| Title: |
Deep Full-sky Coadds from Three Years of WISE and NEOWISE Observations |
| Authors: |
Meisner, AM; Lang, D; Schlegel, DJ |
| Source: |
The Astronomical Journal, vol 154, iss 4 |
| Publisher Information: |
eScholarship, University of California |
| Publication Year: |
2017 |
| Collection: |
University of California: eScholarship |
| Subject Terms: |
5109 Space Sciences (for-2020); 51 Physical Sciences (for-2020); infrared: general; techniques: image processing; 0201 Astronomical and Space Sciences (for); Astronomy & Astrophysics (science-metrix); 5101 Astronomical sciences (for-2020); 5107 Particle and high energy physics (for-2020) |
| Description: |
We have reprocessed over 100 terabytes of single-exposure Wide-field Infrared Survey Explorer (WISE)/NEOWISE images to create the deepest ever full-sky maps at 3–5 microns. We include all publicly available W1 and W2 imaging—a total of ∼8 million exposures in each band—from ∼37 months of observations spanning 2010 January to 2015 December. Our coadds preserve the native WISE resolution and typically incorporate ∼3× more input frames than those of the AllWISE Atlas stacks. Our coadds are designed to enable deep forced photometry, in particular for the Dark Energy Camera Legacy Survey (DECaLS) and Mayall z-Band Legacy Survey (MzLS), both of which are being used to select targets for the Dark Energy Spectroscopic Instrument. We describe newly introduced processing steps aimed at leveraging added redundancy to remove artifacts, with the intent of facilitating uniform target selection and searches for rare/exotic objects (e.g., high-redshift quasars and distant galaxy clusters). Forced photometry depths achieved with these coadds extend 0.56 (0.46) magnitudes deeper in W1 (W2) than is possible with only pre-hibernation WISE imaging. |
| Document Type: |
article in journal/newspaper |
| Language: |
unknown |
| Relation: |
qt5hr6s3h4; https://escholarship.org/uc/item/5hr6s3h4 |
| DOI: |
10.3847/1538-3881/aa894e |
| Availability: |
https://escholarship.org/uc/item/5hr6s3h4; https://doi.org/10.3847/1538-3881/aa894e |
| Rights: |
public |
| Accession Number: |
edsbas.EC3E9935 |
| Database: |
BASE |