Title: Spectroscopic solution for the oEA star RZ Cas using the SHELLSPEC code
Authors: Tkachenko, A.
Lehmann, H.
Tsymbal, V.
Mkrtichian, D.E.
Issue Date: Dec-2008
Host Document: Communications in Asteroseismology vol:157 pages:377-378
Conference: Wroclaw HELAS Workshop ’Interpretation of Asteroseismic Data’ location:Wroclaw, Poland date:October 2008
Abstract: Reinvestigations of the short-period oEA star RZ Cas by using the “SHELLSPEC” code confirm most of the system parameters obtained by Lehmann & Mkrtichian (2008). Results from spectra obtained in 2001 point to a transient phase of rapid mass transfer and to the existence of dense circumprimary matter of disk-like structure, while results from spectra obtained in 2006 show that the system was in a quiet state during this period and can be modelled very well by two stars of which the secondary component fills its Roche lobe. The brightness distribution over the surface of the secondary can be described by a gravity darkening law that assumes two different exponents for hemispheres of different stars.
Publication status: published
KU Leuven publication type: IC
Appears in Collections:Institute of Astronomy

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