| Massive Stars and High-Energy Emission in OB Associations |
This workshop addresses recent developments in several hot topics related to massive star research. Recent analyses of the fundamental parameters of these important objects, of their interactions within binary systems as well as with their surroundings (including the feedback of massive stars on the formation of other stars) will be presented during this session. Special emphasis will be put on the results of the studies of OB associations and young open clusters with current high-energy space observatories (XMM-Newton, Chandra and INTEGRAL) which provide not only information on the massive stars, but also on pre-main sequence stars, supernovae, micro-quasars and their link to ultra-luminous X-ray sources.
Scientific committee for this workshop:
| Blomme Ronny | ROB, Belgium | |
| Gosset Eric | ULg, Belgium | |
| Nazé Yaël | ULg, Belgium | |
| Rauw Gregor | ULg, Belgium (chair) | |
| Swings Jean-Pierre | ULg, Belgium | |
| Vreux Jean-Marie | ULg, Belgium |
Plenary Talks:
| Monday - 4 July 2005 Room: 304 | |
| 10h20~11h10 | X-ray and Gamma-Ray Emission from Single and Binary
Early-Type Stars Ian R. Stevens School of Physics & Astronomy University of Birmingham, United Kingdom |
| Tuesday - 5 July 2005 Room: 304 | |
| 09h50-10h40 | Star-forming regions at high energies: the tip of the iceberg Thierry Montmerle Laboratoire d'Astrophysique de Grenoble, Université Joseph-Fourier, France |
Afternoon talks:
| Monday - 4 July 2005 Room: S74 | |
| Session 1: Massive stars: general properties and peculiar objects (chair: Ronny Blomme) | |
| 13h35~14h15 | Invited talk: Fundamental Parameters of Massive OB stars in the Milky Way and Nearby Galaxies A. Herrero |
| 14h15-14h40 | The peculiar Of?p stars HD108 and HD191612 Y.Naze |
| 14h40-15h05 | XMM-Newton RGS Observations of zeta Orionis and their Implications
for a new interpretation of the X-ray emission from O stars A Pollock |
| 15h05-15h30 | NGC6231: five years of investigations H. Sana |
| 15h30-16h00 | Coffee break |
| 16h00-16h40 | Invited talk: X-ray Survey of Wolf-Rayet Stars in the Magellanic Clouds M. Guerrero |
| Session 2: Colliding winds and non-thermal phenomena (chair Andre Bykov) | |
| 16h45-17h10 | The colliding-wind binary WR140 - the particle acceleration
laboratory S. Dougherty |
| 17h10-17h35 | Non-thermal X-ray and Gamma-ray Emission from the Colliding Wind
Binary WR140 J. Pittard |
| 17h35-18h00 | Observations of non-thermal radio emission in O-type stars R. Blomme |
| Tuesday - 5 July 2005 Room: S74 | |
| Session 2: Colliding winds and non-thermal phenomena (chair Andre Bykov) | |
| 13h30-13h55 | Can single O stars produce non-thermal radio emission? S. Van Loo |
| 13h55-14h20 | Are WC9 Wolf-Rayet stars in colliding wind binaries? P.M. Williams |
| 14h20-14h45 | The XMM-Newton view of Plaskett's star and its surroundings N. Linder |
| 14h45-15h15 | Poster review P. Eenens |
| 15h30-16h00 | Coffee break |
| Session 3: High energy emission in young open clusters and OB associations (chair Andy Pollock) | |
| 16h00-16h25 | Energetic processes and nonthermal emission of starforming
complexes A. Bykov |
| 16h25-16h50 | X-raying the super star clusters in the Galactic Center L. Oskinova |
| 16h50-17h15 | XMM-Newton observations of Cyg OB2 G. Rauw |
| 17h15-17h35 | General discussion |
| 17h35-18h00 | Poster session |
List of posters for this session:
| 1. | X-ray analysis of the close binary system FO15 J.F. Albacete Colombo et al. |
| 2. | A spectroscopic investigation of O-type stars in the open cluster
IC 1805 M. De Becker et al. |
| 3. | Evidence for phase-locked X-ray variations from the massive
colliding wind binary Cyg OB2 #8a M. De Becker et al. |
| 4. | Preliminary results of an observational campaign aiming at the
study of the binary system LSS3074 E. Gosset et al. |
| 5. | Searching for gamma-ray emission from OB associations with INTEGRAL,
some preliminary results J.-C. Leyder |
| 6. | The colliding winds of WR146 - seeing the works E. O'Connor et al. |
| 7. | On the multiplicity of the non-thermal radio emitters 9Sgr and
HD168112 G. Rauw et al. |
| 8. | CPD-41 7742: An unusual wind interaction. H. Sana et al. |
| 9. | CN status of a sample of galactic OB supergiants M. Sarta Dekovic et al. |