Physics
Scientific paper
Feb 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011noao.prop..212b&link_type=abstract
NOAO Proposal ID #2011A-0212
Physics
Scientific paper
The formation of planetary systems is intimately connected to the properties of the circumstellar disks in which they are formed. While most disk studies have focused on nearby star forming regions like Taurus for their proximity, most stars actually form in dense clusters near massive OB-stars like those in Orion. Building on the success of our NIFS observations of H2 in circumstellar disks in Taurus, we propose to observe the young binary "proplyd" in Orion, 253-1536, to measure its molecular gas content. Although molecular gas is the dominant constituent of circumstellar disks, (99% by mass), it has not been spatially resolved toward any disks in Orion to date. If we can spatially resolve the H2 emission from the disk, we can directly estimate the mass of emitting molecular gas in these disks, and constrain the gas-to-dust ratio for the first time in Orion. Our proposed observations will allow more accurate measurements of the disk masses, and will constrain models for the potential of disks to form planets in the typical birth environment of most stars in our Galaxy.
Bary Jeff
Beck Tracy
Mann Rita
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