Computer Science
Scientific paper
Aug 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008noao.prop..355k&link_type=abstract
NOAO Proposal ID #2008B-0355
Computer Science
Scientific paper
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.
Dressler Alan
Kelson Daniel D.
McCarthy Patrick. J.
Mulchaey John S.
Oemler Augustus A.
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