Other
Scientific paper
Feb 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001noao.prop..127v&link_type=abstract
NOAO Proposal ID #2001A-0127
Other
Scientific paper
The evolution of material in disks surrounding pre-main sequence stars is one of the most important, yet poorly understood, processes relating to the question of the origin of planetary systems. Several tracers of circumstellar material have been used to study protoplanetary disks in Herbig Ae/Be stars (HAeBes), with varying degrees of success. However, optical spectroscopy in forbidden emission lines, as is used commonly in studies of T Tauri stars, has so far hardly been used. In a pilot study we have obtained [O I] 6300.2 spectra of a few HAeBes which can be well reproduced by simple disk models. In order to verify this simple interpretation and to investigate the correlation between line profiles of forbidden emission lines and other tracers of circumstellar material in HAeBes, such as infrared solid-state bands and submm fluxes, we here propose to use the echelle spectrograph on the KPNO 4 m telescope to obtain high spectral resolution, high S/N [O I] 6300.2 spectroscopy of a sample of northern Herbig Ae/Be stars. A similar proposal has been submitted to ESO for the southern sources in our list.
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