Can stellar transport deplete lithium uniformly by a factor three? · revision history

Revision 2

Accepted · core change · record

Changes against revision 1:

Title
Can stellar transport deplete lithium uniformly by a factor three?
Plain
Inside stars, elements slowly sink and mix, which can carry lithium down to where it burns. The question is whether this happens by the same factor in every old star, as the flat plateau requires.
Precise · changed · core
Revision 1: For stars of $0.6 \text{ to } 0.8\,M_{\mathrm{sun}}$ with $[\mathrm{Fe}/\mathrm{H}] < -2$ and ages $12 \text{ to } 13\,\mathrm{Gyr}$, determine whether atomic diffusion plus convective-boundary and rotational mixing reduces surface $\mathrm{Li}/\mathrm{H}$ from ~5e-10 to ~1.6e-10 with star-to-star dispersion below $0.1\,\mathrm{dex}$, and reproduces the drop in Li below $[\mathrm{Fe}/\mathrm{H}] \sim -3$. Answer yes with a model calibrated on globular-cluster turnoff and subgiant stars, or no.
Revision 2: For stars of $0.6 \text{ to } 0.8\,M_{\mathrm{sun}}$ with $[\mathrm{Fe}/\mathrm{H}] < -2$ and ages $12 \text{ to } 13\,\mathrm{Gyr}$, determine whether atomic diffusion plus convective-boundary and rotational mixing reduces surface $\mathrm{Li}/\mathrm{H}$ from $\sim 5 \times 10^{-10}$ to $\sim 1.6 \times 10^{-10}$ with star-to-star dispersion below $0.1\,\mathrm{dex}$, and reproduces the drop in Li below $[\mathrm{Fe}/\mathrm{H}] \sim -3$. Answer yes with a model calibrated on globular-cluster turnoff and subgiant stars, or no.
Settled by
3D hydrodynamic and asteroseismically calibrated stellar models matched to lithium in globular cluster turnoff and subgiant stars.
Kind
well-posed
Answer type
yes-no
References
(empty)
Literature status
open
Status note
(empty)
Posed since
(empty)

Decisions