Title: Four Decades of Massive Star Research - A Scientific Meeting in Honor of Anthony J. Moffat
Volume: 465 Year: 2012 View this Volume on ADS
Editors: L. Drissen, C. Robert, N. St-Louis, A. F. J. Moffat


Auberge du Lac Taureau, Québec, Canada
11–15 July 2011

These are the proceedings of a meeting held to celebrate four decades of contributions from Professor Anthony F. J. Moat to massive-star research. Since his first papers on open clusters in the early 1970’s, Tony’s research interests have expanded in many directions to cover a multitude of aspects of massive stars, from the nature of their winds to their presence in distant galaxies. All along his very productive career, Tony has worked with a very large number of researchers around the world. A fair number of them attended this meeting, old colleagues and young companions. This field of research is still very exciting and full of surprises!

The meeting encompassed the following main subjects on which Tony Moat has worked during his career: pulsations, rotation and magnetic fields, mass loss and clumping, the most luminous stars, massive star
wind models, massive binaries, young open star clusters, massive star formation, and massive star surveys.

Nine invited reviews, 51 contributed talks and three dozen posters were presented by observers and theoreticians. Lively discussions, which were held aer each topical session, were recorded and are included in these proceedings.
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Paper Title Page Authors
Front Matter   
Front Cover Drissen, L.; Robert, C.; St-Louis, N.; Moffat, A. F. J.
Front Matter 1 Drissen, L.; Robert, C.; St-Louis, N.; Moffat, A. F. J.
Conference Photo 2 Drissen, L.; Robert, C.; St-Louis, N.; Moffat, A. F. J.
Session I. Pulsations   
Pulsations of Massive Stars 3 Moffat, A. F. J.
CoRoT Observations of O Stars: Diverse Origins of Variability 13 Blomme, R.; Briquet, M.; Degroote, P.; Mahy, L.; Aerts, C.; Cuypers, J.; Godart, M.; Gosset, E.; Hareter, M.; Montalban, J.; Morel, T.; Nieva, M. F.; Noels, A.; Oreiro, R.; Poretti, E.; Przybilla, N.; Rainer, M.; Rauw, G.; Schiller, F.; Simon-Diaz, S.; Smolders, K.; Ventura, P.; Vučković, M.; Auvergne, M.; Baglin, A.; Baudin, F.; Catala, C.; Michel, E.; Samadi, R.
Macroturbulent Broadening: A Single Snap-Shot Approach to Investigate Pulsations in Massive Stars? 19 Simón-Díaz, S.; Castro, N.; Herrero, A.; Aerts, C.; Puls, J.; Markova, N.
Pulsational Mass Loss in Luminous Blue Variables 25 Lovekin, C. C.; Guzik, J. A.
General Discussion - Session I 28 Kaper, L.
Session II. Rotation and Magnetic Fields   
Magnetism, Rotation, and Large-Scale Wind Variability of O-Type Stars 33 Wade, G. A.
The Incidence of Magnetic Fields in Massive Stars: An Overview of the MiMeS Survey Component 42 Grunhut, J. H.; Wade, G. A.; MiMeS Collaboration
Magnetospheres of Massive Stars Across the EM Spectrum 48 Petit, V.; Owocki, S. P.; Oksala, M. E.; MiMeS Collaboration
Are Magnetic OB Stars More Prone to Mixing? Still an Unsettled Issue 54 Morel, T.
3-D Simulations of Magnetic Massive Star Winds 60 ud-Doula, A.
Challenges for Understanding the Evolution of Massive Stars: Rotation, Binarity, and Mergers 65 de Mink, S. E.; Brott, I.; Cantiello, M.; Izzard, R. G.; Langer, N.; Sana, H.
Mass Loss in 2-D Stellar Models 74 Lovekin, C. C.
Observations of Boron in Rapidly Rotating Early-B Stars 80 Proffitt, C. R.; Lennon, D.
Time-Series of Linear Spectropolarimetric Observations of Wolf-Rayet Stars: Results for WR 134 86 St-Louis, N.; de la Chevrotière, A.; Moffat, A. F. J.
Circular Polarization of the Wolf-Rayet Star EZ CMa 92 de la Chevrotière, A.; St-Louis, N.; Moffat, A. F. J.
PAVO@CHARA High Angular Resolution Observations of Rapid Rotators 95 Maestro, V.; Huber, D.; Ireland, M.; Tuthill, P.
What Sets the Rotation Rates of Massive Stars? 98 Rosen, A. L.; Krumholz, M. R.; Ramirez-Ruiz, E.
Magnetic Fields of Slowly Pulsating B Stars and β Cep Variables: Comparing Results from FORS1/2 and ESPaDOnS 101 Shultz, M.; Wade, G. A.; Grunhut, J.; Hanes, D.; Bagnulo, S.; Landstreet, J. D.; MiMeS Collaboration
The Search for Weak or Complex Magnetic Fields in Blue Supergiant Stars 105 Shultz, M.; Wade, G. A.; Grunhut, J.; Hanes, D.; MiMeS Collaboration
A Survey of Be Star Circumstellar Disks Using the CHARA Array Long Baseline Interferometer 108 Touhami, Y.; Gies, D. R.; Schaefer, G. H.; Richardson, N. D.; McAlister, H. A.; Ridgway, S. T.; ten Brummelaar, T. A.; Goldnger, P. J.; Sturmann, L.; Sturmann, J.; Turner, N. H.; Farrington, C. D.
General Discussion - Session II 111 Owocki, S.
Session III. Mass Loss and Clumping in Hot StellarWinds   
The Nature and Consequences of Clumping in Hot, Massive Star Winds 119 Sundqvist, J. O.; Owocki, S. P.; Puls, J.
Validity of Clumping Approximations for Mass-Loss Rates Determination 128 Kubát, J.; Šurlan, B.
3-D Monte Carlo Radiative Transfer Calculation of Resonance Line Formation in the Inhomogeneous Expanding Stellar Wind 134 Šurlan, B.; Hamann, W.-R.; Kubát, J.; Oskinova, L.; Feldmeier, A.
Moffat Clumps as the Source of X-Rays from Single WR Stars 140 Gayley, K. G.
X-Ray Spectroscopy of the O2 If* Star HD 93129A 147 Cohen, D. H.
The Physical Basis of the LX = Lbol Empirical Law for O-Star X-Rays 153 Owocki, S. P.; Sundqvist, J. O.; Cohen, D. H.; Gayley, K. G.
Spectroscopy and Interferometry of Luminous Blue Variables 160 Richardson, N. D.; Gies, D. R.; Morrison, N. D.; Schaefer, G.; ten Brummelaar, T.; Monnier, J. D.; Parks, J. R.
Large-Scale Variability of Single Galactic Wolf-Rayet Stars: Using Gemini Poor Weather Time to Improve the Survey 166 Chené, A.-N.; St-Louis, N.; Moffat, A. F. J.
Short-Term Spectroscopic Variability of WC9 Stars 169 Desforges, S.; St-Louis, N.; Chené, A.-N.
Macroclumping, Magnetic Fields, and X-Rays in Massive Stars 172 Oskinova, L.; Hamann, W.-R.; Todt, H.; Sander, A.
The Mass-Loss Rate of Massive Stars in Low-Metallicity Galaxies IC 1613, WLM, and NGC 3109 176 Tramper, F.; Sana, H.; de Koter, A.; Kaper, L.
General Discussion - Session III 179 Hillier, J.
Session IV. The Most Luminous Stars   
The Most Massive Stars 187 Schnurr, O.
Very Massive Stars and the Eddington Limit 196 Crowther, P. A.; Hirschi, R.; Walborn, N. R.; Yusof, N.
Massive Stars Near the Eddington Limit: Mass Loss and Envelope Inflation 202 Gräfener, G.; Vink, J. S.; Owocki, S. P.
Wind Models for Very Massive Stars in the Local Universe 207 Vink, J. S.; Bestenlehner, J. M.; Gräfener, G.; de Koter, A.; Langer, N.
LBV Nebulae as Tracers of Stellar Instabilities 213 Weis, K.
General Discussion - Session IV 220 Smith, N.
Session V. Massive StarWind Models   
Some Challenges to Massive Star Theories 227 Herrero, A.; García, M.; Urbaneja, M. A.
Improving the Fundamental Accuracy of O-Star Parameters and Abundances 237 Hillier, D. J.; Bouret, J.-C.; Martins, F.
WC Stars and their Role in the Life Cycle of Massive Stars 243 Sander, A.; Hamann, W.-R.
Stellar Parameters of Galactic WC Stars 249 Sander, A.; Hamann, W.-R.
X-Ray Plasma Temperature Distribution in the Wind of ζ Puppis 252 Hervé, A.; Rauw, G.; Nazé, Y.
Spectral Analysis of B Stars: An Application of Bayesian Statistics 256 Mugnes, J.-M.; Robert, C.
On the Systematic Errors of Quantitative Spectroscopy of O Stars 260 Sabín-Sanjulián, C.; Simón-Díaz, S.; García, M.; Herrero, A.; Puls, J.; Castro, N.
Quantitative NIR Spectroscopy of Massive Stars 263 Sana, H.; Stap, F. A.; de Koter, A.; Martins, F.; Smette, A.; De Becker, M.; Nazé, Y.
Quantitative Study of Blue Stars in NGC 55 267 Castro, N.; Herrero, A.; Urbaneja, M. A.; García, M.; Simón-Díaz, S.; Bresolin, F.; Pietrzynski, G.; Kudritzki, R.-P.; Gieren, W.
General Discussion - Session V 270 Smith, L.
Session VI. Massive Binaries   
Massive Binaries: Dynamical and Evolutionary Transformations 275 Gies, D. R.
The VLT-FLAMES Tarantula Survey: Multiplicity and Dynamics of the Massive Stars in 30 Dor 284 Sana, H.; Dunstall, P. R.; Hénault-Brunet, V.; Walborn, N. R.; de Koter, A.; de Mink, S. E.; Dufton, P. L.; Evans, C. J.; Maíz Apellániz, J.; Taylor, W. D.; Vink, J. S.
Close Binaries, Rotation, and Instabilities in Supernova Progenitors 290 Smith, N.
Binaries, Stratified Disks, and Bipolar Nebulae 296 Chesneau, O.
An X-Ray Survey of Colliding Wind Binaries 301 Gagné, M.; Fehon, G.; Savoy, M. R.; Cartagena, C. A.; Cohen, D. H.; Owocki, S. P.
The Dazzling X-ray Histories of Wolf-Rayet Binaries 308 Pollock, A. M. T.
Multi-Wavelength Implications of the Companion Star in η Carinae 313 Madura, T. I.; Gull, T. R.; Groh, J. H.; Owocki, S. P.; Okazaki, A.; Hillier, D. J.; Russell, C.
He II λ4686 in η Carinae and Wind Collapse at Periastron 319 Damineli, A.; Teodoro, M.
Eclipse and Collapse of the Colliding Wind X-ray Emission from Eta Carinae 325 Hamaguchi, K.; Corcoran, M. F.; Eta Carinae Team
Acyclic High-Energy Variability in Eta Carinae and WR 140 330 Corcoran, M. F.
The Orbit and Proper Motion of WR 140 336 Smith, I. A.; Dougherty, S. M.; Beasley, A. J.
ζ Pup: The Merger of at Least Two Massive Stars? 342 Vanbeveren, D.
MOST: A Powerful Tool to Reveal the True Nature of the Mysterious Dust-Forming Wolf-Rayet Binary CV Ser 348 David-Uraz, A.; Moffat, A. F. J.; Chené, A.-N.; MOST Collaboration
Modeling the Colliding Wind Spectra of CV Ser (WR 113) 351 Hill, G. M.; Moffat, A. F. J.; St-Louis, N.
New INTEGRAL Observations of η Carinae Close to Periastron 354 Leyder, J.-C.; Walter, R.; Rauw, G.
Modeling the Asymmetric Wind of Massive LBV Binary MWC 314 358 Lobel, A.; Groh, J.; Torres Dozinel, K.; Gorlova, N.; Martayan, C.; Raskin, G.; Van Winckel, H.; Prins, S.; Pessemier, W.; Waelkens, C.; Frémat, Y.; Hensberge, H.; Dummortier, L.; Jorissen, A.; Van Eck, S.; Lehmann, H.
Sparse Aperture Masking of Massive Stars 363 Sana, H.; Lacour, S.; Le Bouquin, J.; de Koter, A.; Moni-Bidin, C.; Muijres, L.; Schnurr, O.; Zinnecker, H.
High Angular Resolution Observations of the Massive Stars in Cyg OB2 366 Caballero-Nieves, S. M.; Gies, D. R.; Nelan, E. P.
Massive Non-Thermal Radio Emitters: New Data and their Modeling 369 Volpi, D.; Blomme, R.; De Becker, M.; Nazé, Y.
2009: A Colliding-Wind Odyssey 372 Fahed, R.; Moffat, A. F. J.; Zorec, J.; Eversberg, T.; Chené. A. N.; Alves, F.; Arnold, W.; Bergmann, T.; Corcoran, M. F.; Correia Viegas, N. G.; Dougherty, S. M.; Fernando, A.; Frémat, Y.; Gouveia Carreira, L. F.; Hunger, T.; Knapen, J. H.; Leadbeater, R.; Marques Dias, F.; Martayan, C.; Morel, T.; Pittard, J. M.; Pollock, A. M. T.; Rauw, G.; Reinecke, N.; Ribeiro, J.; Romeo, N.; Sánchez-Gallego, J. R.; dos Santos, E. M.; Schanne, L.; Stahl, O.; Stober, Ba.; Stober, Be.; Vollmann, K.; Williams, P. M.
General Discussion - Session VI 376 Vanbeveren, D.
Session VII. Young Open Star Clusters: Keys to Understanding Massive Stars   
Young Star Clusters: Keys to Understanding Massive Stars 383 Davies, B.
The Ultraviolet Imaging Telescope Onboard ASTROSAT to Study Young Stellar Populations 392 Robert, C.; Couture, P.; Goulet, M.; Drissen, L.
Feedback from Winds and Supernovae in Massive Stellar Clusters 398 Pittard, J. M.; Rogers, H.
Testing Feedback Models with Nearby Star Forming Regions 404 Doran, E.; Crowther, P.
Young Stellar Clusters in the VVV Survey 410 Chené, A.-N.; Borissova, J.; Clarke, J. R. A.; Sale, S. E.; Moni-Bidin, C.; Mauro, F.; Bonatto, C.; Kurtev, R.; Baume, G.; Feinstein, C.; Ivanov, V. D.; Geisler, D.; Catelan, M.; Minniti, D.; Lucas, P.; VVV Team
Stellar Feedback at Low Metallicity: The Gas Dynamics of the Young SMC Cluster NGC 346 416 Smith, L. J.
Analysis of the B and Be Star Populations of the Double Cluster h and χ Persei 422 Marsh Boyer, A. N.; McSwain, M. V.
General Discussion - Session VII 425 Crowther, P.
Session VIII. Massive Star Formation   
Completing the Massive Star Population: Striking Into the Field 431 Oey, M. S.; Lamb, J. B.
The IMF of Field OB Stars in the Small Magellanic Cloud 440 Lamb, J. B.; Oey, M. S.; Graus, A. S.; Segura-Cox, D. M.
On the Formation of Massive Stars 446 Kaper, L.; Ellerbroek, L.; Ochsendorf, B.; Bik, A.
The Formation and Evolution of Massive Binaries 451 Kratter, K. M.
N33 and Isolated Massive Star Formation in the Small Magellanic Cloud 457 Selier, R.; Heydari-Malayeri, M.; Gouliermis, D.
General Discussion - Session VIII 460 Walborn, N.
Session IX. Massive Star Surveys   
Searching for Wolf-Rayet Stars in the Local Group 465 Shara, M. M.; Zurek, D.; Kanarek, G.; Faherty, J.
Red Eyes on Wolf-Rayet Stars: New Discoveries via Infrared Color Selection 472 Mauerhan, J. C.; Van Dyk, S.; Morris, P.
Searching for Wolf-Rayet Stars Beyond the Local Group 478 Bibby, J. L.; Shara, M. M.; Crowther, P. A.; Moffat, A. F. J.
The Galactic O-Star Spectroscopic (GOSSS) and Northern Massive Dim Stars (NoMaDS) Surveys, the Galactic O-Star Catalog (GOSC), and Marxist Ghost Buster (MGB) 484 Maíz Apellániz, J.; Pellerin, A.; Barbá, R. H.; Simón-Díaz, S.; Alfaro, E. J.; Morrell, N. I.; Sota, A.; Penadés Ordaz, M.; Gallego Calvente, A. T.
Two Remarkable Spectroscopic Categories of Young O Stars from the VLT-FLAMES Tarantula Survey 490 Walborn, N. R.; Sana, H.; Taylor, W. D.; Simón-Díaz, S.; Evans, C. J.
Hyperspectral Imagers for the Study of Massive Star Nebulae 498 Drissen, L.; Alarie, A.; Martin, T.; SpIOMM/SITELLE Team
New Galactic Star Clusters Discovered in the VVV Survey 504 Borissova, J.; Clarke, J. R. A.; Bonatto, C.; Chené, A. N.; Bica, E.; Kurtev, R.; Minniti, D.; Peñaloza, F.; Catelan, M.; Lucas, P.; Sale, S. E.; Mauro, F.; Moni Bidin, C.; Geisler, D.; Ivanov, V. D.; Baume, G. L.
Massive Variable Stars at Low Metallicity: The Case of NGC 3109 508 Bomans, D. J.; Weis, K.; Wittkowski, M.
Discovery of a New Wolf-Rayet Star Using SAGE-LMC 511 Gvaramadze, V. V.; Chené, A.-N.; Kniazev, A. Y.; Schnurr, O.
Spectral Identification of New Galactic cLBV and WR Stars 514 Stringfellow, G. S.; Gvaramadze, V. V.; Beletsky, Y.; Kniazev, A. Y.
Fighting for Telescope Time? Use the Amateurs! 518 Eversberg, T.
General discussion - Session IX 521 Moffat, A. F. J.
Zusammenfassung 523 Fullerton, A. W.
Back Matter   
Author Index 529 Drissen, L.; Robert, C.; St-Louis, N.; Moffat, A. F. J.
Back Matter 533