PLANET FORMATION AROUND STARS OF VARIOUS MASSES : THE SNOW LINE AND THE FREQUENCY OF GIANT PLANETS

摘要: We use a semianalytic circumstellar disk model that considers movement of the snow line through evolution accretion and central star to investigate how gas giant frequency changes with stellar mass. The distance weakly mass; thus, planets form over wide range spectral types. probability given has at least one increases linearly mass from 0.4 3 M☉. Stars more massive than M☉ evolve quickly main sequence, which pushes 10-15 AU before protoplanets limits masses planet cores. If giants around solar stars is 6%, we predict occurrence rates 1% for 10% 1.5 stars. This result largely insensitive our assumed parameters. Finally, as 2.5 move sequence may allow ocean suggested by Leger et al. without migration.