Speaker
Description
JASMINE is an infrared space-based telescope mission being planned in Japan. The telescope is expected to orbit around the Earth and to observe microlensing events in parallax with other space-based telescopes located away from the Earth, such as Roman. As of now, the proposed JASMINE's target regime can support one of the Roman's observation fields close to the Galactic center, and its cadence and exposure time for the microlensing event observation are subject to change. Here, we test and propose a reasonable combination of the cadence and exposure time, particularly with the aim of exoplanet detection. We find two reasonable combinations: $15$-minute cadence for $100$-second exposure, and $25$-minute cadence for $30$-second exposure. These settings of the cadence and exposure time are expected to detect $\sim120$ bound exoplanets and a few thousand free-floating planets during the simultaneous operation with Roman and JASMINE. Because the observation close to the Galactic center is difficult due to a strong extinction, JASMINE's follow-up is worth accepting. It will support an increase in the number of examples for the study of exoplanet demographics.
