Open AccessFull-sky unWISE Coadds at Seven Years’ Depth
Author(s) -
Aaron M. Meisner,
Dustin Lang,
Edward F. Schlafly,
David J. Schlegel
Publication year - 2021
Publication title -
research notes of the aas
Language(s) - English
Resource type - Journals
ISSN - 2515-5172
DOI - 10.3847/2515-5172/ac21ca
Subject(s) - sky , galaxy , petabyte , astronomy , quasar , repurposing , physics , pixel , astrophysics , emissivity , remote sensing , computer science , geography , optics , engineering , big data , waste management , operating system
unWISE is a wide-ranging data analysis effort aimed at repurposing the combined Wide-field Infrared Survey Explorer (WISE) plus NEOWISE imaging archive for Galactic and extragalactic astrophysics. We present updated static sky maps incorporating seven years of W 1 (3.4 μ m) and W 2 (4.6 μ m) single-exposure images, uniformly coadding nearly a quarter petabyte of input pixel data. These new unWISE atlases now constitute the deepest ever full-sky maps at wavelengths of 3–5 μ m, and will be used to select millions of Dark Energy Spectroscopic Instrument quasar and luminous red galaxy targets.