NOAO >   Observing Info >   Approved Programs >   2009B-0385

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Proposal Information for 2009B-0385


PI: Janice Lee, Carnegie Observatories, jlee@ociw.edu
Address: 813 Santa Barbara Street, Pasadena, CA 91101, USA

CoI: Chun Ly, UCLA
CoI: Samir Salim, NOAO
CoI: Daniel Dale, University of Wyoming
CoI: Carolynn Moore, University of Wyoming
CoI: Rose Finn, Siena College
CoI: Masami Ouchi, Carnegie Observatories
CoI: Ivelina Momcheva, Carnegie Observatories

Title: Extending Deep Wide H(alpha) Galaxy Surveys to Higher Redshift with NEWFIRM

Abstract: We propose to complete our campaign with NEWFIRM to extend H(alpha) galaxy surveys to higher redshift. Our strategy identifies emission- line galaxies using custom narrowband filters which sample low airglow windows in the near-IR. Observations for the first phase of the survey, targeting H(alpha) emitters at z=0.8, were carried out in 07B and 08B. Here, we describe the second phase which is designed to detect ~300 H(alpha) emitters at z=2.2 and probe observed star formation rates (SFRs) down to ~0.4L^*(~8 h_70^-2 M_\odot yr^- 1). The H(alpha)-selected dataset will enable a host of studies ranging from the determination of H(alpha) luminosity functions and SFR volume densities during a crucial period when the star formation activity of the Universe was at a maximum, to an examination of the relative biases of other galaxy selection techniques used at intermediate redshift. Further, the requested observations form the critical foundation of a unique overall program for star-forming galaxies at z=2.2 which will leverage the capabilities of a range of instruments and facilities, such as companion Ly(alpha) narrowband imaging with Subaru and ultra-deep H(alpha) imaging over smaller fields with Magellan FourStar.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



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