Characterizing microlensing planetary system OGLE-2014-BLG-0676Lb with adaptive optics imaging

Xiao Jia Xie, Subo Dong, Yossi Shvartzvald, Andrew Gould, Andrzej Udalski, Jean Philippe Beaulieu, Charles Beichman, Laird Miller Close, Calen B. Henderson, Jared R. Males, Jean Baptiste Marquette, Katie M. Morzinski, Christopher R. Gelino

Research output: Contribution to journalArticlepeer-review


We constrain the host-star flux of the microlensing planet OGLE-2014-BLG-0676Lb using adaptive optics (AO) images taken by the Magellan and Keck telescopes. We measure the flux of the light blended with the microlensed source to be K = 16.79 0.04 mag and J = 17.76 0.03 mag. Assuming that the blend is the lens star, we find that the host is a star at a distance of kpc, where the relatively large uncertainty in angular Einstein radius measurement is the major source of uncertainty. With mass of , the planet is likely a "super Jupiter"at a projected separation of AU, and a degenerate model yields a similar at a closer separation of AU. Our estimates are consistent with the previous Bayesian analysis based on a Galactic model. OGLE-2014-BLG-0676Lb belongs to a sample of planets discovered in a "second-generation"planetary microlensing survey and we attempt to systematically constrain host properties of this sample with high-resolution imaging to study the distribution of planets.

Original languageEnglish (US)
Article number303
JournalResearch in Astronomy and Astrophysics
Issue number12
StatePublished - Dec 2021


  • (stars:) planetary systems
  • gravitational lensing: micro
  • instrumentation: adaptive optics
  • instrumentation: high angular resolution

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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