHLA, GERMANY HHU - H. HAUTECLER, BELGIUM WPX - P. WILLIAMS, NEW ZEALAND JCN - C. JONES, ENGLAND WSV - S. WOLFE, USA KB - W. KAMINSKI, USA WWJ - W. WILSON, ENGLAND KMA - M. KOMOROUS, CANADA ZRE - R. ZISSELL, USA KTO - T. KINNUNEN, FINLAND Please monitor these and other variable stars closely and phone-in, fax, or e-mail your observations to the AAVSO. Good observing! Janet A. Mattei, Director Rebecca Pellock, Technical Assistant ____________________________________________________________________________ Symbols may include: < = fainter than magnitude given (variable not seen) : = uncertain CCDV = Charge-coupled device with (V) filter If you would like to contribute to AAVSO NEWS FLASH, please send observations of unusual variable star activity to: observations@aavso.org Those who wish to subscribe (free of charge) or unsubscribe to NEWS FLASH may do so by visiting the following web page: http://www.aavso.org If you would like data from the AAVSO International Database for research purposes, please send your request to: Janet Mattei, AAVSO Director, at aavso@aavso.org An archive of past issues of the News Flash is available at the following web page: http://www.aavso.org/newsflash/ We look forward to including your observations in future editions of AAVSO NEWS FLASH! ____________________________________________________________________________