J/A+A/671/A130ivo://CDS.VizieR/J/A+A/671/A130doi:10.26093/cds/vizier.36710130CDSPietrow A.G.M.Kiselman D.Adriienko O.Petit dit de la Roche D.J.M.,Diaz BasoC. J.Calvo F.2024-11-28T20:02:29Z2023-03-17T09:27:18ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frthe-sunspectroscopyObservations 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 (CaII H & K, H{beta}, MgI 5173{AA}, CI 5380{AA}, FeI 6173{AA}, FeI 6301{AA}, H{alpha}, OI 7772{AA}, and CaII 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.2023A&A...671A.130Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/671/A130CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/671/A130https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/671/A130http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/671/A130https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/671/A130https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/671/A130http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/671/A130GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/671/A130/cont7771Continuum values of the 7771 angstrom continuumrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIntIntensityphot.flux;em.opt;arith.ratiodoublemumu angle (cosine of the heliocentric angle)stat.fit.paramdoubleInt-varstd per mu anglestat.stdevdoubleInt-contamount of pixels that was averaged overmeta.notedoubleJ/A+A/671/A130/listList of fits files of limb-darkening curves and continua commonly observed with the SSTrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFileNameName of the fits file in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the filemeta.title;meta.filechar