English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Context. In the advent of new infrared, high-resolution spectrometers,accurate and precise atomic data in the infrared is urgently needed.Identifications, wavelengths, strengths, broadening and hyper-fine splittingparameters of stellar lines in the near-IR are in many cases not accurateenough to model observed spectra, and in other cases even non existing. Somestellar features are unidentified. Aims. The aim with this work is to identifya spectral feature at lambda(vac) = 1063.891 nm or lambda(air) = 1063.600 nmseen in spectra of stars of different spectral types, observed with the GIANO-Bspectrometer. Methods. Searching for spectral lines to match the unidentifiedfeature in linelists from standard atomic databases was not successful.However, by investigating the original, published laboratory data we were ableto identify the feature and solve the problem. To confirm its identification,we model the presumed stellar line in the solar intensity spectrum and find anexcellent match. Results. We find that the observed spectral feature is astellar line originating from the 4s'-4p' transition in S I, and that thereason for its absence in atomic line databases is a neglected air-to-vacuumcorrection in the original laboratory measurements from 1967 for this lineonly. From interpolation we determine the laboratory wavelength of the S I lineto be lambda(vac) = 1063.8908 nm or lambda(air) = 1063.5993 nm, and theexcitation energy of the upper level to be 9.74978 eV.

Stellar Population Astrophysics (SPA) with the TNG: Identification of a Sulphur line at lambda(air) = 1063.600nm in GIANO-B stellar spectra