The advantages of using a Lucky Imaging camera for observations of microlensing events

Sedighe Sajadian, Sohrab Rahvar, Martin Dominik, Markus Hundertmark

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

In this work, we study the advantages of using a Lucky Imaging camera for the observations of potential planetary microlensing events. Our aimis to reduce the blending effect and enhance exoplanet signals in binary lensing systems composed of an exoplanet and the corresponding parent star. We simulate planetary microlensing light curves based on present microlensing surveys and follow-up telescopes where one of them is equipped with a Lucky imaging camera. This camera is used at the Danish1.54-m follow-up telescope. Using a specific observational strategy, Foran Earth-mass planet in the resonance regime, where the detection probability in crowded-fields is smaller, lucky imaging observations improve the detection efficiency which reaches 2 per cent. Given the difficulty of detecting the signal of an Earth-mass planet incrowded-field imaging even in the resonance regime with conventional cameras, we show that Lucky Imaging can substantially improve the detection efficiency.
Original languageEnglish
Pages (from-to)3248-3259
Number of pages12
JournalMonthly Notices of the Royal Astronomical Society
Volume458
Early online date7 Mar 2016
DOIs
Publication statusPublished - 21 May 2016

Keywords

  • Gravitational lensing: micro
  • Instrumentation: high angular resolution
  • Methods: numerical
  • Planets and satellites: detection

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