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 cluster, the number of emission line stars is highly
depending on the technique and the resolution used for the observations. Thanks
to observations with the ESO-WFI, in slitless spectroscopic mode, and with the
VLT-GIRAFFE we have been able to disentangle the circumstellar and nebular
emissions. We confirm the small number of true emission line objects and we
precise their nature: mainly Herbig Be stars.Comment: Sf2a 2007 PNP
