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: 0058+40 RX AND 1508+23 NY SER No. 1196 0109+37 FO AND 1640+25 AH HER July 14, 2003 0139+37 AR AND 1804+67 EX DRA 0206+57A TZ PER 1830+24A CH HER 1402-44 V834 CEN 1953+77 AB DRA ---------------------------------------------------------------------------- 0058+40 RX ANDROMEDAE The dwarf nova type (Z CAM subclass) cataclysmic variable RX AND is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 10.0650 14.1 PYG JUL 13.0920 11.3 SPK JUL 12.0800 <13.5 SPK JUL 14.0576 11.0 BVE JUL 12.5729 11.5 LMK JUL 14.0610 11.8 PYG JUL 13.0650 11.3 PYG JUL 14.3375 11.0 TDB ---------------------------------------------------------------------------- 0109+37 FO ANDROMEDAE The dwarf nova type (SU UMA subclass) cataclysmic variable FO AND is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 25.3800 15.1 CCDV JM JUL 13.0670 14.4 PYG JUN 28.3229 <14.8 TDB JUL 14.0630 14.3 PYG JUL 10.0690 <14.8 PYG JUL 14.3479 13.9 TDB ---------------------------------------------------------------------------- 0139+37 AR ANDROMEDAE The dwarf nova type cataclysmic variable AR AND appears to be undergoing an outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 05.6076 <15.8 LMK JUL 13.0730 <14.3 PYG JUL 12.5938 13.6 LMK ---------------------------------------------------------------------------- 0206+57A TZ PERSEI The dwarf nova type (Z CAM subclass) cataclysmic variable TZ PER appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 10.0650 14.2 PYG JUL 14.0660 13.1 PYG JUL 13.0700 13.1 PYG ---------------------------------------------------------------------------- 1402-44 V834 CENTAURI The AM Her type cataclysmic variable V834 CEN may be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUN 08.7120 15.2 CCD MLF JUL 10.7230 14.3 MLF ---------------------------------------------------------------------------- 1508+23 NY SERPENTIS The dwarf nova type (SU UMA subclass) cataclysmic variable NY SER appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 05.9120 <16.4 CCDV RZD JUL 09.9560 <14.7 PYG JUL 06.1660 <15.5 TDB JUL 12.1597 <14.4 TDB JUL 07.0130 <14.7 PYG JUL 12.9550 <14.7 PYG JUL 08.9400 <14.7 PYG JUL 13.9490 14.8 PYG ---------------------------------------------------------------------------- 1640+25 AH HERCULIS The dwarf nova type (Z CAM subclass) cataclysmic variable AH HER is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 07.0150 14.0 PYG JUL 11.2264 11.1 TDB JUL 08.9440 13.7 PYG JUL 11.9440 11.8 VOL JUL 08.9465 14.1 GCO JUL 12.9580 12.0 PYG JUL 09.9580 13.0 PYG JUL 13.9580 12.0 PYG JUL 10.0312 12.8 OCR JUL 14.0979 12.8 CGF JUL 10.9236 12.8 GCO ---------------------------------------------------------------------------- 1804+67 EX DRACONIS The eclipsing dwarf nova type cataclysmic variable EX DRA appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 08.9670 15.5 PYG JUL 13.0100 12.9 PYG JUL 09.9870 15.0 PYG JUL 13.9780 13.1 PYG ---------------------------------------------------------------------------- 1830+24A CH HERCULIS The dwarf nova type cataclysmic variable CH HER appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 08.9550 <15.1 PYG JUL 12.9740 15.2 PYG JUL 09.9650 <15.1 PYG JUL 13.9670 15.3: PYG ---------------------------------------------------------------------------- 1953+77 AB DRACONIS The dwarf nova type (Z CAM subclass) cataclysmic variable AB DRA may be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials JUL 09.9900 14.9 PYG JUL 12.9900 13.1 PYG JUL 10.0118 <13.1 OCR JUL 14.1000 <13.6 CGF ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: BVE - E. VAN BALLEGOIJ, NETHERLANDS OCR - C. OTTEN, BELGIUM CGF - G. CHAPLE JR., USA PYG - G. POYNER, ENGLAND GCO - C. GUALDONI, ITALY RZD - D. RODRIGUEZ, SPAIN JM - R. JAMES, USA SPK - P. SCHMEER, GERMANY LMK - M. LINNOLT, USA TDB - D. TAYLOR, CANADA MLF - I. MONARD, SOUTH AFRICA VOL - W. VOLLMANN, AUSTRIA 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! ____________________________________________________________________________