NOAO >   Observing Info >   Approved Programs >   2014B-0318

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Proposal Information for 2014B-0318


PI: Jeffrey S. Bary, Colgate University, jbary@colgate.edu
Address: Physics Department, 13 Oak Drive, Hamilton, NY 13346, US

CoI: Anne Dutrey, Laboratoire d'Astrophysique de Bordeaux
CoI: Emmanuel Di Folco, Laboratoire d'Astrophysique de Bordeaux
CoI: Stephane Guilloteau, Laboratoire d'Astrophysique de Bordeaux

Title: A Phoenix Survey for Molecular Hydrogen Emission from T Tauri Stars to Debris Disks

Abstract: We propose to survey six young stellar objects with Phoenix on the Mayall 4-meter searching for near-infrared emission from molecular hydrogen gas. H_2 is simultaneously the most abundant component of circumstellar material in young stellar objects and one of the most difficult to detect. However, studies that seek to characterize the progression of disks towards planetary systems need to understand how the gas contributes to disk evolution. The observations we propose will build on a previous near-infrared H_2 survey of mostly non-accreting T Tauri stars. Here we seek to include sources that are actively accreting and span a slightly larger range of evolutionary stages. Detecting the H_2 is merely the first step in a series of observations we have found quite useful for probing the physical processes at work in the circumstellar environments of evolving young star systems.


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NOAO >   Observing Info >   Approved Programs >   2014B-0318

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