Discovery of 16 New Members of the Solar Neighborhood Using Proper Motions from CatWISE2020

March 2022 • 2022AJ....163..116K

Authors • Kota, Tarun • Kirkpatrick, J. Davy • Caselden, Dan • Marocco, Federico • Schneider, Adam C. • Gagné, Jonathan • Faherty, Jacqueline K. • Meisner, Aaron M. • Kuchner, Marc J. • Casewell, Sarah • Kacholia, Kanishk • Bickle, Tom • Beaulieu, Paul • Colin, Guillaume • Hamlet, Leslie K. • Schümann, Jörg • Tanner, Christopher • Backyard Worlds: Planet 9 Collaboration

Abstract • In an effort to identify nearby and unusual cold objects in the solar neighborhood, we searched for previously unidentified moving objects using CatWISE2020 proper motion data combined with machine learning methods. We paired the motion candidates with their counterparts in 2MASS, UHS, and VHS. Then we searched for white dwarf, brown dwarf, and subdwarf outliers on the resulting color-color diagrams. This resulted in the discovery of 16 new dwarfs, including 2 nearby M dwarfs (<30 pc), a possible young L dwarf, a high-motion early-T dwarf, and 3 later-T dwarfs. This research represents a step forward in completing the census of the Sun's neighbors.


IPAC Authors


Davy Kirkpatrick

Senior Scientist

Federico Marocco

Assistant Scientist