Results 31 to 40 of about 1,819 (116)
OGLE-2016-BLG-1195 AO: Lens, Companion to Lens or Source, or None of the Above?
The Astronomical Journal, 2023 We systematically investigate Vandorou et al.’s claim to have detected the host star of the low-mass-ratio ( q < 10 ^−4 ) microlensing planet OGLE-2016-BLG-1195Lb, via Keck adaptive optics (AO) measurements Δ t = 4.12 yr after the event’s peak ( t _0 ...
Andrew Gould +6 more
doaj +1 more source
The Astronomical Journal, 2023 Wavelets are waveform functions that describe transient and unstable variations, such as noise. In this work, we study the advantages of discrete and continuous wavelet transforms (DWTs and CWTs) of microlensing data to denoise them and extract their ...
Sedighe Sajadian, Hossein Fatheddin
doaj +1 more source
Exoplanet Detection Techniques [PDF]
, 2014 We are still in the early days of exoplanet discovery. Astronomers are beginning to model the atmospheres and interiors of exoplanets and have developed a deeper understanding of processes of planet formation and evolution.
Fischer, Debra A. +6 more
core +3 more sources
The Astronomical Journal, 2023 We report the discoveries of low-mass free-floating planet (FFP) candidates from the analysis of 2006–2014 MOA-II Galactic bulge survey data. In this data set, we found 6111 microlensing candidates and identified a statistical sample consisting of 3535 ...
Naoki Koshimoto +31 more
doaj +1 more source
Microlensing path parametrization for Earth-like Exoplanet detection around solar mass stars
, 2018 We propose a new parametrization of the impact parameter u0 and impact angle {\alpha} for microlensing systems composed by an Earth-like Exoplanet around a Solar mass Star at 1 AU.
de Almeida, L., Nascimento Jr, J. -D. do
core +2 more sources
The Astrophysical Journal Supplement Series, 2023 To overcome the high optical extinction, near-infrared (NIR) observations are needed for probing the microlensing events toward the Galactic center. The 2015–2019 UKIRT microlensing survey toward the Galactic center is the first dedicated precursor NIR ...
Yongxin Wen, Weicheng Zang, Bo Ma
doaj +1 more source
GravityCam: higher resolution visible wide-field imaging [PDF]
, 2018 The limits to the angular resolution has, during the latest 70 years, been obtainable from the ground only through extremely expensive adaptive optics facilities at large telescopes, and covering extremely small spatial areas per exposure.
Downing +7 more
core +1 more source
Prediction of Planet Yields by the PRime-focus Infrared Microlensing Experiment Microlensing Survey
The Astronomical Journal, 2023 The PRime-focus Infrared Microlensing Experiment (PRIME) will be the first to conduct a dedicated near-infrared microlensing survey by using a 1.8 m telescope with a wide field of view of 1.45 deg ^2 at the South African Astronomical Observatory.
Iona Kondo +5 more
doaj +1 more source
Ongoing astrometric microlensing events from VVV and Gaia [PDF]
, 2019 6 pages, 2 figures, accepted MNRAS LettersWe extend predictive microlensing event searches using the Vista Variables in the Via Lactea survey and the second Gaia data release.
Belokurov, Vasily +4 more
core +3 more sources
The Microlensing Planet Finder: Completing the Census of Extrasolar Planets in the Milky Way
, 2004 The Microlensing Planet Finder (MPF) is a proposed Discovery mission that will complete the first census of extrasolar planets with sensitivity to planets like those in our own solar system.
+24 more
core +1 more source