Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.5215c&link_type=abstract
American Astronomical Society, AAS Meeting #211, #52.15; Bulletin of the American Astronomical Society, Vol. 39, p.822
Astronomy and Astrophysics
Astronomy
Scientific paper
This project aims to find galaxies at high-redshifts using near-infrared (NIR) color comparison techniques. Observing high-redshift galaxies enables us to estimate star formation and ionization rates in early epoch galaxies. To date, star formation and ionization rates have only been established for a significant sample at relatively low redshifts, and a larger sample of high redshift sources are needed.
To identify high-redshift candidates, we use deep NIR and optical photometry of several large and widely separated fields. As a whole, these fields cover approximately 1.5 square degrees to a depth of 25 in the R band and 23.5 in the K band (AB magnitudes). To select high-redshift candidates, we have modified the Bruzual & Charlot galaxy evolution models. With these models we construct galaxy evolution tracks with color-color plots using color combinations such as z-J vs. J-K and J-H vs. H-K. Additionally, with our deep i and z'-band imaging, we identify a sample of objects that are likely to be Lyman-break star forming galaxies at 5.6
Barger Amy
Cariker Kaitlyn
Cowie Lennox L.
Keenan Ryan
Trouille Laura
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