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- W4310997622 abstract "Observations of center-to-limb variations (CLV) of spectral lines and continua provide a good test for the accuracy of models of solar and stellar atmospheric structure and spectral-line formation. They are also widely used to constrain elemental abundances and are becoming increasingly important in atmospheric studies of exoplanets. However, only a few such data sets exist for chromospheric lines. We aim to create a set of standard profiles by means of mosaics made with the CRISP and CHROMIS instruments of the Swedish 1-m Solar Telescope (SST), as well as to explore the robustness of said profiles obtained using this method. For each spectral line we use a mosaic that ranges from the center to the limb. Each of these mosaics are averaged down to 50 individual spectral profiles, spaced by 0.02 in the $mu$ scale. These profiles are corrected for p-mode oscillations, and their line parameters (equivalent width, line shift, full-width at half-maximum, and line depth) are then compared against literature values where possible. We present a set of 50 average profiles that are spaced equidistantly along the cosine of the heliocentric angle ($mu$) by steps of 0.02 for five continuum points between 4001 and 7772 AA, as well as ten of the most commonly observed spectral lines at the SST (Ca II H & K, H$beta$, Mg I 5173 AA, C I 5380 AA, Fe I 6173 AA, Fe I 6301 AA, H$alpha$, O I 7772 AA, and Ca II 8542 AA). Center-to-limb variation of line profiles and continua are shared in the CDS as machine-readable tables; providing a quantitative constraint on theoretical models that aim to model stellar atmospheres." @default.
- W4310997622 created "2022-12-22" @default.
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- W4310997622 date "2022-12-07" @default.
- W4310997622 modified "2023-09-29" @default.
- W4310997622 title "Center-to-limb variation of spectral lines and continua observed with SST/CRISP and SST/CHROMIS" @default.
- W4310997622 doi "https://doi.org/10.48550/arxiv.2212.03991" @default.
- W4310997622 hasPublicationYear "2022" @default.
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