High Proper Motion Discoveries from the UKIRT Hemisphere Survey
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arXiv
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| author | Zhang, Wings Schneider, Adam C. Bickle, Thomas P. Burgasser, Adam J. Softich, Emma Marocco, Federico Gagliuffi, Daniella Bardalez Faherty, Jacqueline K. Meisner, Aaron M. Kirkpatrick, J. Davy Kuchner, Marc J. Kabatnik, Martin Kiwy, Frank Sainio, Arttu Schümann, Jörg Selg-Mann, Karl Andersen, Nikolaj Stevnbak Baller, Bruce Beaulieu, Paul Bell, John Caselden, Dan Colin, Guillaume Dereveanco, Alexandru Frank, Christoph Glebov, Konstantin Gramaize, Léopold Hamlet, Leslie K. Martin, David W. Pendrill, William Perlin, Stéphane Stenner, Andres Tanner, Christopher Thévenot, Melina Thakur, Vinod Andersen, Nikolaj Stevnbak |
| author_facet | Zhang, Wings Schneider, Adam C. Bickle, Thomas P. Burgasser, Adam J. Softich, Emma Marocco, Federico Gagliuffi, Daniella Bardalez Faherty, Jacqueline K. Meisner, Aaron M. Kirkpatrick, J. Davy Kuchner, Marc J. Kabatnik, Martin Kiwy, Frank Sainio, Arttu Schümann, Jörg Selg-Mann, Karl Andersen, Nikolaj Stevnbak Baller, Bruce Beaulieu, Paul Bell, John Caselden, Dan Colin, Guillaume Dereveanco, Alexandru Frank, Christoph Glebov, Konstantin Gramaize, Léopold Hamlet, Leslie K. Martin, David W. Pendrill, William Perlin, Stéphane Stenner, Andres Tanner, Christopher Thévenot, Melina Thakur, Vinod Andersen, Nikolaj Stevnbak |
| contents | 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 $\gtrsim$300 mas yr$^{-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 9 possible T-type dwarfs. Follow-up spectroscopy is needed to confirm spectral types and further characterize these new discoveries. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_22605 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | High Proper Motion Discoveries from the UKIRT Hemisphere Survey Zhang, Wings Schneider, Adam C. Bickle, Thomas P. Burgasser, Adam J. Softich, Emma Marocco, Federico Gagliuffi, Daniella Bardalez Faherty, Jacqueline K. Meisner, Aaron M. Kirkpatrick, J. Davy Kuchner, Marc J. Kabatnik, Martin Kiwy, Frank Sainio, Arttu Schümann, Jörg Selg-Mann, Karl Andersen, Nikolaj Stevnbak Baller, Bruce Beaulieu, Paul Bell, John Caselden, Dan Colin, Guillaume Dereveanco, Alexandru Frank, Christoph Glebov, Konstantin Gramaize, Léopold Hamlet, Leslie K. Martin, David W. Pendrill, William Perlin, Stéphane Stenner, Andres Tanner, Christopher Thévenot, Melina Thakur, Vinod Andersen, Nikolaj Stevnbak Solar and Stellar Astrophysics Earth and Planetary Astrophysics Astrophysics of Galaxies 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 $\gtrsim$300 mas yr$^{-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 9 possible T-type dwarfs. Follow-up spectroscopy is needed to confirm spectral types and further characterize these new discoveries. |
| title | High Proper Motion Discoveries from the UKIRT Hemisphere Survey |
| topic | Solar and Stellar Astrophysics Earth and Planetary Astrophysics Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2509.22605 |