Title:The nature of stars with the B[e] phenomenon through interferometric eyes

Abstract:
Stars that present the B[e] phenomenon are known to form a heterogeneous group. This group is 
composed by objects in different evolutionary stages, like high- and low-mass evolved stars, 
intermediate-mass pre-main sequence stars and symbiotic objects. However, for more than 50% of the 
confirmed B[e] stars the evolutionary stage is still unknown, so that they are gathered in the 
group of the unclassified B[e] stars. The main problem for  these stars is caused by the absence of 
knowledge related to their physical parameters and circumstellar geometry. Based on this, 
high-angular resolution interferometry is certainly an important tool to answer several questions. 
In this work, we present the results related to two objects, namely HD 50138 and MWC361, based on 
observations from VLTI/MIDI, VLTI/AMBER and CHARA/VEGA. The possible nature of these objects 
inferred from the interferometric measurements is discussed.