Stellar halos may hold some of the best preserved fossils of the formation history of galaxies.
They are a natural product of the merging processes that probably take place during the …

We review recent determinations of the present‐day mass function (PDMF) and initial mass
function (IMF) in various components of the Galaxy—disk, spheroid, young, and globular …

We measure the total stellar halo luminosity using red giant branch (RGB) stars selected
from Gaia data release 2. Using slices in magnitude, colour, and location on the sky, we …

The stellar mass in the halo of the Milky Way is notoriously difficult to determine, owing to the
paucity of its stars in the solar neighbourhood. With tentative evidence from Gaia that the …

An improved proper-motion catalog is presented, combining the USNO-B and Sloan Digital
Sky Survey (SDSS) catalogs in the area of sky covered by SDSS Data Release 1 (DR1; …

A sample of white dwarfs is selected from the Sloan Digital Sky Survey (SDSS) Data
Release 3 using their reduced proper motions, based on improved proper motions from …

▪ Abstract A number of recent investigations suggest that cool white dwarfs are more
numerous than predicted by conventional Galactic models and that those stars make a …

We present Gemini GMOS and Magellan LDSS-3 optical spectroscopy for seven ultracool
subdwarf candidates color-selected from the Two Micron All Sky Survey. Five are identified …

I report the discovery of the second L subdwarf identified in the Two Micron All Sky Survey,
2MASS J16262034+ 3925190. This high proper motion object (μ= 1 farcs 27±0 farcs 03 yr …

Aims. Our goal is to characterise the physical properties of the metal-poor brown dwarf
population. In particular, we focus on the recently discovered peculiar dwarf WISE 1810055 …