2025/06/17 by Adam C. Schneider, Schneider, Adam C., F. J. Vrba +34 · 2 citations
Earth and Planetary Sciences · Engineering · #Astrophysics of Galaxies (astro-ph.GA) #Calibration and Measurement Techniques #FOS: Physical sciences #Geophysics and Gravity Measurements #Instrumentation and Methods for Astrophysics (astro-ph.IM) #Solar and Stellar Astrophysics (astro-ph.SR)
paper · pdf · doi:10.48550/arxiv.2506.14621
openalex publication_date 2025/06/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
This paper describes the second and third data releases (DR2 and DR3, respectively) from the ongoing United Kingdom Infrared Telescope (UKIRT) Hemisphere Survey (UHS). DR2 is primarily comprised of the K-band portion of the UHS survey, and was released to the public on June 1, 2023. DR3 mainly includes the H-band portion of the survey, with a public release scheduled for September 2025. The H- and K-band data releases complement the previous J-band data release (DR1) from 2018. The survey covers approximately 12,700 square degrees between declinations of 0 degrees and +60 degrees and achieves median 5σ point source sensitivities of 19.0 mag and 18.0 mag (Vega) for H and K, respectively. The data releases include images and source catalogs which include ∼581 million H-band detections and ∼461 million K-band detections. DR2 and DR3 also include merged catalogs, created by combining J- and K-band detections (DR2) and J-, H-, and K-band detections (DR3). The DR2 merged catalog has a total of ∼513 million sources, while the DR3 merged catalog contains ∼560 million sources.