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- W2339652235 abstract "We present the development of a photometrically selected Luminous Red Galaxy (LRG) catalog at redshift $zgeq 0.55$. LRG candidates are selected using infrared/optical color-color cuts, optimized using ROC curve analysis, with optical data from Sloan Digital Sky Survey (SDSS) and infrared data from unWISE forced photometry derived from the Wide-field Infrared Survey Explorer (WISE). The catalog contains 16,191,145 objects, selected over the full SDSS DR10 footprint. The redshift distribution of the resulting catalogs is estimated using spectroscopic redshifts from the DEEP2 Galaxy Redshift Survey and photometric redshifts from COSMOS. Restframe $U-B$ colors from DEEP2 are used to estimate LRG selection efficiency. In DEEP2, the resulting catalog has average redshift $z=0.65$, with standard deviation $sigma = 2.0$, and average restframe $U-B=1.0$, with $sigma=0.27$. In COSMOS, the resulting catalog has average redshift $z=0.60$, with standard deviation $sigma = 1.8$. We allow for 35% contamination from bluer galaxies, however we anticipate these to be massive galaxies in our targeted redshift range that will be equally cosmologically useful. Only an estimated 6% of selected objects are bluer sources with redshift $z<0.55$. Stellar contamination is estimated to be 1.8%." @default.
- W2339652235 created "2016-06-24" @default.
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- W2339652235 date "2016-04-04" @default.
- W2339652235 modified "2023-09-27" @default.
- W2339652235 title "Photometric Selection of a Luminous Red Galaxy Catalog with $zgeq0.55$" @default.
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- W2339652235 hasPublicationYear "2016" @default.
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