@conference {28466,
	title = {Evolutionary scenario for W UMa-type stars},
	volume = {252},
	year = {2008},
	month = {2008/10/1},
	pages = {427 - 428},
	abstract = {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.},
	keywords = {binaries: close, stars: activity, stars: evolution, stars: late type},
	isbn = {1743-9221},
	url = {https://ui.adsabs.harvard.edu/abs/2008IAUS..252..427S},
	author = {Stepie{\'n}, K. and Gazeas, K.}
}
