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: 0207-63 WX HYI 1934+30 EM CYG No. 1167 1744-06 RS OPH 1957-70 GS PAV May 30, 2003 ---------------------------------------------------------------------------- 0207-63 WX HYDRI The dwarf nova type (SU UMA subclass) cataclysmic variable WX HYI appears to be in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 27.6590 <14.0 SRX MAY 30.6290 13.7 SRX MAY 28.5870 <13.7 SRX ---------------------------------------------------------------------------- 1744-06 RS OPHIUCHI There have been reports that the recurrent nova RS OPH may be brightening. If this is the case, it may be that the star is simply on the bright side of it's regular between-outburst modulations. This could also be the beginning of a significant brightening. When RS Oph does have an outburst the rise to maximum occurs in about a day, so please keep a close eye on this star so that we can determine the current status of this object. Included below are observations of RS OPH recently reported to the AAVSO: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 27.1875 11.4 STI MAY 28.9458 10.6 BVE MAY 27.4062 11.3 LMK ---------------------------------------------------------------------------- 1934+30 EM CYGNI The dwarf nova type (Z CAM subclass) cataclysmic variable EM CYG is in outburst, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 27.2646 14.2 TDB MAY 28.0583 13.6 BMM MAY 27.3771 14.0 DLA MAY 29.9444 12.6 OCR MAY 27.9486 13.4 OJR MAY 30.0819 12.9 SUI ---------------------------------------------------------------------------- 1957-70 GS PAVONIS The cataclysmic variable GS PAV may be brightening, as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials MAY 28.5720 <15.1 SRX MAY 30.6370 15.1 SRX ---------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: BMM - M. BIESMANS, BELGIUM OJR - J. OSORIO, SPAIN BVE - E. VAN BALLEGOIJ, NETHERLANDS SRX - R. STUBBINGS, AUSTRALIA DLA - A. DILL, USA STI - P. STEFFEY, USA LMK - M. LINNOLT, USA SUI - R. SMITH, ENGLAND OCR - C. OTTEN, BELGIUM TDB - D. TAYLOR, CANADA 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! ____________________________________________________________________________