The CatWISE2020 Catalog
Dott. Federico Marocco
CALifornia institute of TECHnology – IPAC
7 Ottobre 2021 ore 9
CatWISE2020 is an all-sky infrared catalog of brightness, position, and proper motion for ~2.2 billion sources. The catalog was generated from WISE and NEOWISE survey data at 3.4 and 4.6 microns collected between 2010 and 2018.
This dataset includes 6x as many exposures and spans over 16x as large a time baseline as the dataset used for the AllWISE catalog, enabling the CatWISE2020 catalog to include fainter sources and provide far more accurate measurements of their motions than AllWISE. The depth and motion sensitivity achieved by CatWISE2020 make it an excellent resource for a variety of astrophysical applications, from the discovery and characterization of nearby brown dwarfs, to the identification of high-z galaxy clusters.
In this talk, I will give a quick summary of the CatWISE2020 pipeline, and an overview of the catalog completeness, reliability, and of its photometric and astrometric performance. I will then showcase initial results from a program that leverages CatWISE2020’s key features to identify cold brown dwarfs in the solar neighborhood, a population that can help answer crucial questions about the low-mass end of the mass function.