The fate of discs around massive stars in young clusters
I. Physikalisches Institut, University of Cologne, Germany e-mail: firstname.lastname@example.org
Accepted: 10 April 2006
Aims.To understand whether there is a difference in the dispersion of discs around stars in high-density young stellar clusters like the Orion Nebula Cluster (ONC) according to the mass of the star.
Methods.Two types of simulations were combined – N-body simulations of the dynamics of the stars in the ONC and mass loss results from simulations of star-disc encounters, where the disc mass loss of all stars is determined as a function of time.
Results.We find that in the Trapezium, the discs around high-mass stars are dispersed much more quickly and to a larger degree by their gravitational interaction than for intermediate-mass stars. This is consistent with recent observations of IC 348, where a higher disc frequency was found around solar mass stars than for more massive stars, suggesting that this might be a general trend in large young stellar clusters.
Key words: stars: circumstellar matter / stars: planetary systems: protoplanetary disks / galaxies: star clusters
© ESO, 2006