COMMISSIONS AND OF THE IAU INFORMATION BULLETIN ON VARIABLE STARS Nos Octob er May EDITORS L SZABADOS and K OLAH TECHNICAL EDITOR A HOLL TYPESETTING K ORI KONKOLY OBSERVATORY H BUDAPEST PO Box HUNGARY IBVSogyallakonkolyhu URL httpwwwkonkolyhuIBVSIBVShtml HU ISSN 2 CONTENTS 1994 No page E F GUINAN J J MARSHALL F P MALONEY A New Apsidal Motion Determination For DI Herculis ::::::::::::::::::::::::::::::::::::: D TERRELL D H KAISER D B WILLIAMS A Photometric Campaign on OW Geminorum :::::::::::::::::::::::::::::::::::::::::::: B GUROL Photo electric Photometry of OO Aql :::::::::::::::::::::::: LIU QUINGYAO GU SHENGHONG YANG YULAN WANG BI New Photo electric Light Curves of BL Eridani :::::::::::::::::::::::::::::::::: S Yu MELNIKOV V S SHEVCHENKO K N GRANKIN Eclipsing Binary V CygS Former InsaType Variable :::::::::::::::::::: J A BELMONTE E MICHEL M ALVAREZ S Y JIANG Is Praesep e KW Actually a Delta Scuti Star ::::::::::::::::::::::::::::: V L TOTH Ch M WALMSLEY Water Masers in L :::::::::::::: R L HAWKINS K F DOWNEY Times of Minimum Light for Four Eclipsing of Four Binary Systems :::::::::::::::::::::::::::::::::::::::::: B GUROL S SELAN Photo electric Photometry of the ShortPeriod Eclipsing Binary HW Virginis :::::::::::::::::::::::::::::::::::::::::::::: M P SCHEIBLE E F GUINAN The Sp otted Young Sun HD EK Dra ::::::::::::::::::::::::::::::::::::::::::::::::::: ::::::::::::: M BOS Photo electric Observations of AB Doradus ::::::::::::::::::::: YULIAN GUO A New VR Cyclic Change of H in Tau :::::::::::::: YULIAN GUO A Detection of Moving Bumps in the Emission Proles of the Be Star FX Lib ::::::::::::::::::::::::::::::::::::::::::::::::::: :::: J R PERCY W AU APT Observations of SmallAmplitude Red Variables ::::::::::::::::::::::::::::::::::::::::::::::::::: :::::::::::::: J C THOMAS I PACHOULAKIS V and UV Photometry of HD J MANEK CF Cas NSV ::::::::::::::::::::::::::::::::::::::: M ALUIGI G GALLI A GASPANI Photo electric Observations of the Close Eclipsing Binary VW Cephei ::::::::::::::::::::::::::::::::::::::::: V MAKAROV U BASTIAN E HOEG V GROSSMANN A WICENEC New Bright Medium and High Amplitude Variables Discovered by the Tycho Instrument of the Hipparcos Satellite :::::::::::::: D H KAISER Five New DHK Variables :::::::::::::::::::::::::::::::: C STERKEN J MANFROID A Flare Event on HR ::::::::::::::: W WENZEL The Long Term Photometric Behaviour of the Cataclysmic Binary HX Pegasi ::::::::::::::::::::::::::::::::::::::::::::::::::: :::::: D P KJURKCHIEVA D V MARCHEV Eclipse Curves of UX UMa in ::::::::::::::::::::::::::::::::::::::::::::::::::: ::::::::::::::::::: B E SCHAEFER D HOFFLEIT KY Ara is Misidentied ::::::::::::: P NORTH M BURNET Geneva Photometry of the Eclipsing Binary TV Nor ::::::::::::::::::::::::::::::::::::::::::::::::::: :::::::::::::::: S V ANTIPIN Ten New Variable Stars in Hercules and Corona Borealis 3 No page O DEMIRCAN M TANRIVER A DEVLEN A BULUT A SAVRANLAR Y YUKSEL A A SCILAR Z ASLAN H AK A GOK CE E CINARG SEN G TASE A CIKGOZ C IBANOGLU H DUNDAR H CALI SKAN H VARLI H OZDEMIR Y ALEMDAR B BEKTASLIZ MUYESSEROGLU B ALBAYRAK A ISKENDER N CUBUKCU O CAKIRLIR T YILDIRIM F GOKSEN S O SELAM K YUCE Y KAYA K ULU C M DAGCI Y ERDAL N KOKER Photo electric Observations and Minima Times of Four W UMa Systems LS Del SW Lac V Oph and AQ Psc :::::::::::::::::::::::::::::::::: P A HECKERT BVRI Photometry of CG Cygni :::::::::::::::::: L T MARKOVA G V ZHUKOV B and V Photo electric Observations of the Contact Binary XY Leo ::::::::::::::::::::::::::::::::::::::::::::: V P GORANSKIJ The Identication of Variable Stars Discovered with the Hubble Space Telescope in the Globular Cluster Messier :::::::::::::: N A GORYNYA N N SAMUS A S RASTORGOUEV Sp ectroscopic Binarity of the Cepheid BY Cas ::::::::::::::::::::::::::::::::::::::::::: F AGERER WW Cephei Elements Rediscovered and Improved :::::::: F AGERER W KLEIKAMP W MOSCHNER V Lyrae New Ephemeris and Lightcurve ::::::::::::::::::::::::::::::::::::::::::::::::: F AGERER Photometric Observation of V Cygni :::::::::::::::::: F AGERER T BERTHOLD VW Canum Venaticorum New Ephemeris and Lightcurve ::::::::::::::::::::::::::::::::::::::::::::::::::: ::::::::: K T JOHANSEN B NORDSTROM A PreMainSequence Companion to AR Aurigae ::::::::::::::::::::::::::::::::::::::::::::::::::: :::::::: T KATO AK Cancri a New LargeAmplitude SU UMaType Dwarf Nova ::::::::::::::::::::::::::::::::::::::::::::::::::: :::::::::::::::::: S V ANTIPIN N N KIREEVA N N SAMUS Positions of Variable Stars in Plauts Field ::::::::::::::::::::::::::::::::::::::::::::::::::: : A P ODELL Timings of Selected Variable Stars :::::::::::::::::::::::: E BUDDING G HUDSON R HUDSON UBV Observations of AB Dor ::::::::::::::::::::::::::::::::::::::::::::::::::: ::::::::::::::::::: E V KAZAROVETS N N SAMUS The nd NameList of Variable Stars ::::::::::::::::::::::::::::::::::::::::::::::::::: ::::::::::::::::: L N BERDNIKOV O V VOZIAKOVA M A IBRAGIMOV BVR Observations of the DoubleMo de Cepheids AS Cas V Sct and BQ Ser : L N BERDNIKOV O V VOZIAKOVA M A IBRAGIMOV UBVR Observations of the DoubleMo de Cepheids CO Aur TU Cas and EW Sct :: F AGERER P FRANK Photometric Observation of NS Mono cerotis ::: E LAPASSET N GOMEZ AW Virginis Photo electric Times of Minimum and Improved Period ::::::::::::::::::::::::::::::::::::::::::::::::::: ::: L N BERDNIKOV O V VOZIAKOVA Photo electric UBVR Observations of the Peculiar Cepheid V Lyr :::::::::::::::::::::::::::: D Yu TSVETKOV N N PAVLYUK Observations of SN ad :::::: P NORTH C RICHARD HD An Eclipsing Magnetic Ap Star at Last ::::::::::::::::::::::::::::::::::::::::::::::::::: ::::::::::::::: 4 No page J D FERNIE N R EVANS B BEATTIE S SEAGER A Database of Galactic Classical Cepheids :::::::::::::::::::::::::::::::::::::::::::::::::: CHA GUANGWEI LI YONGSHENG XU JUN Short TimeScale Variation of Aur H Blue Wing Emission :::::::::::::::::::::::::::::::: Z BALOG J VINKO Is TX Delphini a Population I Classical Cepheid ::::::::::::::::::::::::::::::::::::::::::::::::::: :::::::::::::: E PAUNZEN U HEITER W W WEISS Detection of Variability in HD ::::::::::::::::::::::::::::::::::::::::::::::::::: ::::::::::::: T KATO Observations of Sup erhumps in V Cyg during the Sup eroutburst ::::::::::::::::::::::::::::::::::::::::::::::::::: ::::::::: M ALUIGI G GALLI A GASPANI Photo electric Observations of the Eclipsing Variable DO Cas :::::::::::::::::::::::::::::::::::::::::::::::: L N BERDNIKOV O V VOZIAKOVA Photo electric UBVR Observations of the Peculiar Cepheid RU Cam ::::::::::::::::::::::::::::: D NOGAMI T KATO S MASUDA R HIRATA Discovery of the Second PG Typ e Dwarf Nova V Ori :::::::::::::::::::::::: S RUCINSKI R F GARRISON B DUFFEE UFilter Photometry of AB Doradus ::::::::::::::::::::::::::::::::::::::::::::::::::: ::::::::::: A SKOPAL Photometric Observations of Eclipses in the Symbiotic Triple System CH Cygni ::::::::::::::::::::::::::::::::::::::::::::::::::: :::::: A V BERDYUGIN T M RACHKOVSKAJA S I ROSTOPCHIN A E TARASOV The Discovery of H Emission in V Cas ::::::::::::: R WASATONIC A Possible Variable Star Reclassication for TX Piscium V N OBRIDKO Yu R RIVIN Solar Magnetic Field Mo dulation of the Neutrino Flux ::::::::::::::::::::::::::::::::::::::::::::::::::: ::::::::: J J MARSHALL E F GUINAN G P McCOOK Possible Low Amplitude Light Variations of DI Her ::::::::::::::::::::::::::::::::::::: E S PARSAMIAN On the Age of Flare Star FS and the Cluster of Persei ::::::::::::::::::::::::::::::::::::::::::::::::::: :::::::::::::::: D NOGAMI T KATO S MASUDA R HIRATA Observations of a Newly Discovered SU UMaType Star HV Aurigae ::::::::::::::::::::::: D HOFFLEIT More Clarication Needed for NSV and VY Lyrae M J SARNA W PYCH R C SMITH New Period Determination for EY Cyg ::::::::::::::::::::::::::::::::::::::::::::::::::: :::::::::::::::: L L KISS K SZATMARY Has the Delta Scuti Star BE Lyn a Companion ::::::::::::::::::::::::::::::::::::::::::::::::::: ::::::::::: R G SAMEC B CARRIGAN E E PADGEN Precision B V Light Curves of EK Comae Berenices :::::::::::::::::::::::::::::::::::::::::::: D H KAISER M E BALDWIN J GUNN D TERRELL C STEPHAN B HAKES Period Correction for the New Eclipsing Binary DHK ::::::: L A MILONE Faint Companions to UX Antliae :::::::::::::::::::::::: E RODRIGUEZ F M ZERBI A Long Period Early FType Variable HR ::::::::::::::::::::::::::::::::::::::::::::::::::: ::::::::::::::: K BARLAI B SZEIDL Onset of Pulsation of V in M ::::::::::::: 5 No page H ROVITHISLIVANIOU P ROVITHIS G OPRESCU A DUMITRESCU New Minima Times and Period Behaviour for the Eclipsing Variables RT Andromedae i Bo otis and GO Cygni ::::::::::::: R HUDEC Optical Monitoring of Two XRay Transient Sources :::::::: R W HANUSCHIK S STEFL W HUMMEL M VRANCKEN Observations of a VR Transition in the Be Star Oph :::::::::::::::::: A SCHNELL H M MAITZEN Photometric Examination of CPPeculiarity for HD HR HR and HR :::::::::::::: K KRISCIUNAS E F GUINAN G P McCOOK R F GRIFFIN R A CROWE M ROBERTS K D LUEDEKE P POBOCIK Photometric Variability of the Ellipsoidal Star and Sp ectroscopic Binary Camelopardalis J D GRAY R G SAMEC B J CARRIGAN Complete CCD U B V R I Light Curves of the Short Period Eclipsing Binary V Lyrae :::::::: R HAEFNER CCD Photometry of Six Faint Cataclysmic Variables ::::: E WUNDER The First Period Change Discovered in the Bright Algol System UV Leonis :::::::::::::::::::::::::::::::::::::::::::::::::::