5 papers · 1 filter
On the hydrogen neutral outflowing disks of B[e] supergiants
Michaela Kraus, Marcelo Borges Fernandes, Francisco X. de Araujo
(abridged) B[e] supergiants are known to possess geometrically thick dusty disks. Disk-forming wind models have, however, been found to be insufficient in reproducing the observed…
The enigmatic B[e] star Hen 2-90 -- an interacting binary?
Michaela Kraus, Marcelo Borges Fernandes, Francisco X. de Araujo
We present the enigmatic galactic unclassified B[e] star Hen 2-90. Its optical spectrum is discussed and analysed in terms of the forbidden emission lines coming from a non-spheric…
The outflowing disks of B[e] supergiants and unclassified B[e] stars
Michaela Kraus, Marcelo Borges Fernandes
B[e] supergiants are known to possess outflowing cool disks but also some unclassified B[e] stars show clear indications for the presence of a neutral disk. We derive constraints o…
The Analysis of the Rotating Disk of some Southern Galactic B[e] Stars
Marcelo Borges Fernandes, H. J. G. L. M. Lamers, Michaela Kraus
The spectra of stars with the B[e] phenomenon are dominated by features that are related to physical conditions of circumstellar material around these objects and are not intrinsic…
The Evolutionary Stage of 5 Southern Galactic Unclassified B[e] Stars
Marcelo Borges Fernandes, Francisco X. de Araújo, H. J. G. L. M. Lamers
The spectra of stars with the B[e] phenomenon are dominated by features that are related to physical conditions of circumstellar material around these objects and are not intrinsic…