%0 Generic %1 schlafly2019unwise %A Schlafly, Edward F. %A Meisner, Aaron M. %A Green, Gregory M. %D 2019 %K WISE catalog %T The unWISE Catalog: Two Billion Infrared Sources from Five Years of WISE Imaging %U http://arxiv.org/abs/1901.03337 %X We present the unWISE Catalog, containing the positions and fluxes of roughly two billion objects observed by the Wide-field Infrared Survey Explorer (WISE) over the full sky. The unWISE Catalog has two advantages over the existing WISE catalog (AllWISE): first, it is based on significantly deeper imaging, and second, it features improved modeling of crowded regions. The deeper imaging used in the unWISE Catalog comes from the coaddition of all publicly available 3$-$5 micron WISE imaging, including that from the ongoing NEOWISE-Reactivation mission, thereby increasing the total exposure time by a factor of 5 relative to AllWISE. At these depths, even at high Galactic latitudes many sources are blended with their neighbors; accordingly, the unWISE analysis simultaneously fits thousands of sources to obtain accurate photometry. Our new catalog detects sources at 5-sigma roughly 0.7 magnitudes fainter than the AllWISE catalog and more accurately models millions of faint sources in the Galactic plane, enabling a wealth of Galactic and extragalactic science. In particular, relative to AllWISE, unWISE doubles the number of galaxies detected between redshifts 0 and 1 and triples the number between redshifts 1 and 2, cataloging more than half a billion galaxies over the whole sky.

@misc{schlafly2019unwise, abstract = {We present the unWISE Catalog, containing the positions and fluxes of roughly two billion objects observed by the Wide-field Infrared Survey Explorer (WISE) over the full sky. The unWISE Catalog has two advantages over the existing WISE catalog (AllWISE): first, it is based on significantly deeper imaging, and second, it features improved modeling of crowded regions. The deeper imaging used in the unWISE Catalog comes from the coaddition of all publicly available 3$-$5 micron WISE imaging, including that from the ongoing NEOWISE-Reactivation mission, thereby increasing the total exposure time by a factor of 5 relative to AllWISE. At these depths, even at high Galactic latitudes many sources are blended with their neighbors; accordingly, the unWISE analysis simultaneously fits thousands of sources to obtain accurate photometry. Our new catalog detects sources at 5-sigma roughly 0.7 magnitudes fainter than the AllWISE catalog and more accurately models millions of faint sources in the Galactic plane, enabling a wealth of Galactic and extragalactic science. In particular, relative to AllWISE, unWISE doubles the number of galaxies detected between redshifts 0 and 1 and triples the number between redshifts 1 and 2, cataloging more than half a billion galaxies over the whole sky.}, added-at = {2019-01-14T17:33:15.000+0100}, author = {Schlafly, Edward F. and Meisner, Aaron M. and Green, Gregory M.}, biburl = {https://www.bibsonomy.org/bibtex/236b90205f57291f4b5a04825bedef84d/heh15}, description = {The unWISE Catalog: Two Billion Infrared Sources from Five Years of WISE Imaging}, interhash = {315c078b76f070ae68c0f99d4691ba3d}, intrahash = {36b90205f57291f4b5a04825bedef84d}, keywords = {WISE catalog}, note = {cite arxiv:1901.03337Comment: 23 pages, 10 figures, catalog available at http://catalog.unwise.me}, timestamp = {2019-01-14T17:33:15.000+0100}, title = {The unWISE Catalog: Two Billion Infrared Sources from Five Years of WISE Imaging}, url = {http://arxiv.org/abs/1901.03337}, year = 2019 }