A theoretical calculation of atomic parameters for the transitions of Si II

Wu, Mengjun; He, Zhencen; Hu, Feng; Li, Xiangfu

doi:10.1007/s12648-020-01771-x

Cited by 1 publication

(1 citation statement)

References 35 publications

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“…It can be seen from this figure that the general level of agreement between experiment and theory has improved dramatically over recent decades, undoubtedly owing, at least in part, to the rapid increase in computing power. We see particularly excellent agreement between our study and the recent theoretical results of Wu et al (2020) and PR18 as well as that of Froese Fischer et al (2006).…”

Section: Si II Resultssupporting

confidence: 92%

Atomic Transition Probabilities for Transitions of Si i and Si ii and the Silicon Abundances of Several Very Metal-poor Stars ^∗

Hartog¹,

Lawler²,

Sneden³

et al. 2023

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We report new measurements of branching fractions for 20 UV and blue lines in the spectrum of neutral silicon (Si i) originating in the 3s 23p4s 3Po 1,2,1Po 1, and 3s3p 3 1Do 1,2 upper levels. Transitions studied include both strong, nearly pure LS multiplets as well as very weak spin-forbidden transitions connected to these upper levels. We also report a new branching fraction measurement of the 4P1/2–2Po 1/2,3/2 intercombination lines in the spectrum of singly ionized silicon (Si ii). The weak spin-forbidden lines of Si i and Si ii provide a stringent test on recent theoretical calculations, to which we make comparison. The branching fractions from this study are combined with previously reported radiative lifetimes to yield transition probabilities and log(gf) values for these lines. We apply these new measurements to abundance determinations in five metal-poor stars.

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Section: Si II Resultssupporting

confidence: 92%

Atomic Transition Probabilities for Transitions of Si i and Si ii and the Silicon Abundances of Several Very Metal-poor Stars ^∗

Hartog¹,

Lawler²,

Sneden³

et al. 2023

ApJS

View full text Add to dashboard Cite

show abstract

A theoretical calculation of atomic parameters for the transitions of Si II

Cited by 1 publication

References 35 publications

Atomic Transition Probabilities for Transitions of Si i and Si ii and the Silicon Abundances of Several Very Metal-poor Stars ^∗

Atomic Transition Probabilities for Transitions of Si i and Si ii and the Silicon Abundances of Several Very Metal-poor Stars ^∗

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A theoretical calculation of atomic parameters for the transitions of Si II

Cited by 1 publication

References 35 publications

Atomic Transition Probabilities for Transitions of Si i and Si ii and the Silicon Abundances of Several Very Metal-poor Stars ∗

Atomic Transition Probabilities for Transitions of Si i and Si ii and the Silicon Abundances of Several Very Metal-poor Stars ∗

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Atomic Transition Probabilities for Transitions of Si i and Si ii and the Silicon Abundances of Several Very Metal-poor Stars ^∗

Atomic Transition Probabilities for Transitions of Si i and Si ii and the Silicon Abundances of Several Very Metal-poor Stars ^∗