Discovery of a bright microlensing event with planetary features towards the Taurus region: a super-Earth planet.

Licchelli D., Nucita A.A., De Paolis F., Ingrosso G., Strafella F.

III - Astrofisica
Aula 32B-3 - Mercoledì 19 h 09:00 - 13:00
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We report on the transient event labelled as TCP J05074264+2447555 which, recently discovered towards the Taurus region, was suddenly recognized as a microlensing event with a lens located at only 380 pc from Earth, thus making it the closest microlensing event observed so far. The event was located towards the anti-galactic center where the probability of occurrence of such events is extremely low. We also discovered planetary features and found that the lens is constituted by an Earth-like planet (Feynman-01 aka the Halloween super Earth) with most likely mass of 9.2 $\pm$ 6.6 $M_{\oplus}$ orbiting a $\simeq 0.25 M_{\odot}$ star. Future observations will allow to further constrain the lens parameters.

Società Italiana di Fisica - Via Saragozza 12 40123 Bologna P.IVA 00308310374 | credits