Year: 2025
Type: article
Abstract: We used the third data release of the UKIRT Hemisphere Survey to locate previously unrecognized high proper motion objects. We identify a total of 127 new discoveries with total proper motions ≳300 mas yr −1 . A significant fraction of these sources with counterparts in the Gaia DR3 catalog are found to be distant (>100 pc) low-mass stars, where their large tangential velocities and placement on color–magnitude diagrams suggest that they are likely low-metallicity M-type subdwarfs. Optical spectroscopy is used to confirm the low mass and low metallicity for two such sources. Using available optical and infrared photometry, we estimate the spectral type for all non-Gaia sources and find 10 likely late-M dwarfs, 15 objects with colors most consistent with L-type dwarfs, and nine possible T-type dwarfs. Follow-up spectroscopy is needed to confirm spectral types and further characterize these new discoveries.
Source: The Astronomical Journal
Authors: Wings Zhang, Adam C. Schneider, Thomas P. Bickle, Adam J. Burgasser, Emma Softich, Federico Marocco, Daniella Bardalez Gagliuffi, Jacqueline K. Faherty, Aaron M. Meisner, J. Davy Kirkpatrick, Marc J. Kuchner, Martin Kabatnik, Frank Kiwy, Arttu Sainio, Jörg Schümann, Karl Selg-Mann, Nikolaj Stevnbak Andersen, Bruce Baller, Paul Beaulieu, John Bell, Dan Caselden, Guillaume Colin, Alexandru Dereveanco, Christoph Frank, Konstantin Glebov, Léopold Gramaize, Leslie K. Hamlet, David W. Martin, William Pendrill, Stéphane Perlin, Andres Stenner, Christopher Tanner, Melina Thévenot, Vinod Thakur
Institutions: United States Naval Observatory, U.S. Naval Observatory Flagstaff Station, The Open University, University of California San Diego, California Institute of Technology, Infrared Processing and Analysis Center, Amherst College, American Museum of Natural History, NSF NOIRLab, Goddard Space Flight Center
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $4,499
Funders: National Science Foundation, National Aeronautics and Space Administration, Gordon and Betty Moore Foundation, California Institute of Technology, Johns Hopkins University, Space Telescope Science Institute, University of Cambridge, Queen's University Belfast, Durham University, National Central University, Eötvös Loránd Tudományegyetem, Max-Planck-Institut für Astronomie, Jet Propulsion Laboratory, University of California, Los Angeles, Smithsonian Astrophysical Observatory, Science Mission Directorate, Science and Technology Facilities Council, U.S. Naval Observatory, Planetary Science Division, Los Alamos National Laboratory
Awards: G4474636675, G618131832, A NEO SEARCH PROGRAM USING THE PAN-STARRS PS1 TELESCOPETHE GOAL OF THE PROPOSED RESEARCH IS TO USE T, G7187964967, Pan-STARRS1: Operations; Public Data Release; Education and Outreach, G833430883, Astronomy and Astrophysics at the University of Nottingham - 2023 to 2026
OpenAlex ID: W4415461775