COMMISSION 27 OF THE I.A.U. INFORMATION BULLETIN ON VARIABLE STARS. Nos May 1976 February
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1 COMMISSION 27 OF THE I.A.U. INFORMATION BULLETIN ON VARIABLE STARS Nos May 1976 February EDITOR: B. SZEIDL, KONKOLY OBSERVATORY 1525 BUDAPEST, Box 67, HUNGARY
2 CONTENTS 1001 ON THE PERIOD OF THE SECONDARY CYCLE IN XZ CYGNI P. Kunchev 21 May FLARE STARS IN THE REGION OF NGC III. M.K. Tsvetkov, L.K. Erastova, K.P. Tsvetkova 22 May IMPROVED PERIOD OF THE Ap VARIABLE HR 5153 Z. Mikulasek 28 May OPTICAL VARIATIONS OF Cen X-3 A.R. Walker, P.R. Hurly 4 June ON THE PERIOD-LUMINOSITY RELATION OF THE DELTA SCUTI STARS T.Z. Dworak, S. Zieba 9 June FLARE ACTIVITY ON UV CETI, W.E. Kunkel, N. Zarate 10 June BW BOOTIS - AN ALGOL TYPE ECLIPSING VARIABLE Maria Kurpinska 12 June NEW VARIABLE STARS IN A FIELD AROUND 38 o Per F. Gieseking 17 June PHOTOGRAPHIC OBSERVATIONS OF EE CEPHEI AT THE 1969 MINIMUM PHOTOGRAPHIC OBSERVATIONS OF EE CEPHEI AT THE 1975 MINIMUM MINIMA OF ECLIPSING VARIABLES L. Baldinelli, S. Ghedini, C. Tubertini 17 June A.R. HOGG'S UBV OBSERVATIONS OF U PEGASI Katherine C. Gordon 19 June NOVA AURIGAE 1964 N. Sanduleak 20 June PHOTOELECTRIC OBSERVATIONS OF AD LEONIS, EV LACERTAE AND A SUSPECTED FLARE STAR NEAR HZ HERCULIS W.A. Christiansen, R.H. Kaitchuck 20 June TY Men - DETERMINATION OF NEW LIGHT ELEMENTS R.R.D. Austin, Martin DeGeorge, Jr., R.C. Fleck, Jr. 23 June 1975
3 SPECTROPHOTOMETRY OF SIX RS CANUM VENATICORUM-TYPE BINARIES E.J. Weiler 1 July OBSERVATIONS OF THE PERIOD OF Y Leo A. Ghezloun, M.A. Svechnikov 2 July THREE REVISED PERIODS AND TWO NEW VARIABLE STARS Dorrit Hoffleit 3 July FLARES OBSERVED FROM UV CETI A.H. Jarrett, J.B. Gibson 7 July FLARE PHOTOMETRY OF YZ CANIS MINORIS A.H. Jarrett, J.B. Gibson 7 July PHOTOELECTRIC TIMES OF MINIMA OF RZ Cas T.E. Margrave, M.A. Lukes, J.H. Doolittle, R.S. Evenskaas, J.W. MacDonald, N.D. Murray 8 July PHOTOELECTRIC OBSERVATIONS OF THE STAR UV Cet IN 1972 M.E. Contadakis, L.N. Mavridis 22 July ABOUT THE VARIABILITY OF THE ECLIPSING VARIABLE STAR NQ HERCULIS S. Bozkurt, C. Ibanoglu, O. Gulmen, N. Gudur 23 July MINIMA OF THE ECLIPSING VARIABLE U SAGITTAE D.H. McNamara, K.A. Feltz, Jr. 23 July A CRITICAL REMARK ABOUT THE DETERMINATION OF MINIMUM TIMES H.W. Duerbeck 23 July H beta-photometry OF HR 8024 AND HR 8102 G.C. Kilambi 29 July ON THE VARIABILITY OF Theta1 Ori A K.Aa. Strand 31 July SPECTROSCOPIC OBSERVATIONS OF NOVA SCUTI 1975 H.W. Duerbeck, W.C. Seitter 1 August PHOTOELECTRIC OBSERVATIONS OF UV Cas F. Zavatti 4 August PHOTOELECTRIC MINIMA OF ER Ori AND AW Cam F. Zavatti, R. Burchi 5 August 1975
4 1029 PHOTOELECTRIC PHOTOMETRY OF WY CANCRI C.R. Chambliss 7 August REVISED ELEMENTS OF ECLIPSING STARS P. Ahnert 7 August TWO POSSIBLE NEAR-BY FLARE STARS IN CANCER G. Haro, E. Chavira, G. Gonzalez 12 August V3804 Sgr M. Brewster 12 August THE ECLIPSING BINARY SYSTEM X Tri M.I. Kumsiashvili 13 August VARIABILITY OF THE DELTA SCUTI STAR 38 CANCRI G. Guerrero 13 August CSV : A VARIABLE CARBON STAR PROBABLY IDENTICAL WITH AS 137 M. Sanduleak 14 August PHOTOELECTRIC OBSERVATIONS OF UV CASSIOPEIAE P. Tempesti 14 August A REVISED PERIOD FOR ONE OF THE WESSELINK-SHUTTLEWORTH SMC VARIABLES A.M. van Genderen 22 August OBSERVATIONS DE N Per 1974 L.A. Ourassine, Ida A. Ourassina 22 August AN URSAE MAJORIS IS PROBABLY EXNOVA? B.V. Kukarkin 28 August PERIOD FOR BV 1634 Marienne Hibbert, Dorrit Hoffleit 28 August HD , A BETA LYRAE TYPE STAR F. van Leeuwen 2 September NOVA AURIGAE 1964 H. Gessner 5 September ECLIPSE TIMINGS OF CATACLYSMIC VARIABLES G.S. Mumford 9 September 1975
5 1044 CONFIRMATION OF THE PERIODICITY AND THE PERIOD (ABOUT 30 YEARS) OF THE SHELL OF OMICRON ANDROMEDAE M. Fracassini, L.E. Pasinetti 9 September PHOTOELECTRIC OBSERVATIONS OF DO CEPHEI A.J. Nicastro 10 September PHOTOGRAPHIC OBSERVATIONS OF SUPERNOVA 1971-g IN NGC 4165 S.K. Fomin, L.A. Urasin CORRECTION TO IBVS No L. Baldinelli 24 September PHOTOELECTRIC MAXIMA OF RZ CEPHEI B. Cester, I. Todoran 26 September A PRELIMINARY REPORT ON THE LIGHT VARIATION OF THE EXTREME A-SUPERGIANT CD -33d12119 (= 3U ?) A.M. van Genderen, G. Hammerschlag-Hensberge 3 October LIGHT CHANGES OF T TAURI STARS IN THE CHAMAELEON ASSOCIATION H. Mauder, F.M. Sosna 6 October A NEW RED SEMIREGULAR VARIABLE STAR: BD +18d4590 P. Tempesti 13 October PHOTOELECTRIC TIMES OF MAXIMA OF BW Vul T.E. Margrave, J.W. Mefford 15 October A SHORT PERIOD LIGHT VARIATION IN NOVA CYGNI 1975 P. Tempesti 16 October PHOTOELECTRIC MINIMA OF ECLIPSING BINARIES E. Pohl, A. Kizilirmak 20 October HR 6611: AN INTERESTING NEW ECLIPSING BINARY D.W. Kurtz 22 October PHOTOELECTRIC PHOTOMETRY OF CW Ser W. Gieren, F. Gieseking, M. Hoffmann 27 October ETOILES NAINES ROUGES VARIABLES M. Petit 4 November 1975
6 1057 V1057 CYGNI G. Welin CORRECTION TO IBVS No A.J. Nicastro CORRECTION TO IBVS No P. Tempesti 4 November SHORT PERIOD VARIABILITY OF NOVA CYGNI 1975 I. Semeniuk 5 November NON-VARIABILITY OF NQ Her T.D. Padalia 5 November ABOUT THE INTRINSIC POLARIZATION OF AW UMa V. Piirola 14 November POLARIMETRIC OBSERVATIONS OF U CEPHEI DURING THE PRIMARY ECLIPSE V. Piirola 14 November PHOTOGRAPHIC OBSERVATIONS OF THE SUPERNOVA 1970-j IN NGC 7619 Inga Dubjago, S.S. Tokhtas'ev 17 November TWO PECULIAR VARIABLE STARS: OX Cyg AND GR 128 Dorrit Hoffleit 17 November THREE LONG-PERIOD VARIABLES IN SAGITTARIUS Dorrit Hoffleit 17 November PHOTOELECTRIC MINIMA OF ECLIPSING VARIABLES L. Patkos 18 November IMPROVED ELEMENTS OF THE NEW ECLIPSING BINARY BD +60d2289 A.A. Wachmann 19 November PHOTOMETRY OF THE ECLIPSING BINARY U OPHIUCHI AND OF NOVA CYGNI 1975 G.A. Becker, C.R. Chambliss, A. Kiasat 26 November st NAME-LIST OF VARIABLE STARS B.V. Kukarkin, P.N. Kholopov, N.P. Kukarkina 27 November GS ANDROMEDAE G. Romano 27 November ON THE PERIOD AND ORBIT OF THE ECLIPSING BINARY Theta1 Ori A W.A. Feibelman 29 November 1975
7 1071 A NEW BRIGHT ECLIPSING STAR 71 Dra W. Furtig 29 November OBSERVATIONS OF NOVA CYGNI 1975 AT THE TORUN OBSERVATORY A. Woszczyk, S. Krawczyk, A. Strobel 30 November DOUBLE MODE CEPHEID V367 Sct IN OPEN CLUSTER NGC 6649 Yu.N. Efremov, P.N. Kholopov 1 December UBV OBSERVATIONS OF NOVA CYGNI 1975 H. Lindgren, L. Lindegren V624 Her Dorrit Hoffleit 8 December Halpha SPECTROSCOPY OF THE RS CVn STAR UX Ari (HD 21242) Kathy Mulligan, B.W. Bopp 15 December NOTE ON THE PERIOD VARIATION IN THE WHITE-DWARF ECLIPSING BINARY BD +16d516 T.J. Herczeg 16 December VARIABLE STARS IN THE GLOBULAR CLUSTER NGC 5286 C.R. Fourcade, J.R. Laborde, A.A. Puch, J.R. Colazo, J.C. Arias 23 December PHOTOELECTRIC OBSERVATIONS OF VZ Cnc (HD 73857) G. Hahn, G. Lustig, H. Jasicek, G. Klement 28 December THE NEW PHOTOMETRIC ELEMENTS OF BS DRACONIS Dorin Chis, V. Pop, I. Todoran 2 January OBSERVATIONS OF THE MINIMUM OF Theta1 Ori A M.F. Walker 8 January PHOTOELECTRIC MINIMA OF ECLIPSING BINARIES T.Z. Dworak 13 January INACTIVE STATE OF HZ Her W. Wenzel, R. Hudec 15 January CLOSE BINARIES WITH H AND K EMISSION D.M. Popper 20 January SIMULTANEOUS TWO CHANNEL PHOTOELECTRIC OBSERVATIONS OF EV Lac B.N. Andersen 22 January 1976
8 1085 STAR ON POSITION OF PKS VARIABLE C.J. Smith 24 January PHOTOELECTRIC LIGHT-CURVES AND MINIMA OF TZ BOOTIS N. Gudur, C. Ibanoglu, O. Gulmen, S. Bozkurt 25 January PHOTOELECTRIC LIGHT-CURVES OF CN And S. Bozkurt, O. Gulmen, C. Ibanoglu, N. Gudur 25 January NEW OBSERVATIONS OF THE WHITE DWARF ECLIPSING BINARY V471 Tauri C. Ibanoglu 25 January PHOTOELECTRIC R, I OBSERVATIONS OF NOVA CYGNI 1975 P.S. The, M. van der Klis 1 February PHOTOELECTRIC LIGHT CURVES OF AS Cam O. Gulmen, C. Ibanoglu, S. Bozkurt, N. Gudur CORRECTION TO IBVS No D.M. Popper 2 February VZ Dor IS VW Dor J.F. Dean 2 February PERIOD AND PERIOD CHANGE OF THE ECLIPSING BINARY BV 549 SCORPII J. Rahe, E. Schoffel 3 February THE EMISSION-LINE STARS FG AND FH AQUILAE N. Sanduleak 4 February PHOTOELECTRIC OBSERVATIONS OF CI CYGNI DURING THE OUTBURST OF 1971 AND 1973 P. Tempesti 5 February THE PHOTOMETRIC ACTIVITY OF o And FROM OCTOBER '75 TO JANUARY '76 M. Bossi, G. Guerrero, L. Mantegazza 6 February ON PERIOD-SPECTRUM RELATION FOR DELTA SCUTI STARS AND DWARF CEPHEIDS M.S. Frolov 7 February "ULTRA-VIOLET" BLAZHKO-EFFECT OF X Ari M.S. Frolov 7 February ON THE SHORT PERIOD LIGHT VARIATION OF NOVA CYGNI 1975 (V1500 Cyg) P. Tempesti 9 February 1976
9 1099 SPECIAL ISSUE OF SOVIET ASTRONOMICAL JOURNAL WILL COLLECT INVESTIGATION OF NOVA Cyg 1975 B.V. Kukarkin, E.R. Mustel 10 February PHOTOELECTRIC MINIMA AND LIGHT CURVES OF BS DRACONIS C. Ibanoglu, S. Bozkurt, N. Gudur, O. Gulmen 11 February 1976
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COMMISSION 27 OF THE I.A.U. INFORMATION BULLETIN ON VARIABLE STARS. Nos November 1977 July
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