GSa SP-310 August 1990 EVOLUTION IN ASTROPHYSICS IUE astronomy in the era of new space missions Proceedings of an International Conference held in Toulouse, France 29 May - 1 June 1990 Organised by European Space Agency (ESA) National Aeronautics and Space Administration (NASA) Science and Engineering Research Council (SERC) Centre National d'Etudes Spatiales (CNES) Co-sponsored by Universite Paul Sabatier UB/TIB Hannover 89 100 890 407 , „ ^ , „ ESA Conference Secretary |||||||||| I PIavpI F9A Vikna 111 III 1 U. wldVol, LOn Vllo{Jct HIHllfllllliliffl RN 2087(310) a Conference Editor E.J. Rolfe, ESA Publications Division european space agency / agence spatiale europeenne 8 - 10 rue Mario-Nikis, 75738 Paris Cedex 15, France Ill Contents Opening address xiii Luton, J.M. Opening address xv Wamskeker, W. REVIEW PAPERS Comparative study of cometology from IUE observations 3 Festou, M.C. Pre-main sequence stars 11 Catala, C. & Bertout, C. Herbig-Haro objects 23 Bohm, K.H. Luminous hot variables 33 Wolf, B. Abundances in chemically peculiar and normal A-type stars 39 Faraggiana, R. & Gerbaldi, M. Chromospheres of cool stars 49 Harper, G.M. Stellar activity cycles 61 Dravins, D. Winds in cool stars 65 Baade, R. What we learn from eclipsing binaries in the ultraviolet 73 Guinan, E.F. Twelve years in the life of symbiotic stars 87 Nussbaumer, H. IUE observations of dwarf novae 95 Naylor, T. The impact of IUE on studies of the Nova outburst: 1986-1990 101 Starrfield, S. UV observations of X-ray binaries 109 Raymond, J.C. IV CONTENTS Emission line nebulae in the Magellanic Clouds 117 Dufour, R.J. The ultraviolet saga of SN 1987A 125 Gilmozzi, R. Dynamics of the Interstellar Medium 133 Jenkins, E.B. Are quasars different? 143 Carswell, R.F. Experience with an heroic proposal: the NGC 5548 watch with IUE 147 Alloiri, D. The UV properties of normal galaxies 153 Longo, G. Star bursts and giant H II regions 159 Pagel, B.E.J. ESA's 'Horizon 2000' Programme 167 Bonnet, R.M. The astrophysics program at the National Aeronautics and Space Administration (NASA) 175 Pellerin, C.J. The space research programme of Japan 183 Tanaka, Y. The Extreme Ultraviolet Explorer 189 So wye/-, S. & Malina, R.F. The Lyman Far-Ultraviolet Spectroscopic Explorer mission 199 Sonneborn, G. IUE final archive 207 Nichols-Bohlin, J. POSTER PAPERS Session 1 Normal Stars & the Solar System Interpretation of Comet Halley's Dust Continuum in the UV 217 Walk's, M.K. & Wickramasinghe, N.C. IUE observations of Comet Okazawaki-Levy-Rudenko (1989r) 221 Wallis, M.K., Zamecki, J.C. & Deshpande, S.P. Observations of Comet Brorsen-Metcalf and comparisons with Halley 223 Wallis, M.K., Hughes, D.W. & Williams, LP. A search for Beta Pictoris analogs 227 Cheng, K.P., Grady, C,A. & Bruhweiler, F.C. Multifrequency behaviour of the T-Tauri star RU Lupi 231 Giovannelli, F., Rossi, C, Errico, L, Vittone, A.A., Bisnovatyi-Kogan, G.S., Kurt, V.G., Sheffer, E.K. & Lamzin, S.A. CONTENTS V Low-resolution ultraviolet spectra of Herbig Ae-Be stars 235 Hack, M. & Boehm, C. Preliminary interpretation of the Mgll variability in L2 Puppis 241 Brugel E.W., Willson, L.A. & Bowen, G. Spectral classification of B Stars in the ultraviolet 247 Rountree, J. & Sonneborn, G. A comparative study of B and Be stars in the UV: New evidence of a near-equatorial origin of the Si IV 1400 and C IV 1550 features in Be stars 251 Selvelli, P.L & Monai, S. Atlas of far UV and optical spectra of Be stars 255 Doazan, V., Sedmak, G. & Barylak, M. & Rusconi, L. Short-term FUV flux variability and phase-dependent winds in Be stars 257 Pefers, G.J., Percy, J,R., Henrichs, H.F., Gies, D.R. & McDavid, D. The features at 130.55 and 130.95 nm in B stars 261 Caste///, F. & Singh, J. Rotational and rapid flux variations of 21 Com in the ultraviolet 267 Megessier, C. & Monier, R. The ultraviolet variations of 78 Vir 271 Monier, R. Is the magnetic Ap star 21 Per an eclipsing binary? 273 Megessier, C. & Artru, M-C. Nitrogen abundances in chemically peculiar stars 275 Lanz, T. & Artru, M-C. Carbon and nitrogen abundances in HgMn stars 279 Smith, K.C. & Dworetsky, M.M. The very high rotators in the late-B and early-A stars: shell stars with Si IV and C IV features 283 Freire Ferrero, R., Bruhweiler, F. & Grady, C. The Lambda Boo stars 287 Faraggiana, R. & Gerbaldi, M. New results on the UV variability of the WR stars HD 50896 and HD 92163 289 St-Louis, N., Willis, A.J., Smith, L.J., Garmany, CD. & Conti.P.S. CNO abundance variations in type-l planetary nebulae 293 Dufour, R.J., Mulrooney, M.L. & Walter, D.K. Implications on stellar structure/evolution of the observed association between energy/mass fluxes and multi- regional atmospheric structure 297 Doazan, V, & Thomas, R.N. Continua of B supergiants in the LMC 303 Fitzpatrick, E.L. On the disappearance of Ol in some high-luminosity cool stars 307 Carpenter, K.G., Norman, D., Robinson, R., Fernandez-Villacanas, J.L., Jordan, C. & Judge, P. Possible very extended envelopes around red supergiants 311 Suso, J, Querci, F., Talavera, A., Querci, M. & Fabregat, J. The chromospheric Lyman alpha core emission of Altair 315 Freire Ferrero, R„ Catalano, S„ Gouttebroze, P. & Marilli, E. VI CONTENTS An IUE study of the chromospheres and transition regions of F giant stars 319 Drake, SA & Simon, T The distant future of solar activity - A case study of Beta Hydn 323 T L J Dravins, D, Unde, P, Ayres, R, Fredga, K, Gahm, G, bndegren, , Linsky, L, Monsignon-Fossi, B, Nordlund, A, Simon, T, Vandenberg, D & Wallinder, F A high-resolution atlas of Mg II profiles 325 £wa/d, R, & Nichols-Bohlm, J & Kondo, Y The onset of cool stellar winds indicated by circumstellar Mg II absorption components 331 Hunsch, M Chromospheric variation and phase relation in M giants 335 Johnson, H R, Eaton, J A & Cadmus, R R Carbon and nitrogen abundances in the supergiants HD 93840 and Zeta Per 337 Massa, D, Altner, B, Wynne, D & Lamers, H J The intrinsic H-l Lyman-Alpha line profiles of late-type stars 341 Neff, J E, Landsman, W B, Bookbinder, J A & Linsky, J L Supergiant chromospheres and cool coronae at the transition from cool to hot circumstellar matter 345 Schroder, K -P The long term monitoring of the spectrophotometnc IUE standard stars 349 P6rez, M R, Oliversen, N, Garhart, M & Teays, T Accurate differential photometry using the Fine Error Sensor 349 Pike, CD & Wamsteker, W Session 2 Clusters, Binary Systems & Compact Objects The VV Cephei star KQ Puppis 359 Viotti, R, Rossi, C, Altamore, A, Baratta, G B, Fnedjung, M & Muratono, G The ultraviolet spectrum of FG Sge 363 Montesmos B A R & T , Cassatella, , Gonzalez-Riestra, Fernandez-Castro, Ultraviolet light curves of galactic and extra galactic classical CNO novae PW Vul, OS And, LMC 1988 nos 1 and 2 367 Austin, S, Starrfield, S, Saizar, P, Shore, SN & Sonneborn, G The spectral energy distributions of stellar generations evolution and comparison with cluster spectra 371 Barbaro, G & Olivi, FM Study of coronal and transition region structure in the contact binary 44i Boo through rotational modulation of the far UV spectra 375 B Barstow, M A , Bromage, G E & Holberg, J Multifrequency behaviour of the X-ray/Be system A 0535 + 26/HDE 245770 at the penoastron passage in March/April 1989 379 de A M, Giovannelli, F, Persi, P, Martino, D, Bartolini, C, Guarnien, , Piccioni, A, Teoderam, M, Burger, van Dessel, EL, Kurt, VG, Sheffer, EK, Waters, LB,Gonzalez Martinez-Pais, I, Gnedin, YN, Lanonov, V M, Shakovskaya, NI, Dapergolas, A & Kontizas, E Gas dynamics, accretion and evolution of Algols initial results for three representative systems 383 A E D G Gimenez, , Gonzalez-Riestra, R, Guinan, F, Kondo, Y, McCluskey, G E, Bradstreet, H, McCook, P, Dorren, J D, Johansson, S & Sahade, J CONTENTS vii IUE observations of the RS CVn-type binary <r2CrB 387 Hannikainen, D., Vilhu, 0., Huovelin, J., & Stern, R.A. Rayleigh scattering in symbiotic stars 393 Vogel, M. Properties of the central star of NGC 6826 397 Heap, S., Altner, B., Hubeny, I. & Bohannan, B. Correlated near-photospheric and stellar-wind variability in the 0 supergiant Lamda Cep 401 Henrichs, M., Gies, D., Kaper, L., Kudritzki, R., McDavid, D., Muschielok, B., Nichols-Bohlin, J., Voels, S. & Zwarthoed, G. Variability and velocity fields in Alpha Ori atmosphere 407 Joras, P. Orbital variability in the UV spectra of the massive X-ray binary HD 153919/4U1700-37 411 Kaper, L & Hammerschlag-Hensberge, G. & Takens, R.J. A statistical analysis of IUE spectra of dwarf novae and nova-like stars 415 la Dous, C. UV orbital variability in the intermediate polar H2215-086 419 De Martino, D., Mouchet, M., & Mukai, K. Cataclysmic variables with anomalous UV emission line spectrum 423 Mouchet, M., Bonnet-Bidaud, J.M., Hameury, J.M. & Acker, A. Ultraviolet continuum in solar and dMe star flares 427 Phillips, K.J.H., Bromage, G.E. & Doyle, J.G. Long- and short-timescale variability of magnetic activity on the BY Dra star BD +26°730 431 Saar, S.H., Golub, L, Bopp, B., Herbst, W., & Huovelin, J. PW Vul: A classical nova with nearly solar abundances 435 Saizar, P., Starrfield, S., Austin, G., Ferland, G„ Wagner, R.M., Truran, J.W., Sonneborn, G., Kenyon, S.J., Sparks, W.M., Williams, R.E., Wade, R. & Gehrz, R.D. Nova LMC 1990 No. 1: The first extragalactic neon nova 439 Sonneborn, G., Shore, S.N.