Unlike most other planet-detection techniques, gravitational microlensing does not rely on
detection of photons from either the host or the planet. Rather, planets are discovered by …

Gravitational microlensing finds planets through their gravitational influence on the light
coming from a more distant background star. The presence of the planet is then inferred from …

We combine VI photometry from OGLE-III with VISTA Variables in The Via Lactea survey and
Two Micron All Sky Survey measurements of E (J− K s) to resolve the longstanding problem …

Based on high-resolution spectra obtained during gravitational microlensing events we
present a detailed elemental abundance analysis of 32 dwarf and subgiant stars in the …

Abstract The Nancy Grace Roman Space Telescope (Roman) will perform a Galactic
Exoplanet Survey (RGES) to discover bound exoplanets with semimajor axes greater than 1 …

We present a detailed elemental abundance study of 90 F and G dwarf, turn-off, and
subgiant stars in the Galactic bulge. Based on high-resolution spectra acquired during …

We present the first measurement of the planet frequency beyond the “snow line,” for the
planet-to-star mass-ratio interval− 4. 5< log q<− 2, corresponding to the range of ice giants to …

Searches for extrasolar planets have uncovered an astonishing diversity of planetary
systems, yet the frequency of solar system analogs remains unknown. The gravitational …

Abstract The Wide Field InfraRed Survey Telescope (WFIRST) is the next NASA
astrophysics flagship mission, to follow the James Webb Space Telescope. The WFIRST …

Because of the development of large-format, wide-field cameras, microlensing surveys are
now able to monitor millions of stars with sufficient cadence to detect planets. These new …