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The dispersal of protoplanetary disks around binary stars
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I present models of disk evolution around young binary stars. I show that the primary factor in determining circumbinary disk lifetimes is the rate of disk photoevaporation. I also find that photoevaporative clearing leaves a signature on the distribution of circumbinary disk lifetimes, with a sharp increase in disk lifetimes for binary separations a<~0.3-1AU. Observations of young binary stars can therefore be used to test models of disk evolution, and I show that current data set a strong upper limit to the rate of on-going photoevaporation (<1e-9 M_sun/yr). Finally I discuss the implications of these results for planet formation, and suggest that circumbinary planets around close (a<~1AU) binaries should be relatively common.
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Circumstellar and circumbinary discs in multiple stellar systems
This review consolidates current knowledge on how stellar multiplicity shapes protoplanetary disc structure, dust evolution, and planet formation outcomes.
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