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The MiMeS Project: Magnetism in Massive Stars
G. A. Wade, E. Alecian, D. A. Bohlender +11
The Magnetism in Massive Stars (MiMeS) Project is a consensus collaboration among the foremost international researchers of the physics of hot, massive stars, with the basic aim of…
The magnetic field of the B3V star 16 Pegasi
H. F. Henrichs, C. Neiner, R. S. Schnerr +8
The Slowly Pulsating B3V star 16 Pegasi was discovered by Hubrig (2006) to be magnetic, based on low-resolution spectropolarimetric observations with FORS1 at the VLT. We have conf…
The MiMeS Project: First Results
J. H. Grunhut, E. Alecian, D. A. Bohlender +11
Massive stars are those stars with initial masses above about 8 times that of the sun, eventually leading to catastrophic explosions in the form of supernovae. These represent the…
The seismology programme of CoRoT
E. Michel, A. Baglin, M. Auvergne +1
We introduce the main lines and specificities of the CoRoT Seismology Core Programme. The development and consolidation of this programme has been made in the framework of the CoRo…
The Gaia satellite: a tool for Emission Line Stars and Hot Stars
Christophe Martayan, Yves Fremat, Ronny Blomme +19
The Gaia satellite will be launched at the end of 2011. It will observe at least 1 billion stars, and among them several million emission line stars and hot stars. Gaia will provid…
Radial velocities, dynamics of stars and nebulosities with GAIA and VLT-GIRAFFE
Christophe Martayan, Yves Fremat, Ronny Blomme +8
This document is divided in two parts. The first part deals with the radial velocities (RV) distributions for B-type stars and nebulosities observed with the VLT-GIRAFFE in the Lar…
Variability of B and Be stars in the LMC/SMC: binaries and pulsations
Christophe Martayan, Pascual Diago, Juan Gutiérrez-Soto +5
To study the variability of the 523 B and Be stars observed in the Magellanic clouds with the VLT-FLAMES, we cross-matched the stars of our sample with the photometric database MAC…
Early-type objects in NGC6611 and Eagle Nebula
Christophe Martayan, Michele Floquet, Anne-Marie Hubert +4
An important question about Be stars is whether Be stars are born as Be stars or not. It is necessary to observe young clusters to answer this question. Observations of stars in NG…
On the nature of early-type emission line objects in NGC6611
Christophe Martayan, Michele Floquet, Anne-Marie Hubert +4
The number and the nature of emission line stars in the young open cluster NGC6611 is still the object of debates. Due to the presence of a strong and variable nebulosity in the cl…
On the behaviour of B and Be stars at low metallicity
Christophe Martayan, Yves Fremat, Anne-Marie Hubert +7
We present new results obtained with the VLT GIRAFFE for a large sample of B and Be stars belonging to the Magellanic Clouds, i.e. at low metallicity. First, we show the effects of…
Multiperiodic pulsations in the Be stars NW Ser and V1446 Aql
J. Gutiérrez-Soto, J. Fabregat, J. Suso +7
Aims: We present accurate photometric time series of two Be stars: NW Ser and V1446 Aql. Both stars were observed at the Observatorio de Sierra Nevada (Granada) in July 2003 with a…
Be stars and binaries in the field of the SMC open cluster NGC330 with VLT-FLAMES
Christophe Martayan, Michele Floquet, Anne-Marie Hubert +4
Observations of hot stars belonging to the young cluster SMC-NGC330 and its surrounding region were obtained with the VLT-GIRAFFE facilities in MEDUSA mode. We investigated the B a…
Be stars in open clusters in the Small Magellanic Cloud
Christophe Martayan, Dietrich Baade, Anne-Marie Hubert +4
We report on the study of the population of B and Be stars in SMC young clusters, performed with the Wide Field Imager in slitless spectroscopic mode at ESO/T2.2m with a filter cen…
Effects of metallicity, star-formation conditions, and evolution in B and Be stars. II: Small Magellanic Cloud, field of NGC 330
Christophe Martayan, Yves Frémat, Anne-Marie Hubert +3
We search for effects of metallicity on B and Be stars in the Small and Large Magellanic Clouds (SMC and LMC) and in the Milky Way (MW). We extend our previous analysis of B and Be…
Attempts to measure the magnetic field of the pulsating B star Eridani
R. S. Schnerr, E. Verdugo, H. F. Henrichs +1
We report on attempts to measure the magnetic field of the pulsating B star Eridani with the Musicos spectropolarimeter attached to the 2m telescope at the Pic du Midi, France.…
Effects of metallicity, star formation conditions and evolution of B & Be stars
Christophe Martayan, Anne-Marie Hubert, Michele Floquet +3
To study the effects of metallicity and evolution on the appearance of the Be phenomenon in the B stars population, we observed several fields in the Large and Small Magellanic Clo…
Effects of metallicity, star formation conditions and evolution in B and Be stars. I: Large Magellanic Cloud, field of NGC 2004
Christophe Martayan, Yves Fremat, Anne-Marie Hubert +3
Spectroscopic observations of hot stars belonging to the young cluster LMC-NGC 2004 and its surrounding region were carried out with the VLT-GIRAFFE facilities in MEDUSA mode. We d…
A study of the B and Be star population in the field of the LMC open cluster NGC2004 with VLT-FLAMES
Christophe Martayan, Anne-Marie Hubert, Michele Floquet +5
Observations of hot stars belonging to the young cluster LMC-NGC2004 and its surrounding region have been obtained with the VLT-GIRAFFE facilities in MEDUSA mode. 25 Be stars were…
Fundamental parameters of Be stars located in the seismology fields of COROT
Yves Y. Fremat, Coralie Neiner, Anne-Marie Hubert +4
In preparation for the COROT space mission, we determined the fundamental parameters (spectral type, temperature, gravity, vsini) of the Be stars observable by COROT in its seismol…
XMM-Newton observations of MR Vel/RX J0925.7-4758
C. Motch, H. Bearda, C. Neiner
We report on XMM-Newton observations of the galactic supersoft X-ray source RX J0925.7-4758. The RGS spectrum exhibits a wealth of spectral features from iron and oxygen. XMM-Newto…