Beyond the Local Volume. II. Population Scaleheights and Ages of Ultracool Dwarfs in Deep HST/WFC3 Parallel Fields

Understand

Ultracool dwarfs represent a significant proportion of stars in the Milky Way,and deep samples of these sources have the potential to constrain the formation history and evolution of low-mass objects in the Galaxy.

• Until recently, spectral samples have been limited to the local volume (d<100 pc).
• Here, we analyze a sample of 164 spectroscopically-characterized ultracool dwarfs identified by Aganze et al.
• (2022) in the Hubble Space Telescope WFC3 Infrared Spectroscopic Parallel (WISP) Survey and 3D-HST.