Using the photometric parallax method we estimate the distances to∼ 48 million stars detected
by the Sloan Digital Sky Survey (SDSS) and map their three-dimensional number density …

We present observations of the unusual microlensing event OGLE 2003-BLG-235/MOA
2003-BLG-53. In this event, a short-duration (∼ 7 days) low-amplitude deviation in the light …

Most known extrasolar planets (exoplanets) have been discovered using the radial velocity
1 , 2 or transit 3 methods. Both are biased towards planets that are relatively close to their …

We describe observations carried out by the MOA group of the Galactic bulge during 2000
that were designed to detect efficiently gravitational microlensing of faint stars in which the …

… This bypass scheme has successfully diverted coarse sediment for more than 100 years
as described by Sumi et al. [2004]. At the Miwa and Asahi dams in Japan, the rivers are …

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 Galactic …

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

We analyze the data of the gravitational microlensing survey carried out by the Microlensing
Observations in Astrophysics (MOA) group during 2000 toward the Galactic bulge (GB). Our …

… Note that if the summation range is outside the observation window, we take the range |t
0 ± (t 0 − t start )| or |t 0 ± (t end − t 0 )|, where t start or t end is the start or end time of the light …

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 …