activity
20042026
most citedReddening and Extinction Toward the Galactic Bulge from OGLE-III: The Inner Milky Way's Rv ~ 2.5 Extinction Curve

590 citations · 10.9k across the 341 of their papers we have counts for

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Showing 2020Show all

19 papers · 1 filter

astro-ph.EP2020

OGLE-2017-BLG-1049: Another giant planet microlensing event

Yun Hak Kim, Sun-Ju Chung, A. Udalski +55

We report a giant exoplanet discovery in the microlensing event OGLE-2017-BLG-1049, which is a planet-host star mass ratio of and has a caustic crossin…

astro-ph.EP2020★ 70 cited

A terrestrial-mass rogue planet candidate detected in the shortest-timescale microlensing event

P. Mroz, R. Poleski, A. Gould +27

Some low-mass planets are expected to be ejected from their parent planetary systems during early stages of planetary system formation. According to planet-formation theories, such…

astro-ph.EP2020★ 41 cited

KMT-2017-BLG-2820 and the Nature of the Free-Floating Planet Population

Yoon-Hyun Ryu, Przemek Mróz, Andrew Gould +28

We report a new free-floating planet (FFP) candidate, KMT-2017-BLG-2820, with Einstein radius $θ_\e\simeq 6\,\muas$, lens-source relative proper motion $μ_\rel \simeq 8\,\masyr$, a…

astro-ph.EP2020★ 7 cited

OGLE-2018-BLG-0799Lb: a Planet with Spitzer Parallax

Weicheng Zang, Yossi Shvartzvald, Andrzej Udalski +73

We report the discovery and analysis of a planet in the microlensing event OGLE-2018-BLG-0799. The planetary signal was observed by several ground-based telescopes, and the planet-…

astro-ph.SR2020★ 22 cited

Gaia18aen: First symbiotic star discovered by Gaia

J. Merc, J. Mikołajewska, M. Gromadzki +20

Besides the astrometric mission of the Gaia satellite, its repeated and high-precision measurements serve also as an all-sky photometric transient survey. The sudden brightenings o…

astro-ph.SR2020★ 7 cited

OGLE-GAL-ACEP-091 -- The First Known Multi-Mode Anomalous Cepheid

I. Soszyński, R. Smolec, A. Udalski +12

Anomalous Cepheids (ACs) are metal-deficient, core-helium-burning pulsating stars with masses in the range 1.2-2.2 M_S. Until recently, all known ACs were pure single-mode pulsator…