532 citations · 10.5k across the 216 of their papers we have counts for
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OGLE-2016-BLG-1190Lb: First Spitzer Bulge Planet Lies Near the Planet/Brown-Dwarf Boundary
Y. -H. Ryu, J. C. Yee, A. Udalski +106
We report the discovery of OGLE-2016-BLG-1190Lb, which is likely to be the first Spitzer microlensing planet in the Galactic bulge/bar, an assignation that can be confirmed by two…
OGLE-2015-BLG-1459L: The Challenges of Exo-Moon Microlensing
K. -H. Hwang, A. Udalski, I. A. Bond +57
We show that dense OGLE and KMTNet -band survey data require four bodies (sources plus lenses) to explain the microlensing light curve of OGLE-2015-BLG-1459. However, these can…
Kilonova from post-merger ejecta as an optical and near-infrared counterpart of GW170817
Masaomi Tanaka, Yousuke Utsumi, Paolo A. Mazzali +42
Recent detection of gravitational waves from a neutron star (NS) merger event GW170817 and identification of an electromagnetic counterpart provide a unique opportunity to study th…
J-GEM observations of an electromagnetic counterpart to the neutron star merger GW170817
Yousuke Utsumi, Masaomi Tanaka, Nozomu Tominaga +57
The first detected gravitational wave from a neutron star merger was GW170817. In this study, we present J-GEM follow-up observations of SSS17a, an electromagnetic counterpart of G…
Subaru Hyper Suprime-Cam Survey for An Optical Counterpart of GW170817
Nozomu Tominaga, Masaomi Tanaka, Tomoki Morokuma +31
We perform a -band survey for an optical counterpart of a binary neutron star coalescence GW170817 with Subaru/Hyper Suprime-Cam. Our untargeted transient search covers d…
An Isolated Microlens Observed from K2, Spitzer and Earth
Wei Zhu, A. Udalski, C. Huang +50
We present the result of microlensing event MOA-2016-BLG-290, which received observations from the two-wheel Kepler (K2), Spitzer, as well as ground-based observatories. A joint an…
OGLE-2016-BLG-0263L\lowercase{b}: Microlensing Detection of a Very Low-mass Binary Companion Through a Repeating Event Channel
C. Han, A. Udalski, A. Gould +51
We report the discovery of a planet-mass companion to the microlens OGLE-2016-BLG-0263L. Unlike most low-mass companions that were detected through perturbations to the smooth and…
Pupil Masks for Spectrophotometry of Transiting Exoplanets
Satoshi Itoh, Taro Matsuo, Shohei Goda +2
Spectrophotometric stability, which is crucial in the spectral characterization of transiting exoplanets, is affected by photometric variations arising from field-stop loss in spac…
The First Planetary Microlensing Event with Two Microlensed Source Stars
D. P. Bennett, A. Udalski, C. Han +64
We present the analysis of microlensing event MOA-2010-BLG-117, and show that the light curve can only be explained by the gravitational lensing of a binary source star system by a…
The First Eclipsing Binary Catalogue from the MOA-II database
M. C. A. Li, N. J. Rattenbury, A. Bond +25
We present the first catalogue of eclipsing binaries in two MOA fields towards the Galactic bulge, in which over 8,000 candidates, mostly contact and semi-detached binaries of peri…
OGLE-2016-BLG-1469L: Microlensing Binary Composed of Brown Dwarfs
C. Han, A. Udalski, T. Sumi +50
We report the discovery of a binary composed of two brown dwarfs, based on the analysis of the microlensing event OGLE-2016-BLG-1469. Thanks to detection of both finite-source and…
MOA-2016-BLG-227Lb: A Massive Planet Characterized by Combining Lightcurve Analysis and Keck AO Imaging
Naoki Koshimoto, Yossi Shvartzvald, David Bennett +55
We report the discovery of a microlensing planet --- MOA-2016-BLG-227Lb --- with a large planet/host mass ratio of . This event was located near the …
MOA Data Reveal a New Mass, Distance, and Relative Proper Motion for Planetary System OGLE-2015-BLG-0954L
D. P. Bennett, I. A. Bond, F. Abe +26
We present the MOA Collaboration light curve data for planetary microlensing event OGLE-2015-BLG-0954, which was previously announced in a paper by the KMTNet and OGLE Collaboratio…
OGLE-2016-BLG-1003: First Resolved Caustic-crossing Binary-source Event Discovered by Second-generation Microlensing Surveys
Y. K. Jung, A. Udalski, I. A. Bond +50
We report the analysis of the first resolved caustic-crossing binary-source microlensing event OGLE-2016-BLG-1003. The event is densely covered by the round-the-clock observations…
OGLE-2013-BLG-0132Lb and OGLE-2013-BLG-1721Lb: Two Saturn-mass Planets Discovered around M-dwarfs
Przemek Mroz, A. Udalski, I. A. Bond +37
We present the discovery of two planetary systems consisting of a Saturn-mass planet orbiting an M-dwarf, which were detected in faint microlensing events OGLE-2013-BLG-0132 and OG…
A companion on the planet/brown dwarf mass boundary on a wide orbit discovered by gravitational microlensing
R. Poleski, A. Udalski, I. A. Bond +40
We present the discovery of a substellar companion to the primary host lens in the microlensing event MOA-2012-BLG-006. The companion-to-host mass ratio is 0.016, corresponding to…
OGLE-2013-BLG-1761Lb: A Massive Planet Around an M/K Dwarf
Y. Hirao, A. Udalski, T. Sumi +37
We report the discovery and the analysis of the planetary microlensing event, OGLE-2013-BLG-1761. There are some degenerate solutions in this event because the planetary anomaly is…
The Lowest Mass Ratio Planetary Microlens: OGLE 2016-BLG-1195Lb
I. A. Bond, D. P. Bennett, T. Sumi +37
We report discovery of the lowest mass ratio exoplanet to be found by the microlensing method in the light curve of the event OGLE~2016--BLG--1195. This planet revealed itself as a…
Chemical evolution of the Galactic bulge as traced by microlensed dwarf and subgiant stars. VI. Age and abundance structure of the stellar populations in the central sub-kpc of the Milky Way
T. Bensby, S. Feltzing, A. Gould +29
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 gravitation…
A Detailed Observational Analysis of V1324 Sco, the Most Gamma-Ray Luminous Classical Nova to Date
Thomas Finzell, Laura Chomiuk, Brian D. Metzger +32
It has recently been discovered that some, if not all, classical novae emit GeV gamma rays during outburst, but the mechanisms involved in the production of the gamma rays are stil…
Microlensing constraints on primordial black holes with the Subaru/HSC Andromeda observation
Hiroko Niikura, Masahiro Takada, Naoki Yasuda +8
Primordial black holes (PBHs) have long been suggested as a viable candidate for the elusive dark matter (DM). The abundance of such PBHs has been constrained using a number of ast…