We present a comprehensive overview of a volume-complete sample of white dwarfs
located within 40 pc of the Sun, a significant proportion of which were detected in Gaia Data …

Using new spectra of 88 K-and M-type subdwarfs, we consider novel methods for assigning
their spectral types and take steps toward developing a comprehensive spectral sequence …

Following the discovery of the T8 subdwarf WISE J200520. 38+ 542433.9 (Wolf 1130C),
which has a proper motion in common with a binary (Wolf 1130AB) consisting of an M …

We present a new sample of M subdwarfs compiled from the seventh data release of the
Sloan Digital Sky Survey. With 3517 new subdwarfs, this new sample significantly increases …

We present the chromospheric activity (CA) levels, metallicities, and full space motions for
41 F, G, K, and M dwarf stars in 36 wide binary systems. Thirty-one of the binaries contain a …

Red subdwarfs in binary systems are crucial for both model calibration and spectral
classification. We search for red subdwarfs in binary systems from a sample of high proper …

We present a statistical parallax study of nearly 2000 M subdwarfs with photometry and
spectroscopy from the Sloan Digital Sky Survey (SDSS). Statistical parallax analysis yields …

The aim of the Degenerate Objects around Degenerate Objects (DODO) survey is to search
for very low-mass brown dwarfs and extrasolar planets in wide orbits around white dwarfs …

Parallaxes, proper motions, and optical photometry are presented for 51 systems consisting
of 37 cool subdwarf and 14 additional high proper motion systems. Thirty-seven systems …

Ultra-cool white dwarfs are among the oldest stellar remnants in the Universe. Their efficient
gravitational settling and low effective temperatures are responsible for the smooth spectra …