263 citations · 3.1k across the 111 of their papers we have counts for
17 papers · 1 filter
Kmt-2016-blg-1397b: Kmtnet-only discovery of a microlens giant planet
Weicheng Zang, Kyu-Ha Hwang, Hyoun-Woo Kim +20
We report the discovery of a giant planet in the KMT-2016-BLG-1397 microlensing event, which was found by The Korea Microlensing Telescope Network (KMTNet) alone. The time scale of…
OGLE-2015-BLG-1670Lb: A Cold Neptune beyond the Snow Line in the Provisional WFIRST Microlensing Survey Field
Clément Ranc, David P. Bennett, Yuki Hirao +56
We present the analysis of the microlensing event OGLE-2015-BLG-1670, detected in a high-extinction field, very close to the Galactic plane. Due to the dust extinction along the li…
KMT-2017-BLG-0165Lb: A Super-Neptune mass planet Orbiting a Sun-like Host Star
Youn Kil Jung, Andrew Gould, Weicheng Zang +22
We report the discovery of a low mass-ratio planet , i.e., 2.5 times higher than the Neptune/Sun ratio. The planetary system was discovered from the analysi…
Kepler-730b is probably a hot Jupiter with a small companion
Wei Zhu, Fei Dai, Kento Masuda
Here we draw attention to a candidate system with one hot Jupiter and one small, nearby companion, revealed by the recent Kepler data release (DR25). The hot Jupiter, Kepler-730b,…
Dark Passengers in Stellar Surveys
Almog Yalinewich, Paz Beniamini, Kenta Hotokezaka +1
We develop stellar population models to predict the number of binaries with a single luminous member is Gaia and Hipparcos. Our models yield dozens of detections of black hole - lu…
Velocity-resolved reverberation mapping of five bright Seyfert 1 galaxies
G. De Rosa, M. M. Fausnaugh, C. J. Grier +99
We present the first results from a reverberation-mapping campaign undertaken during the first half of 2012, with additional data on one AGN (NGC 3227) from a 2014 campaign. Our ma…
Influence of Stellar Metallicity on Occurrence Rates of Planets and Planetary Systems
Wei Zhu
We study the influence of stellar metallicity on the fraction of stars with planets (i.e., the occurrence rate of planetary systems) and the average number of planets per star (i.e…
Microlensing Parallax for OGLE-2017-BLG-0896 Reveals a Counter-Rotating Low-Mass Brown Dwarf
Yossi Shvartzvald, Jennifer C. Yee, Jan Skowron +63
The kinematics of isolated brown dwarfs in the Galaxy, beyond the solar neighborhood, is virtually unknown. Microlensing has the potential to probe this hidden population, as it ca…
The Super Earth-Cold Jupiter Relations
Wei Zhu, Yanqin Wu
We report relations between inner ( au) super Earths (planets with mass/radius between Earth and Neptune) and outer ( au) giant planets (mass , or cold Jupi…
MOA-2015-BLG-337: A Planetary System with a Low-mass Brown Dwarf/Planetary Boundary Host, or a Brown Dwarf Binary
S. Miyazaki, T. Sumi, D. P. Bennett +59
We report the discovery and the analysis of the short timescale binary-lens microlensing event, MOA-2015-BLG-337. The lens system could be a planetary system with a very low mass h…
Measurement of Source Star Colors with the K2C9-CFHT Multi-color Microlensing Survey
Weicheng Zang, Matthew T Penny, Wei Zhu +8
K2 Campaign 9 (K2C9) was the first space-based microlensing parallax survey capable of measuring microlensing parallaxes of free-floating planet candidate microlensing events. Simu…
OGLE-2017-BLG-1522: A giant planet around a brown dwarf located in the Galactic bulge
Y. K. Jung, A. Udalski, A. Gould +27
We report the discovery of a giant planet in the OGLE-2017-BLG-1522 microlensing event. The planetary perturbations were clearly identified by high-cadence survey experiments despi…
KMT-2016-BLG-0212: First KMTNet-Only Discovery of a Substellar Companion
K. -H. Hwang, H. -W. Kim, D. -J. Kim +18
We present the analysis of KMT-2016-BLG-0212, a low flux-variation ) microlensing event, which is well-covered by high-cadence data from the three Korea M…
OGLE-2016-BLG-1266: A Probable Brown-Dwarf/Planet Binary at the Deuterium Fusion Limit
M. D. Albrow, J. C. Yee, A. Udalski +33
We report the discovery, via the microlensing method, of a new very-low-mass binary system. By combining measurements from Earth and from the Spitzer telescope in Earth-trailing or…
About 30% of Sun-like Stars Have Kepler-like Planetary Systems: A Study of their Intrinsic Architecture
Wei Zhu, Cristobal Petrovich, Yanqin Wu +2
We constrain the intrinsic architecture of Kepler planetary systems by modeling the observed multiplicities of the transiting planets (tranets) and their transit timing variations…
The KMTNet/K2-C9 (Kepler) Data Release
H. -W. Kim, K. -H. Hwang, D. -J. Kim +18
We present Korea Microlensing Telescope Network (KMTNet) light curves for microlensing-event candidates in the Kepler K2 C9 field having peaks within 3 effective timescales of the…
OGLE-2016-BLG-1045: A Test of Cheap Space-Based Microlens Parallaxes
I. -G. Shin, A. Udalski, J. C. Yee +35
Microlensing is a powerful and unique technique to probe isolated objects in the Galaxy. To study the characteristics of these interesting objects based on the microlensing method,…