NOAO >   Observing Info >   Approved Programs >   2011B-0376

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Proposal Information for 2011B-0376


PI: Chun Ly, Space Telescope Science Institute, chunly@stsci.edu
Address: 3700 San Martin Drive, Baltimore, MD 21218, USA

CoI: Janice Lee, Carnegie Observatories
CoI: Rose Finn, Siena College
CoI: Daniel Dale, University of Wyoming
CoI: Samir Salim, Indiana University
CoI: Ivelina Momcheva, Carnegie Observatories
CoI: Masami Ouchi, University of Tokyo

Title: Extending Deep Wide \Ha Galaxy Surveys to Higher Redshift with NEWFIRM

Abstract: We propose to complete our NEWFIRM campaign to extend \Ha galaxy surveys to z~2. Our survey identifies emission-line galaxies using custom narrowband filters which sample low airglow windows in the near- IR. The requested observations form the foundation of a unique program that is comprehensively characterizing the properties of a deep, complete sample of intermediate redshift emission-line galaxies, by leveraging a full range of optical and near-IR imagers and spectrographs, in both ``shallow-wide'' and ``narrow-deep'' observational modes. We are using the \Ha-selected dataset for a range of essential studies, from determination of robust \Ha luminosity functions and star formation rate (SFR) volume densities, to measurement of the Ly(alpha) escape fraction. The first phase of the survey targeted \Ha at z=0.8 and was successfully completed in 07B and 08B. Since 09B, we have been obtaining data for the second phase of the survey, which is designed to detect ~400 \Ha emitters at z=2.2 and probe observed SFRs to ~0.2L^* (~8 h_70^-2 M_\odot yr^-1). However, only 60% of the needed data has been obtained due to an unlucky combination of poor weather, and technical problems with both camera and telescope. We are eager to complete the survey in 11B and are thus re- submitting our proposal.


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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