Astronomy and Astrophysics – Astrophysics – Solar and Stellar Astrophysics
Scientific paper
2010-10-16
Astronomy and Astrophysics
Astrophysics
Solar and Stellar Astrophysics
Review about Be stars populations at the IAUS272
Scientific paper
Among the emission-line stars, the classical Be stars known for their extreme properties are remarkable. The Be stars are B-type main sequence stars that have displayed at least once in their life emission lines in their spectrum. Beyond this phenomenological approach some progresses were made on the understanding of this class of stars. With high-technology techniques (interferometry, adaptive optics, multi-objects spectroscopy, spectropolarimetry, high-resolution photometry, etc) from different instruments and space mission such as the VLTI, CHARA, FLAMES, ESPADONS-NARVAL, COROT, MOST, SPITZER, etc, some discoveries were performed allowing to constrain the modelling of the Be stars stellar evolution but also their circumstellar decretion disks. In particular, the confrontation between theory and observations about the effects of the stellar formation and evolution on the main sequence, the metallicity, the magnetic fields, the stellar pulsations, the rotational velocity, and the binarity (including the X-rays binaries) on the Be phenomenon appearance is discussed. The disks observations and the efforts made on their modelling is mentioned. As the life of a star does not finish at the end of the main sequence, we also mention their stellar evolution post main sequence including the gamma-ray bursts. Finally, the different new results and remaining questions about the main physical properties of the Be stars are summarized and possible ways of investigations proposed. The recent and future facilities (XSHOOTER, ALMA, E-ELT, TMT, GMT, JWST, GAIA, etc) and their instruments that may help to improve the knowledge of Be stars are also briefly introduced.
Baade Dietrich
Hubert Anne-Marie
Martayan Christophe
Rivinius Thomas
Zorec Jean
No associations
LandOfFree
Review about populations of Be stars: stellar evolution of extreme stars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Review about populations of Be stars: stellar evolution of extreme stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Review about populations of Be stars: stellar evolution of extreme stars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-181892