%0 Journal Article %T Spin Evolution of Accreting Young Stars. II. Effect of Accretion-Powered Stellar Winds %+ Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)) %+ NASA Ames Research Center (ARC) %+ Observatorio Astronómico Nacional %+ Department of Physics and Astronomy [Hamilton, ON] %A P. Matt, Sean %A Pinzón, Giovanni %A P. Greene, Thomas %A E. Pudritz, Ralph %< avec comité de lecture %@ 0004-637X %J The Astrophysical Journal %I American Astronomical Society %V 745 %N 1 %P 101 %8 2012 %D 2012 %R 10.1088/0004-637X/745/1/101Journal articles %X We present a model for the rotational evolution of a young, solar-mass star interacting magnetically with an accretion disk. As in a previous paper (Paper I), the model includes changes in the star's mass and radius as it descends the Hayashi track, a decreasing accretion rate, and a prescription for the angular momentum transfer between the star and disk. Paper I concluded that, for the relatively strong magnetic coupling expected in real systems, additional processes are necessary to explain the existence of slowly rotating pre-main-sequence stars. In the present paper, we extend the stellar spin model to include the effect of a spin-down torque that arises from an accretion-powered stellar wind (APSW). For a range of magnetic field strengths, accretion rates, initial spin rates, and mass outflow rates, the modeled stars exhibit rotation periods within the range of 1-10 days in the age range of 1-3 Myr. This range coincides with the bulk of the observed rotation periods, with the slow rotators corresponding to stars with the lowest accretion rates, strongest magnetic fields, and/or highest stellar wind mass outflow rates. We also make a direct, quantitative comparison between the APSW scenario and the two types of disk-locking models (namely, the X-wind and Ghosh & Lamb type models) and identify some remaining theoretical issues for understanding young star spins. %G English %L cea-00828163 %U https://cea.hal.science/cea-00828163 %~ CEA %~ INSU %~ UNIV-PARIS7 %~ CNRS %~ OPENAIRE %~ DSM-IRFU %~ ERC-CEA %~ IRFU-AIM %~ CEA-DRF %~ UNIV-PARIS %~ UP-SCIENCES %~ GS-PHYSIQUE