Journal
ASTRONOMY & ASTROPHYSICS
Volume 454, Issue 3, Pages 811-814Publisher
EDP SCIENCES S A
DOI: 10.1051/0004-6361:20064905
Keywords
stars : circumstellar matter; stars : planetary systems : protoplanetary disks; galaxies : star clusters
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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.
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