Proper motions of field L and T dwarfs

TL;DR

This paper presents proper motion measurements for 143 L and T dwarfs, identifies high velocity objects, new binary systems, and potential members of nearby stellar moving groups, enhancing understanding of their kinematics and origins.

Contribution

It provides the first comprehensive proper motion catalog for these dwarfs and identifies new binary systems and potential moving group members.

Findings

8 high velocity L dwarfs identified

4 new wide binary/multiple systems discovered

Potential members of Ursa Major, Hyades, and Pleiades groups found

Abstract

The proper motion measurements for 143 previously known L and T dwarfs are presented. From this sample we identify and discuss 8 high velocity L dwarfs. We also find 4 new wide common proper motion binaries/multiple systems. Using the moving cluster methods we have also identified a number of L dwarfs that may be members of the Ursa Major (age ~400 Myr), the Hyades (age ~625 Myr) and the Pleiades (age ~125 Myr) moving groups.