NOAO >   Observing Info >   Approved Programs >   2008B-0355

Small NOAO Logo

Proposal Information for 2008B-0355


PI: Daniel D. Kelson, Carnegie Observatories, kelson@ociw.edu
Address: 813 Santa Barbara Street, Pasadena, CA 91101, USA

CoI: Patrick J. McCarthy, Carnegie Observatories
CoI: Alan Dressler, Carnegie Observatories
CoI: John S. Mulchaey, Carnegie Observatories
CoI: Stephen Shectman, Carnegie Observatories
CoI: Augustus A. Oemler, Carnegie Observatories
CoI: Haojing Yan, Carnegie Observatories

Title: The Carnegie Spitzer IMACS Survey

Abstract: We request observing time with NEWFIRM in support of a wide-area deep spectroscopic survey of galaxy and structure evolution from z=1.5 to the present. Using a new low-dispersion prism and upgraded detectors in the IMACS spectrograph on the 6.5m Magellan telescope we will obtain redshifts, spectral classifications, and emission-line strengths for 500 000 galaxies over 15 degs^2 in three fields over three years. Our targets are selected at 3.6(mu) m from Spitzer/IRAC legacy fields. Large area J and K_s imaging to modest depths is critical for the analysis and NEWFIRM is the only instrument in the US system that can provide the necessary coverage. To continue the J and K_s components of the survey, we request 6 nights at KPNO. We aim to reach J=21.5 mag and K_s=20.0 mag (Vega, D=3'', 5-sigma), allowing us to retain better than 1% redshift precision to M^*/3 at z=0.8 and for M^* to z=1.5. We waive all proprietary rights and will release our data via our own website, or via the NOAO science archive, along with the photometric and redshift catalogs. These data will allow us to accurately determine the dependencies of the evolution in stellar mass and star formation on both galaxy mass and local galaxy densities.


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



NOAO >   Observing Info >   Approved Programs >   2008B-0355

noaoprop-help@noao.edu

Small NOAO Logo