Discovery of a bright microlensing event with planetary features towards the Taurus region: a super Earth planet
A.A. Nucita, D. Licchelli, F. De Paolis, G. Ingrosso, F. Strafella, N., Katysheva, and S. Shugarov

TL;DR
This paper reports the discovery of a microlensing event in the Taurus region that reveals a binary lens system hosting a super Earth planet approximately 9 Earth masses, using high-cadence observations and detailed modeling.
Contribution
First detection of a planetary microlensing event in the Taurus region with detailed characterization of a super Earth planet and the lens system.
Findings
Identification of a super Earth planet with ~9 Earth masses.
Closest lens system at ~380 pc with a mass of ~0.25 solar masses.
Binary lens system with very low mass ratio components.
Abstract
The transient event labeled as TCP J05074264+2447555 recently discovered towards the Taurus region was quickly recognized to be an ongoing microlensing event on a source located at distance of only pc from Earth. Here, we show that observations with high sampling rate close to the time of maximum magnification revealed features that imply the presence of a binary lens system with very low mass ratio components. We present a complete description of the binary lens system which hosts an Earth-like planet with most likely mass of M. Furthermore, the source estimated location and detailed Monte Carlo simulations allowed us to classify the event as due to the closest lens system, being at a distance of pc and mass M.
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