NOAO >   Observing Info >   Approved Programs >   2012B-0514

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Proposal Information for 2012B-0514


PI: Tom Megeath, University of Toledo, megeath@physics.utoledo.edu
Address: Dept. of Physics and Astronomy, 2801 W. Bancroft St, Toledo, OH 43606

CoI: Lori Allen, NOAO
CoI: Tom Allen, University of Toledo
CoI: Rob Gutermuth, University of Masschussetts
CoI: Erin Kryukova, University of Toledo
CoI: Amelia Stutz, Max Planck Institute fuer Astronomie
CoI: Will Fischer, University of Toledo
CoI: Babar Ali, Nasa Herschel Science Center

Title: A Deep Newfirm Survey of the Orion B Cloud

Abstract: We propose deep NEWFIRM H and Ks observations of the Orion B Molecular Cloud. The Orion B cloud is the 2nd most active molecular cloud within 420 pc of the Sun, after the Orion A cloud. Spitzer identified 528 pre-main sequence stars with disks and 100 protostars in the Orion B cloud. The NEWFIRM survey will obtain deep H and Ks data with sensitivities 4-5 magnitudes deeper than the 2MASS survey. The goals are the following: \beginitemize \item Detect deeply embedded protostars: these data are a crucial input to a Herschel, Spitzer and Hubble survey of over 300 Spitzer selected protostars in the Orion A and B clouds and are needed to determine the inclination of the protostars and the geometry of their outflow cavities. \item Map the gas column density by extinction using the combined NEWFIRM and Spitzer 3.6 (micron) data. By correlating column density with the properties of protostars and the density of young stars, we can better understand how how the gas column density influences the rate of star formation and the properties of the nascent stars forming within the gas. \enditemize


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