UKIRT: The United Kingdom Infrared Telescope
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Hawai’i Supernova Flows: a peculiar velocity survey using over a thousand supernovae in the near-infrared (Do A. et al., 2025, MNRAS, 536, 624)

The figure above depicts distance modulus versus redshift for a subset of the Hawai’i Supernova Flows sample with colors indicating predicted peculiar velocity from the 2M++ model. This survey will directly measure the component of Hubble scatter from peculiar velocities. UKIRT’s NIR coverage should reduce distance scatter by up to 30% and substantially reduce systemic…
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Redder than Red: Discovery of an Exceptionally Red L/T Transition Dwarf (Schneider A. et al., 2023, ApJ, 943L..16)

UKIRT has discovered a free-floating planetary mass brown dwarf, J050626.96+073842.4 (pictured above). J050626.96+073842.4 has the reddest known colors of any brown dwarf around L/T transition — young and very dusty atmosphere. Below is photometric data from the UHS survey and the USNO-UKIRT parallax.
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Detection of an Earth-sized exoplanet orbiting the nearby ultracool dwarf star SPECULOOS-3 (Gillon, M. et al. 2024, NatAs, 8, 865)

UKIRT has assisted in the discovery of SPECULOOS-3 b—an earth-sized exoplanet in a 17 hour orbit around an M6.5-type dwarf star 16.8 parsecs away. A K-band transit light curve was obtained from UKIRT using the UKIRT Wide Field Camera (WFCAM) on two epochs. The exoplanet is suitable for spectroscopic studies from JWST. Pictured above are…