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COMMISSION 27 of the I.A.U. INFORMATION BULLETIN on VARIABLE STARS Nos. 1201-1300 1976 November – 1977 July EDITOR: B. SZEIDL

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COMMISSION 27 of the I.A.U. INFORMATION BULLETIN on VARIABLE STARS Nos. 1201-1300 1976 November – 1977 July EDITOR: B. SZEIDL COMMISSION 27 OF THE I.A.U. INFORMATION BULLETIN ON VARIABLE STARS Nos. 1201-1300 1976 November – 1977 July EDITOR: B. SZEIDL, KONKOLY OBSERVATORY 1525 BUDAPEST, Box 67, HUNGARY CONTENTS 1201 HS AURIGAE D.M. Popper 9 November 1976 1202 SPECTROSCOPIC OBSERVATIONS OF 53 Ari M.C. Lane 10 November 1976 1203 AN IMPROVED PERIOD OF V387 Cyg T. Berthold CORRECTION TO IBVS No. 1163 E. Pohl, A. Kizilirmak 15 November 1976 1204 IS THE VARIABLE WX CETI A NOVA? S.I. Gaposhkin 15 November 1976 1205 OBSERVATIONS OF RECENT NOVAE H. Huth 19 November 1976 1206 PHOTOGRAPHIC OBSERVATIONS OF GU Sgr Dorrit Hoffleit 19 November 1976 1207 IMPROVED RESULTS FOR SEVEN SAGITTARIUS VARIABLES Dorrit Hoffleit 23 November 1976 1208 FURTHER COMMENTS ON THE PERIOD OF V743 Cen E.H. Geyer 23 November 1976 1209 THE DOUBLE-MODE CEPHEIDS GZ Car AND UZ Cen R.S. Stobie 25 November 1976 1210 PHOTOELECTRIC OBSERVATIONS OF UV CETI B.B. Sanwal 29 November 1976 1211 A TENTATIVE SPECTROSCOPIC ORBIT OF Theta1 Ori A E. Lohsen 1 December 1976 1212 COPERNICUS OBSERVATIONS OF THE NON-ECLIPSING RS CVn BINARY HR 1099 E.J. Weiler 2 December 1976 1213 SPECTRAL INFORMATION ON NEW AND KNOWN LONG-PERIOD AND RELATED VARIABLES AND SOME NEW LATE-TYPE EMISSION-LINE STARS C.B. Stephenson, N. Sanduleak 5 December 1976 1214 ECLIPSING BINARIES FOUND SPECTROSCOPICALLY III. HD 199497 H.E. Bond 7 December 1976 1215 Pi PISCIS AUSTRINI H.E. Bond 7 December 1976 1216 INFRARED AND OPTICAL PHOTOMETRY OF T Tau AND RY Tau IN 1975-1976 E.A. Kolotilov, G.V. Zajtseva, V.I. Shenavrin 13 December 1976 1217 REMARK ON THE PERIOD OF AU MONOCEROTIS I. Todoran 13 December 1976 1218 THE SPECTRUM OF WX HYDRI N. Sanduleak 16 December 1976 1219 SHORT TERM PERIODICITY OF V1500 CYGNI IN JULY-AUGUST OF 1976 V.V. Prokof'eva, A.N. Abramenko 16 December 1976 1220 AN EXTREME REDDENING OF THE CARBON STAR RW LMi = CIT 6 A. Alksnis, I. Eglitis 20 December 1976 1221 ON THE PERIOD BETWEEN FLARES OF V1216 SAGITTARII A.H. Jarrett, G. Grabner 23 December 1976 1222 LIGHT CURVE OF THE EMISSION VARIABLE IN SAGITTA W. Wenzel 27 December 1976 1223 PHOTOELECTRIC OBSERVATIONS OF u HERCULIS AND A REMARK ON ITS PERIOD T.J. Herczeg 30 December 1976 1224 IMPROVED LIGHT ELEMENTS OF HX Arae K. Walter, H.W. Duerbeck 30 December 1976 1225 VARIABLE STAR IN EE CEPHEI COMPARISON SEQUENCE L. Baldinelli, S. Ghedini 30 December 1976 1226 PHOTOELECTRIC UBV PHOTOMETRY OF SY For N. Vogt 7 January 1977 1227 REMARKS CONCERNING IZ CYGNI N. Sanduleak, W.P. Bidelman 7 January 1977 1228 PHOTOGRAPHIC AND PHOTOELECTRIC OBSERVATIONS OF RZ Oph L. Baldinelli, S. Ghedini 10 January 1977 1229 VARIABLE STARS IN THE GLOBULAR CLUSTER NGC 6362 C.R. Fourcade, J.R. Laborde, A.A. Puch, J.R. Colazo 12 January 1977 1230 uvby PHOTOMETRY OF THE SUSPECTED VARIABLE Omega2 Sco C. Sterken 19 January 1977 1231 NN CEPHEI AND PP LACERTAE A. Figer, R. Rolland 24 January 1977 1232 Theta2 TAURI A POSSIBLE NEW DELTA SCUTI STAR S. Horan 25 January 1977 1233 PHOTOELECTRIC PHOTOMETRY OF NOVA VULPECULAE C.R. Chambliss 31 January 1977 1234 PROGRAMME OF COOPERATIVE FLARE STAR OBSERVATIONS FOR 1977 L.N. Mavridis 31 January 1977 1235 PHOTOELECTRIC OBSERVATIONS OF UW CMa Hitoshi Ogata, Chiaki Hukusaku 1 February 1977 1236 1976 PHOTOELECTRIC PHOTOMETRY OF Lambda ANDROMEDAE H.J. Landis, L.P. Lovell, D.S. Hall, R.W. Kelley 10 February 1977 1237 PERIOD CHANGES OF THE EARLY TYPE ECLIPSING BINARY SZ CAMELOPARDALIS D. Chochol 10 February 1977 1238 OBSERVATIONS OF PRIMARY MINIMUM OF Theta1 Ori A M.F. Walker 14 February 1977 1239 A PERIOD-LUMINOSITY RELATION FOR SHORT PERIOD MIRA VARIABLES K. Ferrari d'Occhieppo 14 February 1977 1240 FOUR-COLOUR PHOTOMETRY OF THE BRIGHT SOUTHERN VARIABLE HD 100198 C. Sterken 15 February 1977 1241 VARIABILITY OF HR 904 AND HR 8421 A.E. Lynas-Gray, P.W. Hill 16 February 1977 1242 ETOILES VARIABLES DE GRANDE PARALLAXE M. Petit 18 February 1977 1243 ABSOLUTE MAGNITUDES AND LOCAL FREQUENCY OF Beta CEPHEI STARS K. Ferrari d'Occhieppo 18 February 1977 1244 ON THE PERIOD OF THE ECLIPSING BINARY RW PERSEI W. van Hamme 21 February 1977 1245 ON THE BLAZHKO EFFECT IN AR Ser B.N. Firmanyuk 28 February 1977 1246 RADIAL VELOCITIES OF Me-TYPE STARS M. Ibanez 1 March 1977 1247 2 Pup B: A NEW BRIGHT ECLIPSING BINARY Bo Reipurth 7 March 1977 1248 62nd NAME-LIST OF VARIABLE STARS B.V. Kukarkin, P.N. Kholopov, V.P. Fedorovich, N.N. Kireyeva, N.P. Kukarkina, G.I. Medvedeva, N.B. Perova 9 March 1977 1249 MINIMA OF ECLIPSING VARIABLES A.D. Mallama, D.R. Skillman, P.A. Pinto, B.A. Krobusek 14 March 1977 1250 18-cm FLUX MEASUREMENTS OF BL LACERTAE K. Krisciunas 15 March 1977 1251 PHOTOMETRY OF RW Tri SIMULTANEOUSLY IN TWO COLOURS L. Winkler 17 March 1977 1252 A NEW ECLIPSING BINARY IN CYGNUS Dorrit Hoffleit 18 March 1977 1253 UBVR PHOTOMETRY OF SU TAURI A.U. Landolt 23 March 1977 1254 PHOTOELECTRIC MINIMA OF AB And AND X Tri Z. Tufekcioglu 24 March 1977 1255 MINIMA OF ECLIPSING VARIABLES J.M. Kreiner, M. Winiarski 25 March 1977 1256 V381 CYGNI AN RR LYRAE TYPE STAR Dorrit Hoffleit 25 March 1977 1257 HD 153747: A DELTA SCUTI VARIABLE C.J. McInally, B.J. McKay 29 March 1977 1258 ON THE NON-VARIABILITY OF BD +74d877 L. Winkler 31 March 1977 1259 PHOTOELECTRIC OBSERVATIONS OF DELTA CETI Zeynel Tunca 5 April 1977 1260 ON THE VISIBLE-BAND POLARIZATION OF HR 1099A R.H. Koch, R.J. Pfeiffer 7 April 1977 1261 THE OPTICAL COUNTERPART OF A06.20-00 AT MINIMUM F. Ciatti, A. Vittone 8 April 1977 1262 HV 1707: A VARIABLE CARBON STAR IN THE SMALL MAGELLANIC CLOUD N. Sanduleak, A.G.D. Philip 8 April 1977 1263 STATISTICS ON FLARE OBSERVATIONS OF UV Cet, YZ CMi AND AD Leo AT THE UTTAR PRADESH STATE OBSERVATORY S.D. Sinvhal, B.B. Sanwal 12 April 1977 1264 THE ACCELERATION OF THE ROTATION OF DQ Her E. Lohsen 13 April 1977 1265 INTERMEDIATE BAND LIGHT CURVES FOR FIVE SOUTHERN HD STARS A.F.J. Moffat 15 April 1977 1266 FLARE ACTIVITY ON G12-30 G.J. Veeder, O.L. Hansen 18 April 1977 1267 ETOILES VARIABLES PROCHES M. Petit 18 April 1977 1268 PHOTOELECTRIC PHOTOMETRY OF FG SAGITTAE C.A. Whitney 19 April 1977 1269 REQUEST FOR PHOTOMETRIC OBSERVATIONS OF U CEPHEI E.C. Olson 19 April 1977 1270 PHOTOMETRY OF HD 153747 H.J. Trodahl, D.J. Sullivan 21 April 1977 1271 A FLARE EVENT ON THE dM0e VARIABLE BY DRACONIS M.H. Slovak 25 April 1977 1272 ELEMENTS OF RV CRATERIS = BV 442 E. Schoeffel, J. Rahe 4 May 1977 1273 TWO DELTA SCUTI STARS IN THE PLEIADES M.A. Seeds, C.J. Stephens 5 May 1977 1274 UBV OBSERVATIONS OF A PRIMARY ECLIPSE OF Theta1 Ori A O.G. Franz 9 May 1977 1275 CSV 2851 - A RED DWARF VARIABLE I.C. Busko, G.R. Quast, C.A.O. Torres 11 May 1977 1276 PERIOD CHANGE OF THE RADIO BINARY RY SCUTI W. Wenzel, H. Gessner 12 May 1977 1277 ON THE CONNECTION BETWEEN PULSATIONS OF RY Sgr AND THE TOTAL LIGHT DECLINES A.F. Pugach 17 May 1977 1278 UBV PHOTOMETRY OF THE ECLIPSING BINARY SX AURIGAE C.R. Chambliss 18 May 1977 1279 A SMALL AMPLITUDE VARIABLE STAR, HD 164615 E.W. Burke, Jr., E.W. Burke, III, S. Lady 18 May 1977 1280 PERIODICITE D'ETOILES Ap AUSTRALES P. Renson 20 May 1977 1281 THE VARIABILITY OF PQ NORMAE = BV 1556 = HD 148013 E. Schoeffel 24 May 1977 1282 V1068 CYGNI, A LONG-PERIOD ECLIPSING BINARY Dorrit Hoffleit 25 May 1977 1283 WANTED: PHOTOELECTRIC AND SPECTROSCOPIC OBSERVATIONS OF THE UNUSUAL SYSTEM, V389 CYGNI Dorrit Hoffleit 25 May 1977 1284 BD -3d5357 AN UNUSUAL ECLIPSING BINARY M.M. Dworetsky, H.H. Lanning, P.E. Etzel, D.J. Patenaude 26 May 1977 1285 ON THE PERIOD OF SW Lac Zofia Frasinska, J.M. Kreiner 27 May 1977 1286 UBV PHOTOMETRY OF VV CEPHEI NEAR INGRESS A.U. Landolt 30 May 1977 1287 SEVEN-COLOUR PHOTOMETRY OF THE VARIABLE HD 25539 C. de Loore, C. Sterken CORRECTION TO IBVS No. 1269 E.C. Olson 31 May 1977 1288 THREE NEWLY DISCOVERED VARIABLE Ap STARS E.W. Burke, Jr., S. Lady 6 June 1977 1289 OBSERVATIONS OF ECLIPSING BINARIES AT THE NEW NATIONAL OBSERVATORY OF ATHENS, KRYONERION, GREECE E. Budding, A.R. Sadik, P. Niarchos, D.H. Jassur 6 June 1977 1290 V1705 AND V1706 Sgr Dorrit Hoffleit 7 June 1977 1291 PHOTOELECTRIC OBSERVATIONS OF THE SYMBIOTIC VARIABLE STAR EG And P. Tempesti 13 June 1977 1292 FLARE ACTIVITY ON Gl 569 O.L. Hansen, G.J. Veeder 14 June 1977 1293 A PHOTOELECTRIC SEARCH FOR OPTICAL VARIABILITY IN BLUE STRAGGLERS B.J. Hrivnak 15 June 1977 1294 SEVEN COLOUR PHOTOMETRY OF THE DELTA SCUTI STAR 27 Vir C. Sterken 20 June 1977 1295 HR 4668: A NEW BRIGHT VARIABLE STAR Gh. Deridder, C. Sterken, D. Vanbeveren 20 June 1977 1296 Omicron ANDROMEDAE: NO CONSPICUOUS RADIAL-VELOCITY VARIATIONS P. Harmanec, P. Koubsky, J. Krpata, F. Zdarsky, A. Dolenska 27 June 1977 1297 FURTHER LIGHT CURVE VARIATIONS OF SZ PISCIUM J.A. Eaton 4 July 1977 1298 HD 56429: A DOUBLE-LINED Am ECLIPSING BINARY D.M. Popper, J. Andersen 4 July 1977 1299 A SEARCH FOR LONG PERIOD CEPHEIDS IN NORMA A.L. Cabrera, J.C. Muzzio, G. Sanchez 5 July 1977 1300 IDENTIFICATION OF HV 5824 AND HV 5967 WITH PLANETARY NEBULAE N.
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