Discovery Of 118 New Ultracool Dwarf Candidates Using Machine Learning Techniques
We present the discovery of 118 new ultracool dwarf candidates, discovered using a new machine learning tool, named SMDET, applied to time series images from the Wide-field Infrared Survey Explorer.
We gathered photometric and astrometric data to estimate each candidate’s spectral type, distance, and tangential velocity. This sample has a photometrically estimated spectral class distribution of 28 M dwarfs, 64 L dwarfs, and 18 T dwarfs.
We also identify a T subdwarf candidate, two extreme T subdwarf candidates, and two candidate young ultracool dwarfs. Five objects did not have enough photometric data for any estimations to be made.
To validate our estimated spectral types, spectra were collected for 2 objects, yielding confirmed spectral types of T5 (estimated T5) and T3 (estimated T4). Demonstrating the effectiveness of machine learning tools as a new large-scale discovery technique.
Hunter Brooks, Dan Caselden, J. Davy Kirkpatrick, Yadukrishna Raghu, Charles Elachi, Jake Grigorian, Asa Trek, Andrew Washburn, Hiro Higashimura, Aaron Meisner, Adam Schneider, Jacqueline Faherty, Federico Marocco, Christopher Gelino, Jonathan Gagné, Thomas Bickle, Shih-yun Tang, Austin Rothermich, Adam Burgasser, Marc J. Kuchner, Paul Beaulieu, John Bell, Guillaume Colin, Giovanni Colombo, Alexandru Dereveanco, Deiby Flores, Konstantin Glebov, Leopold Gramaize, Les Hamlet, Ken Hinckley, Martin Kabatnik, Frank Kiwy, David Martin, Raul Palma, William Pendrill, Lizzeth Ruiz, John Sanchez, Arttu Sainio, JÖrg SchÜmann, Manfred Schonau, Christopher Tanner, Nikolaj Stevnbak Andersen, Andrés Stenner, Melina Thévenot, Vinod Thakur, Nikita Voloshin, And Zbigniew Wedracki
Comments: 14 pages, 8 figures, 2 tables, extended table 1, accepted to American Astronomical Journal
Subjects: Solar and Stellar Astrophysics (astro-ph.SR); Earth and Planetary Astrophysics (astro-ph.EP); Astrophysics of Galaxies (astro-ph.GA); Instrumentation and Methods for Astrophysics (astro-ph.IM)
Cite as: arXiv:2408.14447 [astro-ph.SR] (or arXiv:2408.14447v1 [astro-ph.SR] for this version)
https://doi.org/10.48550/arXiv.2408.14447
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Submission history
From: Hunter Brooks
[v1] Mon, 26 Aug 2024 17:37:38 UTC (6,979 KB)
https://arxiv.org/abs/2408.14447
Astrobiology, astrochemistry
