Abstract Details

Name: Bharat Kumar Yerra
Affiliation: National Astronomical Observatories, Chinese Academy of Sciences
Conference ID: ASI2021_574
Title : Evolution of Lithium in low-mass stars: an observational perspective
Authors and Co-Authors : Yerra Bharat Kumar (National Astronomical Observatories, Chinese Academy of Sciences)
Abstract Type : Invited
Abstract Category : Stars, ISM and Galaxy
Abstract : Lithium is a fragile element and a sensitive probe to non-standard processes occurring in stellar interiors--lithium anomaly found in different phases of low mass star's evolution. The overabundance of lithium in low-mass red giants has been a topic of interest for over four decades. Low-mass stars expected to destroy lithium gradually throughout their lifetimes. Against this expectation, about 1% of red giants in the Galaxy show anomalously large Li which, in the literature, are known as lithium-rich giants. The advent of large-scale stellar surveys enabled to find important clues about Li enhancement origin in red giants. These new studies suggest Li enhancement is mostly associated with the red clump phase, post-He-flash of low mass star's life. Recently, we found that all red clump stars are having high levels of Li. In this talk, we will describe our recent results along with current updates in the field.