The advent of the second data release of the Gaia mission, in combination with data from
large spectroscopic surveys, is revolutionizing our understanding of the Galaxy. Thanks to …

This paper documents the seventeenth data release (DR17) from the Sloan Digital Sky
Surveys; the fifth and final release from the fourth phase (SDSS-IV). DR17 contains the …

The Sloan Digital Sky Surveys (SDSS) have been almost continuously observing the skies
for over 20 yr, since the project began with a first phase in 1998 (SDSS-I; York et al. 2000) …

We present a new three-dimensional map of dust reddening, based on Gaia parallaxes and
stellar photometry from Pan-STARRS 1 and 2MASS. This map covers the sky north of a decl …

For the vast majority of stars in the second Gaia data release, reliable distances cannot be
obtained by inverting the parallax. A correct inference procedure must instead be used to …

It is now 16 years since the first data release from the Sloan Digital Sky Survey (SDSS; York
et al. 2000). This Early Data Release, or EDR, occurred in 2001 June (Stoughton et al …

Context. The second Gaia data release (DR2) contains very precise astrometric and
photometric properties for more than one billion sources, astrophysical parameters for …

Combining the precise parallaxes and optical photometry delivered by Gaia's second data
release with the photometric catalogues of Pan-STARRS1, 2MASS, and AllWISE, we …

Recent work indicates that the nearby Galactic halo is dominated by the debris from a major
accretion event. We confirm that result from an analysis of APOGEE-DR14 element …

We analyse an N-body simulation of the interaction of the Milky Way (MW) with a Sagittarius-
like dSph (Sgr), looking for signatures which may be attributed to its orbital history in the …