2020
DOI: 10.1038/s41550-020-1139-7
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Discovery of ubiquitous lithium production in low-mass stars

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Cited by 64 publications
(123 citation statements)
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“…With the new more reliable data from GALAH+ DR3, more scenarios of Li production during binary interaction or the He-flash in giant stars (see e.g. Casey et al 2019;Kumar et al 2020) can be tested more reliably, indicating that lithium-rich giant stars require multiple formation channels (Martell et al 2020).…”
Section: Galactic and Stellar Chemical Evolutionmentioning
confidence: 99%
“…With the new more reliable data from GALAH+ DR3, more scenarios of Li production during binary interaction or the He-flash in giant stars (see e.g. Casey et al 2019;Kumar et al 2020) can be tested more reliably, indicating that lithium-rich giant stars require multiple formation channels (Martell et al 2020).…”
Section: Galactic and Stellar Chemical Evolutionmentioning
confidence: 99%
“…With the new more reliable data from GALAH+ DR3, more scenarios of Li production during binary interaction or the He-flash in giant stars (see e.g. Casey et al 2019;Kumar et al 2020) can be tested more reliably, indicating that lithium-rich giant stars require multiple formation channels (Martell et al 2020).…”
Section: Galactic and Stellar Chemical Evolutionmentioning
confidence: 99%
“…The short time-scales relevant to RC stars, and the time-scale differences between pRC and sRC stars, provide some useful insights into lithium enrichment and redepletion. The helium-burning lifetime of pRC stars is only ≈100 Myr (Girardi 1999), so if there is a universal lithium production process that occurs at the helium flash, as suggested by Kumar et al (2020), the lithium redepletion must be fast enough that 98.4 per cent of pRC stars descend to 0.5 < A Li < 1.5 in that time. At the beginning of their heliumburning phase, the sRC stars all have ages of ≈1 Gyr because only stars in a small range of mass and metallicity pass through the sRC, In all panels, we show the stars classified as RC or RGB by the isochrone-based BSTEP method (dots) and the asteroseismic classifications (black-edged star symbols).…”
Section: Lithium-rich Giants Across the Stellar Parameter Spacementioning
confidence: 99%
“…Recent work by Kumar et al (2020) indicates that lithium enrichment at the helium flash may be compulsory, given the lack of very lithium-depleted RC stars in their data set. This provides an intriguing and testable prediction for RC stars as a population, and may provide new insights into the internal rearrangement that happens as a result of the helium flash.…”
Section: T H E O R I G I N S O F L I T H I U M E N R I C H M E N T I N E Vo Lv E D S Ta R Smentioning
confidence: 99%
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