2009/09/11 by M. Kraus, Kraus, Michaela, M. Borges Fernandes +3
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics and Star Formation Studies #FOS: Physical sciences #Solar and Stellar Astrophysics (astro-ph.SR) #Stellar, planetary, and galactic studies
paper · pdf · doi:10.48550/arxiv.0909.2268
openalex publication_date 2009/09/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
It is surprising to find dust around B type stars, as in the case of B[e] stars. These stars exhibit a dense, dusty environment witnessed by their infrared-excess and many emission lines from permitted and forbidden transitions. Given the large uncertainties on their distances, this spectral type gathers many different kind of sources that may harbor a similar circumstellar environment, i.e. a dense dusty disk. At the exception of Young Stellar Objects, in many cases, it is very difficult to understand the origin of such a disk without invoking binarity. We describe current powerful methods, like spectral disentangling, spectro-astrometry and long baseline interferometry, to detect especially close binaries amongst the unclassified B[e] stars. The role of binary mergers in the formation of the B[e] phenomenon, especially in supergiants and compact PNe, is also discussed.