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Commission 27 of the I.A.U. Information Bulletin On COMMISSION 27 OF THE I.A.U. INFORMATION BULLETIN ON VARIABLE STARS Nos. 401-500 1969 November – 1970 December EDITORS: L. DETRE AND B. SZEIDL, KONKOLY OBSERVATORY 1525 BUDAPEST, Box 67, HUNGARY CONTENTS 0401 PHOTOELECTRIC OBSERVATIONS OF EV Lac K.L. Maslennikov, N.I. Shakhovskaya 10 November 1969 0402 V-OBSERVATIONS AND LIGHT ELEMENTS OF OMEGA Cen V78 R.F. Sistero, C.R. Fourcade, J.R. Laborde 11 November 1969 0403 OBSERVATIONS OF EV Lac DURING THE INTERNATIONAL CAMPAIGN SEPTEMBER 4-19, 1969 S. Cristaldi, M. Rodono 12 November 1969 0404 OBSERVATIONS OF UV Cet DURING THE INTERNATIONAL CAMPAIGN OCTOBER 3-18, 1969 S. Cristaldi, M. Rodono 12 November 1969 0405 UV Cet K. Osawa, T. Noguchi, T. Okada, K. Ichimura, E. Watanabe, K. Okida 19 November 1969 0406 FLARE ACTIVITY OF UV Cet A.H. Jarrett, J.P. Eksteen 23 November 1969 0407 VISUAL OBSERVATIONS OF THE FLARE STAR EV LACERTAE A.D. Andrews 25 November 1969 0408 THE VARIABILITY OF BV 516 C.R. Chambliss NOVA IN SAGITTARIUS M.P. Candy 27 November 1969 0409 ETOILES VARIABLES NOUVELLES AU NORD DE BETA TAURI A. Brun 21 December 1969 0410 PHOTOELECTRIC OBSERVATIONS OF EV Lac P.F. Chugainov, N.I. Shakhovskaya 30 December 1969 0411 PHOTOELECTRIC OBSERVATIONS OF UV Cet P.F. Chugainov, N.I. Shakhovskaya 30 December 1969 0412 FLARE ACTIVITY OF UV CETI A.H. Jarrett, J.P. Eksteen 7 January 1970 0413 3 Hya = HD 72968 R. Steinitz, D.M. Pyper 9 January 1970 0414 ELEMENTS OF BRIGHT SOUTHERN CEPHEIDS R.S. Stobie 14 January 1970 0415 HIGH-FREQUENCY STELLAR OSCILLATIONS. III. A BRIEF REPORT B.M. Lasker, J.E. Hesser 21 January 1970 0416 PROGRAMME OF COOPERATIVE OBSERVATIONS OF FLARE STARS FOR 1970 A.D. Andrews, P.F. Chugainov 22 January 1970 0417 V362 Her H. Busch NP Her H. Busch, K. Haussler 23 January 1970 0418 AUTOCORRELATION ANALYSIS OF DQ Her AND RW Tri A.F. Pugach 23 January 1970 0419 PHOTOELECTRIC MINIMA OF ECLIPSING VARIABLES C. Popovici 19 February 1970 0420 THE 3323 VARIABLE STARS IN OR PROJECTED ON THE MAGELLANIC CLOUDS DOWN TO -0.8 ABSOLUTE MAGNITUDE S. Gaposhkin 20 February 1970 0421 OBSERVATIONS PHOTOELECTRIQUES DE HD 125248 H.M. Maitzen 26 February 1970 0422 ON FOUR VARIABLE STARS IN THE GLOBULAR CLUSTER M2 B. Kukarkin 4 March 1970 0423 PHOTOELECTRIC OBSERVATIONS OF THE FLARE STAR YZ CMi S. Cristaldi, M. Rodono 20 March 1970 0424 THE HIGH VELOCITY VARIABLE QT CrA M.W. Feast 31 March 1970 0425 PHOTOGRAPHIC OBSERVATIONS OF UV CETI L.N. Mosidze, A.D. Chuadze 31 March 1970 0426 FLARES OF YZ CMi OBSERVED AT OKAYAMA, 31 JANUARY TO 13 FEBRUARY, 1970 K. Osawa, K. Ichimura, T. Noguchi, E. Watanabe, T. Okada, K. Okida 6 April 1970 0427 LIST OF PROBABLE DELTA SCUTI STARS M.S. Frolov 12 April 1970 0428 THE SPECTRUM OF NOVA SERPENTIS 1970 U.K. Gehlich, J. Tremko, R. Wehmeyer 12 April 1970 0429 NOVA SERPENTIS K. Osawa 14 April 1970 0430 FREQUENCE DES SURSAUTS DES ETOILES DU TYPE UV CETI M. Petit 16 April 1970 0431 ETOILES NAINES ROUGES VARIABLES M. Petit 19 April 1970 0432 AD Leo K. Osawa, K. Ichimura, T. Noguchi, E. Watanabe, T. Okada, K. Okida 21 April 1970 0433 PHOTOMETRY OF AD Leo A.H. Jarrett, J.P. Eksteen 28 April 1970 0434 FLARE PHOTOMETRY OF UV CETI A.H. Jarrett, J.P. Eksteen 28 April 1970 0435 THE MAGNETIC VARIABLE BETA CrB C. Bartolini, P. Battistini, R. Pecorari 30 April 1970 0436 KM CASSIOPEIAE L.R. Wackerling 11 May 1970 0437 A NOVA IN THE LARGE MAGELLANIC CLOUD D.J. MacConnell 11 May 1970 0438 PHOTOELECTRIC PERIOD FOR BV 346 R.C. Tate 4 June 1970 0439 PHOTOELECTRIC PATROL OF THE FLARE STAR BD +13d2618 S. Cristaldi, M. Rodono 5 June 1970 0440 NEW ELEMENTS FOR SS Ari W. Braune 10 June 1970 0441 PHOTOELECTRIC OBSERVATIONS OF FLARE STARS P.F. Chugainov, N.I. Shakhovskaya 29 June 1970 0442 FLARE ACTIVITY OF -32d16135, YZ CMi AND LPM 63 W.E. Kunkel 2 July 1970 0443 THE PERIOD OF TW DRACONIS FROM 1880 TO 1970 E. Pohl BD +28d838 A. Brun 3 July 1970 0444 HR 2989: A NEW DELTA SCUTI STAR J.R. Percy 6 July 1970 0445 TIME OF MINIMUM FOR WY HYDRAE A.U. Landolt 8 July 1970 0446 PHOTOELECTRIC TIME OF MINIMUM FOR AI CRUCIS A.U. Landolt 8 July 1970 0447 LIGHT VARIATIONS OF BD +39d2193 R.L. Walker 10 July 1970 0448 A NOVA IN THE LARGE MAGELLANIC CLOUD, BV 1261 J. Sievers 10 July 1970 0449 PHOTOGRAPHIC LIGHT ELEMENTS OF TX Cnc K.P. Tritton, R.A. Brett 15 July 1970 0450 FLARE ACTIVITY OF UV CETI F.M. Bateson FLARE ACTIVITY OF UV CETI F.M. Bateson, B.F. Marino, W.S.G. Walker 17 July 1970 0451 YZ CANIS MINORIS F.M. Bateson, B.F. Marino, W.S.G. Walker YZ CANIS MINORIS F.M. Bateson V645 (PROXIMA) CENTAURI F.M. Bateson, C. Rowe, R. Austin, M. Clark 17 July 1970 0452 NOVA SAGITTARII 1969, BV 1262 J.R. Sievers 18 July 1970 0453 PHOTOELECTRIC TIMES OF MINIMA OF RR CENTAURI R.F. Sistero, M.E. Castore de Sistero 20 July 1970 0454 CONFIRMATION OF A SUSPECTED VARIABLE IN COMA BERENICES M.J. Keyes 22 July 1970 0455 CEPHEIDES DE FAIBLE AMPLITUDE M. Petit 26 July 1970 0456 PHOTOELECTRIC MINIMA OF ECLIPSING BINARIES E. Pohl, A. Kizilirmak 26 July 1970 0457 AUTOCORRELATIVE ANALYSIS OF LIGHT OF DQ Her, UX UMa AND RW Tri F.I. Lukatskaya, A.F. Pugach 27 July 1970 0458 NOTE ON KM Cas C.B. Stephenson 1 August 1970 0459 TWO SUPERNOVAE IN FAINT GALAXIES P. Notni, H. Oleak 26 August 1970 0460 UBV OBSERVATIONS OF NOVA SERPENTIS 1970 A.U. Landolt 27 August 1970 0461 COOPERATIVE OBSERVATIONS OF THE FLARE STAR V1216 Sgr R. Costa, S. Cristaldi, M. Rodono 28 August 1970 0462 FLARE ACTIVITY OF PROXIMA CENTAURI, 1969 W.E. Kunkel 1 September 1970 0463 A PHOTOELECTRIC STUDY OF BETA PEGASI K. Locher 2 September 1970 0464 PHOTOGRAPHIC OBSERVATIONS OF THE ECLIPSING VARIABLE HBV 434 = V1171 Cyg H. Bossen 10 September 1970 0465 VY CANIS MAJORIS - A UNIQUE VARIABLE (PRELIMINARY RESULTS) L.J. Robinson 11 September 1970 0466 JOINT OBSERVATIONS DURING SATELLITE X-RAY EXPERIMENTS R. Giacconi, H. Gursky, E. Kellogg, H. Tananbaum 30 September 1970 0467 REMARK ABOUT WZ Sge H. Brancewicz 30 September 1970 0468 A PERIOD CORRECTION FOR KP CYGNI M. Vogt 5 October 1970 0469 SYMBIOTIC STARS IN SAGITTARIUS EXAMINED FOR VARIABILITY D. Hoffleit 5 October 1970 0470 GRADIENT DIAGRAM FOR PULSATING VARIABLES I.G. Kolesnik 8 October 1970 0471 CLASSIFICATION OF PULSATING VARIABLES BY LIGHT GRADIENTS I.G. Kolesnik 8 October 1970 0472 PREOUTBURST OBSERVATIONS OF NOVA SCUTI 1970 L.J. Robinson, M. Harwood 14 October 1970 0473 PHOTOELECTRIC OBSERVATIONS CQ Cep T.A. Kartashova 24 October 1970 0474 ANOTHER VARIABLE WITH CHANGING PERIOD D. Hoffleit 25 October 1970 0475 PHOTOELECTRIC OBSERVATIONS OF NOVA SAGITTARII 1969 F.M. Bateson 26 October 1970 0476 PERIOD-CONTROL FOR ECLIPSING BINARIES BV 1161, 1162, 1209 AND 1214 W. Strohmeier 26 October 1970 0477 NEW BRIGHT SOUTHERN VARIABLE STARS S. Shaw, J. Sievers 26 October 1970 0478 POSSIBLE FLARE STAR NEAR M31 S. van den Bergh 27 October 1970 0479 UV Ceti K. Osawa, K. Ichimura 28 October 1970 0480 57TH NAME-LIST OF VARIABLE STARS B.V. Kukarkin, P.N. Kholopov, N.B. Perova 30 October 1970 0481 RECENT OBSERVATIONS ON THE FLARE STAR V1216 SAGITTARII A.H. Jarrett 31 October 1970 0482 UBV OBSERVATIONS OF THREE CEPHEIDS E.F. Milone 2 November 1970 0483 HD 72754 - A NEW Be VARIABLE STAR OF BETA LYRAE TYPE A.D. Thackeray, J.B. Alexander, P.W. Hill 5 November 1970 0484 FLARES OF UV CETI A.H. Jarrett, J.P. Eksteen 5 November 1970 0485 PHOTOELECTRIC OBSERVATIONS OF EV Lac DURING THE INTERNATIONAL CAMPAIGN 23 AUGUST - 9 SEPTEMBER 1970 P.F. Chugainov, N.I. Shakhovskaya, K.L. Maslennikov 7 November 1970 0486 PHOTOELECTRIC OBSERVATIONS OF UV Cet DURING THE INTERNATIONAL CAMPAIGN 22 SEPTEMBER - 9 OCTOBER 1970 P.F. Chugainov, G.N. Alekseev 7 November 1970 0487 FLARES OF AC +8d142 - 393 N.I. Shakhovskaya, K.L. Maslennikov 8 November 1970 0488 PHOTOELECTRIC OBSERVATIONS OF EV Lac V.S. Oskanian 11 November 1970 0489 ON THE VARIABILITY OF THE CARBON STARS CIT 5 AND CIT 13 Z. Alksne, A. Alksnis 19 November 1970 0490 THE SECONDARY PERIOD OF THE RRab STAR SZ HYDRAE S. Kanyo 21 November 1970 0491 VARIABLE STAR COLLOQUIUM IN BAMBERG 31 AUGUST - 3 SEPTEMBER 1971 G.H. Herbig 28 November 1970 0492 FLARE STAR OBSERVATIONS DURING SATELLITE X-RAY EXPERIMENTS T.C. Weekes 29 November 1970 0493 NEW FLARES IN PLEIADES L.G. Balazs, R.A. Vardanian 7 December 1970 0494 NOVA SAGITTARII 1970 = SVS 1728 V. Arhipova, O. Dokuchaeva 8 December 1994 0495 THE OPTICAL POLARIZATION OF NOVA Del 1967 J. Arsenijevic, K. Alexsandar 9 December 1970 0496 RESULTS OF THE STUDY OF 3806 VARIABLES IN AND ABOUT THE MAGELLANIC CLOUDS S. Gaposhkin 12 December 1970 0497 COOPERATIVE OBSERVATIONS OF EV Lac K.A. Grigorian, M.A. Eritsian 14 December 1970 0498 PHOTOELECTRIC OBSERVATIONS OF AD Leo DURING THE 1970 MARCH 1-15 INTERNATIONAL PATROL S. Cristaldi, M. Rodono 18 December 1970 0499 SOME PROBABLY REAL AND SOME PROBABLY SPURIOUS FLARES OF AD Leo R.H. Herr 22 December 1970 0500 A NEW LARGE AMPLITUDE ECLIPSING STAR L.J. Robinson, M. Harwood, V.M. Swain 28 December 1970 .
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