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19942026
most citedChemical evolution of the Galactic bulge as traced by microlensed dwarf and subgiant stars. V. Evidence for a wide age distribution and a complex MDF

494 citations · 6.9k across the 258 of their papers we have counts for

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14 papers · 1 filter

astro-ph.SR2024

KMT-2021-BLG-0284, KMT-2022-BLG-2480, and KMT-2024-BLG-0412: Three microlensing events involving two lens masses and two source stars

Cheongho Han, Andrzej Udalski, Ian A. Bond +59

We carried out a project involving the systematic analysis of microlensing data from the Korea Microlensing Telescope Network survey. The aim of this project is to identify lensing…

astro-ph.EP2024

KMT-2024-BLG-1044L: A sub-Uranus microlensing planet around a host at the star-brown dwarf mass boundary

Cheongho Han, Yoon-Hyun Ryu, Chung-Uk Lee +14

We analysed microlensing data to uncover the nature of the anomaly that appeared near the peak of the short-timescale microlensing event KMT-2024-BLG-1044. Despite the anomaly's br…

astro-ph.IM2024★ 4 cited

Observations of Microlensed Images with Dual-field Interferometry: On-sky Demonstration and Prospects

P. Mroz, S. Dong, A. Merand +57

Interferometric observations of gravitational microlensing events offer an opportunity for precise, efficient, and direct mass and distance measurements of lensing objects, especia…

astro-ph.SR2024

Microlensing brown-dwarf companions in binaries detected during the 2022 and 2023 seasons

Cheongho Han, Ian A. Bond, Andrzej Udalski +63

Building on previous works to construct a homogeneous sample of brown dwarfs in binary systems, we investigate microlensing events detected by the Korea Microlensing Telescope Netw…

astro-ph.EP2024

KMT-2021-BLG-2609Lb and KMT-2022-BLG-0303Lb: Microlensing planets identified through signals produced by major-image perturbations

Cheongho Han, Michael D. Albrow, Chung-Uk Lee +18

We investigate microlensing data collected by the Korea Microlensing Telescope Network (KMTNet) survey. Our investigation reveals that the light curves of two lensing events, KMT-2…

astro-ph.GA2024

Analysis of the full Spitzer microlensing sample I: Dark remnant candidates and Gaia predictions

Krzysztof A. Rybicki, Yossi Shvartzvald, Jennifer C. Yee +70

In the pursuit of understanding the population of stellar remnants within the Milky Way, we analyze the sample of microlensing events observed by the Spitzer Space Teles…