A Deep Newfirm Survey of the Orion A Cloud

Details A Deep Newfirm Survey of the Orion A Cloud A Deep Newfirm Survey of the Orion A Cloud

Aug 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010noao.prop..593m&link_type=abstract

NOAO Proposal ID #2010B-0593

Physics

Scientific paper

We propose deep NEWFIRM H and Ks observations of the Orion A Molecular Cloud. The Orion A cloud is the most active molecular cloud within 420 pc of the Sun. Spitzer identified 3200 pre-main sequence stars with disks and 300 protostars in the Orion A 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:
- Combine with existing Spitzer mapping to identify very low mass young stars with disks down past the Deuterium burning limit.
- Detect deeply embedded protostars and their reflection nebulae: these data are a crucial input to an ongoing Herschel survey of Spitzer selected protostars in Orion.
- Map the gas column density of the Orion A cloud by extinction and star counts. 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 star formation.

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