COMMISSION 27 OF THE I. A. U.

INFORMATION BULLETIN ON VARIABLE STARS

Nos. 1601-1700

1979 May - 1979 November

EDITOR: B. SZEIDL, KONKOLY OBSERVATORY

1525 BUDAPEST, Box 67, HUNGARY

HU ISSN 0374-0676

CONTENTS

1601 ON THE VARIABILITY OF HD 66194 AND OF HD 101158

M.J. Stift

10 May 1979

1602 OBSERVATIONS OF CI Cyg IN 1977-78

T.S. Belyakina

11 May 1979

1603 VX PUPPIS - A PUZZLE

D. Hoffleit

14 May 1979

1604 STARSPOTS ON THE RED DWARF GLIESE 490 A

B.R. Pettersen

15 May 1979

1605 TWO STARS NAMED KY AQUILAE

D. Hoffleit

15 May 1979

1606 IMPROVED PERIODS FOR VARIABLES IN NGC 5897

A. Wehlau, H.S. Hogg

15 May 1979

1607 PHOTOELECTRIC MINIMA AND NEW LIGHT ELEMENTS OF W UMa

Z. Tunca, O. Tumer, S. Evren

16 May 1979

1608 PREDISCOVERY LIGHTCURVE OF NOVALIKE OBJECT KUWANO IN VULPECULA

W. Wenzel

18 May 1979

1609 COMMENTS ON THE VARIABILITY OF HD 219018, COMPARISON STAR TO SZ Psc

J.D. Fernie

18 May 1979

1610 PHOTOELECTRIC OBSERVATIONS OF THE 1946 OUTBURST OF THE RECCURENT

NOVA T CORONAE BOREALIS

K.C. Gordon, G.E. Kron

18 May 1979

1611 DISCOVERY OF A PERIOD IN THE SYMBIOTIC STAR AG DRACONIS

L. Meinunger

28 May 1979

1612 SPIKE FLARES OF UV CETI

A.H. Jarrett, J. van Rooyen

28 May 1979

1613 REVISED PHOTOMETRIC ELEMENTS OF AY Cam

L. Milano, G. Russo

28 May 1979

1614 IU AURIGAE: THE ORBITAL INCLINATION CONTINUES TO INCREASE

J.A. Eaton

30 May 1979

1615 HD 200925, A NEW SHORT PERIOD VARIABLE STAR

S.F.G. Bedolla, J.H. Pena

31 May 1979

1616 FLARE STARS IN THE COMA CLUSTER REGION

L.K. Erastova

31 May 1979

1617 ON THE DECREASING PERIOD AND ASYMMETRIC LIGHT CURVE OF RT SCULPTORIS

H.W. Duerbeck, M.T. Karimie

1 June 1979

1618 COMPARISON STAR ADJUSTMENTS FOR THE CEPHEID EU Tau

A.A. Henden

5 June 1979

1619 PHOTOELECTRIC MINIMA OF RZ CASSIOPEIAE

C.R. Chambliss, J.J. Butz, E.L. Simpson

7 June 1979

1620 PHOTOELECTRIC OBSERVATIONS OF THE FLARE STAR YZ CMi IN 1974, 1975

M.E. Contadakis, G. Kareklidis, L.N. Mavridis, D.C. Stavridis

11 June 1979

1621 FAINT VARIABLE IN THE FIELD OF NGC 6397

E. Budding, C. Henshaw

12 June 1979

1622 TT Ari

F. Mardirossian, M. Mezzetti, M. Pucillo, P. Santin, G. Sedmak,

B. Cester, G. Giuricin

12 June 1979

1623 THE PERIOD VARIABILITY OF SX CASSIOPEIAE

E.F. Guinan, S. Tomczyk

14 June 1979

1624 SEMI-REGULAR VARIABLE STAR VII IN M13

R. Russev, T. Russeva

18 June 1979

1625 PHOTOMETRIC VARIABLE STARS IN THE FIELD OF OPEN CLUSTERS

J.J. Claria, L.A. Escosteguy

20 June 1979

1626 FLARE STAR OBSERVATIONS IN THE PLEIADES REGION

H.S. Chavushian, I. Jankovics

21 June 1979

1627 FLARE STAR OBSERVATIONS IN THE PRAESEPE REGION

I. Jankovics, H.S. Chavushian, N.D. Melikian

21 June 1979

1628 FLARE STARS IN ORION

H.S. Chavushian, N.D. Melikian, L.V. Mirzoyan, I. Jankovics

21 June 1979

1629 NEW FLARE STARS IN THE NGC 7000 REGION

H.S. Chavushian, N.D. Melikian, I. Jankovics

21 June 1979

1630 A NOTEWORTHY STAR IN SERPENS

J.A. Stepanian

21 June 1979

1631 PHOTOELECTRIC MINIMA OF FIVE ECLIPSING BINARIES IN CASSIOPEIA AND

PEGASUS

T.E. Margrave

25 June 1979

1632 PRIMARY MINIMUM AND NEW EPHEMERIS OF TT Hya

Z. Kviz

25 June 1979

1633 B,V OBSERVATIONS OF NOVA CYGNI 1978 (V1668 Cyg)

U. Hopp

29 June 1979

1634 A NOTE ON THE REVISED PHOTOMETRIC ELEMENTS OF THE R CMa SYSTEMS

A. Gimenez

2 July 1979

1635 ADDITIONAL IDENTIFICATION OF VARIABLE STARS IN A GENERAL

CATALOGUE OF COOL CARBON STARS

J.H. Baumert

2 July 1979

1636 Z ANDROMEDAE: LONG TIME SCALE VARIATION OF Halpha DURING

QUIESCENT PHASE

A. Altamore, G.B. Baratta, R. Viotti

3 July 1979

1637 B,V OBSERVATIONS OF V1057 CYGNI

U. Hopp, M. Kiehl, S. Witzigmann

6 July 1979

1638 ON THE PERIOD AND VELOCITY CURVE OF THE Beta CEPHEI STAR HR 6684

C.T. Bolton

10 July 1979

1639 TX SCUTI - A MYSTERY SOLVED

Dorrit Hoffleit

12 July 1979

1640 INFRARED OBSERVATIONS OF LR Sco, AN RCB STAR

B.S. Carter, G. Roberts, M.W. Feast

16 July 1979

1641 OBSERVATIONS OF V645 Cen

A.H. Jarrett, J. van Rooyen

17 July 1979

1642 THE SECONDARY PERIOD OF RZ CEPHEI

F. Ficarrotta, C. Romoli

17 July 1979

1643 NEW LIGHT ELEMENTS FOR THE ECLIPSING BINARY XZ CMi

A. Gimenez, V. Costa

20 July 1979

1644 NOUVELLES ETOILES VARIABLES OU SUSPECTES DE GRANDE PARALLAXE

M. Petit

23 July 1979

1645 POSSIBLE HETEROGENEITY OF THE Delta Sct COMPLEX

P. Nikolova, G. Momchev, A. Nikolov

24 July 1979

1646 TWO VARIABLE STARS IN THE SOUTHERN COALSACK REGION

S. Waldhausen, R.E. Martinez

26 July 1979

1647 PHOTOELECTRIC OBSERVATIONS OF u Her

P. Rovithis, H. Rovithis-Livaniou

26 July 1979

1648 PHOTOELECTRIC PHOTOMETRY OF 65 UMa (HR 4560)

A. Gimenez, J.A. Quesada

27 July 1979

1649 FURTHER EXAMINATION OF THE EQUATIONS FOR THE TIMES OF MAXIMUM

LIGHT FOR SX PHOENICIS

D.W. Coates, L. Halprin, K. Thompson

30 July 1979

1650 A NEW LATE TYPE VARIABLE WITH H AND K EMISSION

O.J. Eggen

31 July 1979

1651 OPTICAL SPECTRUM OF UV CAS

R. Nesci, F. Zavatti

31 July 1979

1652 VX PUPPIS - THE PUZZLE RESOLVED?

R.S. Stobie, L.A. Balona

31 July 1979

1653 PHOTOELECTRIC OBSERVATIONS OF THE FLARE STAR EV Lac IN 1974

M.E. Contadakis, G. Kareklidis, L.N. Mavridis, A.C. Tsioumis

1 August 1979

1654 PHOTOELECTRIC OBSERVATIONS OF THE FLARE STAR UV Cet IN 1974, 1975

M.E. Contadakis, G. Kareklidis, L.N. Mavridis, D. Stavridis, A.C.

Tsioumis

1 August 1979

1655 VARIABILITY OF CSV 6645

M. Huruhata

3 August 1979

1656 ON THE VARIABILITY OF THE RED GIANT v.Z. 238 = No. 138 IN M3

K. Olah, R.M. Russev

4 August 1979

1657 FURTHER OBSERVATIONS OF ET ANDROMEDAE

D.P. Hube

8 August 1979

1658 NEW RESEARCH FOR PERIODS OF Ap STARS OBSERVED AT THE ESO - III

P. Renson, J. Manfroid

8 August 1979

1659 COMMISSION 27 ARCHIVES OF UNPUBLISHED OBSERVATIONS OF VARIABLE

STARS: 1978/9 DATA

M. Breger

8 August 1979

1660 PHOTOELECTRIC PHOTOMETRY OF THE VARIABLE ST Com

I.Ph. Alania, O.P. Abuladze

10 August 1979

1661 ANOTHER OUTBURST OF THE UG? STAR V1454 CYGNI

A.R. Loser

27 August 1979

1662 STROMGREN y AND b LIGHT CURVES OF W UMa

E.F. Guinan, S.I. Najafi, F.Z. Noor

27 August 1979

1663 W VIRGINIS STARS WITH PROPERTIES OF RV TAURI STARS

G.E. Erleksova

27 August 1979

1664 LOW INTENSITY FLARES OF V645 Cen

A.H. Jarrett, J. van Rooyen

27 August 1979

1665 PHOTOMETRIC OBSERVATIONS OF RZ ERIDANI

D.B. Caton, J.P. Oliver

27 August 1979

1666 HO TELESCOPII: LIGHT ELEMENTS

R.F. Sistero, B.A. Candellero

27 August 1979

1667 VARIABILITY OF V1165 Aql IS QUESTIONED

L. Szabados

30 August 1979

1668 A SEARCH FOR V567 SCORPII

S. van den Bergh, F. Younger

5 September 1979

1669 RAPID Halpha EMISSION VARIABILITY IN V711 TAURI (= HR 1099)

B.W. Bopp

7 September 1979

1670 INFRARED LIGHT CURVES OF THE ECLIPSING BINARY VW CEPHEI

M. Lunel, S. Roux, J. Bergeat

10 September 1979

1671 COMMISSION No. 27 - WORKING GROUP ON FLARE STARS

P.B. Byrne, A.D. Andrews

12 September 1979

1672 Sh 2-71: NEW VARIABLE CENTRAL STAR OF A POSSIBLE PLANETARY NEBULA

L. Kohoutek

14 September 1979

1673 MOMENTS OF MINIMA OF AK Her

V.G. Karetnikov

18 September 1979

1674 SEVEN NEW VARIABLE STARS IN THE FIELD OF M101

G. Romano

19 September 1979

1675 SEMIREGULAR 58 DAYS VARIATION IN VV Cep

L. Baldinelli, G. Ghedini, S. Marmi

24 September 1979

1676 SPECTROGRAPHIC OBSERVATIONS OF THE SUSPECTED DELTA SCUTI VARIABLE

STAR 2 LYNCIS (HR 2238)

E. Antonello, M. Fracassini, L.E. Pasinetti

25 September 1979

1677 V794 AQUILAE - A NEW AN UMa-TYPE STAR?

L. Meinunger

26 September 1979

1678 COMPARISON STARS FOR AM Her

T.J. Moffett

26 September 1979

1679 OBSERVATIONS OF X PERSEI IN THE U B2 V1 COLOURS OF THE GENEVA

SYSTEM

E.L. van Dessel, M. Burger, C. de Loore, W. Packet, C. Vanbeveren

28 September 1979

1680 V810 CENTAURI

W. Eichendorf, B. Reipurth

1 October 1979

1681 INTRINSIC POLARIZATION IN XZ CEPHEI

M. Saute, M.T. Martel

3 October 1979

1682 PHOTOELECTRIC ECLIPSE TIMINGS FOR AI Dra, SV Cam AND W UMa

A.D. Mallama

5 October 1979

1683 PHOTOELECTRIC OBSERVATIONS OF THE NOVALIKE OBJECT IN VULPECULA

H.S. Mahra, S.C. Joshi, J.B. Srivastava, S.L. Dhir

9 October 1979

1684 PHOTOELECTRIC LIGHTCURVES AND PERIOD STUDIES OF CC CASSIOPEIAE AND

V448 CYGNI

P. Hartigan, R.P. Binzel

9 October 1979

1685 EPOCHS OF MINIMUM LIGHT, SW LACERTAE

D.R. Faulkner, P.A. Basilico, B.B. Bookmyer

15 October 1979

1686 NEW ELEMENTS FOR VW CEPHEI

C. Cristescu, G. Oprescu, M.D. Suran

16 October 1979

1687 PERIOD CHANGES OF RT PERSEI

I. Todoran

16 October 1979

1688 NEW ELEMENTS FOR AP LEONIS

C. Cristescu, G. Oprescu, M.D. Suran

16 October 1979

1689 THE LIGHT VARIATIONS OF BINARY Be STAR AND HD 187399

K. Pavlovski, P. Harmanec, J. Horn, P. Koubsky, F. Zdarsky, S. Kriz

17 October 1979

1690 CONFIRMATION OF SUSPECTED VARIABILITY IN HD 86590

D.S. Hall, C.A. Vaucher, H. Louth

17 October 1979

1691 A PROBABLE ECLIPSING VARIABLE IN VIRGO

A.W. Harris

17 October 1979

1692 PHOTOELECTRIC OBSERVATIONS OF WW Dra

M. Mezzetti, F. Predolin, B. Cester, G. Giuricin, F. Mardirossian

19 October 1979

1693 THE DEVELOPMENT OF THE 1978 OUTBURST OF WZ SAGITTAE

N. Brosch

22 October 1979

1694 PHOTOELECTRIC TIMES OF MINIMA FOR SELECTED ECLIPSING BINARIES AND

UPDATED EPHEMERIDES

T.E. Margrave

23 October 1979

1695 LIGHT VARIATIONS OF THE Ap STAR HD 164429

F.A. Catalano, A. Magazzu, G. Strazzulla

23 October 1979

1696 FLARE STARS OBSERVATIONS IN THE PLEIADES REGION

J. Kelemen, I. Jankovics

25 October 1979

1697 SPECTROSCOPIC AND PHOTOMETRIC VARIATION OF Kappa Cas

E.W. Elst

26 October 1979

1698 ON THE VARIABILITY OF THE SUSPECTED BETA CEPHEI STARS V351, V356,

V357 Per

H.S. Mahra, V. Mohan

29 October 1979

1699 PHOTOGRAPHIC OBSERVATIONS OF OLD NOVAE II.

U. Hopp

31 October 1979

1700 BH CENTAURI

R.F. Sistero, B.S. Candellero, A. Grieco

5 November 1979