Investigating the Nature of Circumstellar Material in Young Clusters

Details Investigating the Nature of Circumstellar Material in Young Clusters Investigating the Nature of Circumstellar Material in Young Clusters

Jul 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995hst..prop.6134l&link_type=abstract

HST Proposal ID #6134

Computer Science

Hst Proposal Id #6134 Interstellar Medium

Scientific paper

Recent studies of circumstellar nebulae associated with young stars in the Trapezium have illustrated the power of using HST to investigate the circumstellar environments of young stars in clusters. We propose to use WFPC2 to obtain sensitive broad band images of a sample of 4 young clusters associated with bright reflection nebulae. The primary goal of these observations is to search for evidence of circumstellar material around the young cluster members by looking for this material in 1.} absorption against the reflection nebulosity, 2.} in the reflected light of the cluster B star and 3.} in the reflected light of the young cluster stars themselves. The proposed HST data will be used in combination with near infrared and millimeter wavelength data to determine 1.} the frequency distribution of circumstellar material and disks in undisturbed young cluster environments, 2.} the size and mass distributions of circumstellar nebulae in clusters, and 3.} the correlation of such properties with stellar luminosity. Finally comparison of the results for the 5 clusters will allow us to explore the relative timescales for circumstellar evolution in young cluster stars and possibly constrain the timescales for planet formation in a cluster environment.

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