000002623 001__ 2623
000002623 005__ 20160701171708.0
000002623 037__ $$aASTROimport-780
000002623 100__ $$aArias, M. L.
000002623 245__ $$aCircumstellar Rings, Flat and Flaring Disks
000002623 260__ $$c2007
000002623 520__ $$aEmission lines formed in the circumstellar envelopes of several type of stars can be modeled using first principles of line formation. We present simple ways of calculating line emission profiles formed in circumstellar envelopes having different geometrical configurations. The fit of the observed line profiles with the calculated ones may give first order estimates of the physical parameters characterizing the line formation regions: opacity, size, particle density distribution, velocity fields, excitation temperature. 
000002623 700__ $$a Zorec, J.
000002623 700__ $$a Frémat, Y.
000002623 773__ $$c419$$pActive OB-Stars: Laboratories for Stellare and Circumstellar Physics$$v361$$y2007
000002623 85642 $$ahttp://esoads.eso.org/abs/2007ASPC..361..419A
000002623 905__ $$apublished in
000002623 980__ $$aNONREF