Evolutionary scenario for W UMa-type stars
An alternative to TRO model of a W UMa-type star is presented in which the binary is past mass exchange with mass ratio reversal. The secondary is hydrogen depleted and both components are in thermal equilibrium. Evolution in contact is driven by orbital angular momentum loss and mass transfer from the secondary to primary component,similarly as it is observed in Algols. Temperature equalization of both components results from an assumed energy transfer by a large scale flow encircling the whole system in the common envelope.
stars:activity binaries:close stars:evolution stars:late type
K.Stgpie(n) K.Gazeas
Warsaw University Observatory Harvard-Smithsonian Center for Astrophysics
国际会议
The 252th Symposium of the International Astronomical Union(国际天文学联合会第252届研讨会)
海南三亚
英文
427-428
2008-04-06（万方平台首次上网日期，不代表论文的发表时间）