The VISTA Variables in the Via Lactea (VVV) survey and its extension, have been monitoring about 560 square degrees of sky centred on Galactic bulge inner disc for nearly a decade. photometric catalogue contains order 10$^9$ sources monitored K$_s$ band down to 18 mag over hundreds epochs from 2010-2019. Using these data we develop decision tree classifier identify microlensing events. As input...

Carotenoids are a family of about 700 fat-soluble molecules that are only produced by phytoplankton, algae, plants, and a limited number of fungi and bacteria. Beta-carotene was named after its isolation from carrots and is probably the most familiar carotenoid. It is categorized as a ‘carotene’ whereas other carotenoids with additional oxygenated groups, such as lutein, are ‘xanthophyll’ (ZAN-...