J/ApJ/707/482ivo://CDS.VizieR/J/ApJ/707/482doi:10.26093/cds/vizier.17070482CDSFontenla J.M.Curdt W.Haberreiter M.Harder J.Tian H.2017-06-13T11:09:26Z2012-01-26T12:07:32ZCDS support team

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

cds-question@unistra.frthe-sunastronomical-modelsstellar-atmospheresultraviolet-astronomySemiempirical atmospheric models of solar surface features as observed at moderate resolution are useful tools for understanding the observed solar spectral irradiance variations. Paper I described a set of models constructed to reproduce the observed radiance spectrum for solar surface features at ~2 arcsec resolution that constitute an average over small-scale features such as granulation. Paper II showed that a revision of previous models of low-chromospheric inter-network regions explains the observed infrared CO lines in addition to the UV and radio continuum from submillimeter to centimetric wavelengths. The present paper (1) shows that the CaII H and K line wing observations are also explained by the new quiet-Sun-composite model, (2) introduces new low-chromospheric models of magnetic features that follow the ideas in Paper II (Fontenla et al. 2007ApJ...667.1243F), (3) introduces new upper chromospheric structures for all quiet-Sun and active-region models, and (4) shows how the new set of models explains EUV/FUV observations of spectral radiance and irradiance. This paper also discusses the chromospheric radiative-loss estimates in each of the magnetic features. The new set of models provides a basis for the spectral irradiance synthesis at EUV/FUV wavelengths based on the features observed on the solar surface.2009ApJ...707..482Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/707/482CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/531/A173 : Spectroscopy of CaII-H line at solar limb (Beck+, 2011)J/A+A/493/1099 : CaII HK emission in rapidly rotating stars (Schroeder+, 2009)J/A+A/423/1109 : Center-to-limb variation of quiet Sun (Allende+, 2004)J/A+A/375/591 : SUMER Spectral Atlas of Solar Disk Features (Curdt+, 2001)J/A+AS/126/281 : Solar disk spectrum (660-1175A) (Curdt+ 1997)http://www.digidyna.com/ : Solar Radiation Physical Modeling pagehttp://lasp.colorado.edu/pspt_access/ : Precision Solar Photometric Telescopehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/707/482https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/707/482http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/707/482https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/707/482https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/707/482http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/707/482GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapUVdefaultJ/ApJ/707/482/modelsAtmospheric models for features B, D, F, H, PrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFSimbad column added by the CDSmeta.id;stat.fitcharInd[0,100] Index for the height (1)meta.idinth[-1.1e+07,2.03933e+08] Altitude on the Sun above an arbitrary reference point (2)kmphys.sizedoubleT[3790,201234] Temperature (3)Kphys.temperaturedoublene[4.47707e+09,3.81523e+15] Electron densitycm**-3phys.density;phys.electrondoublenp[1.53999e+09,3.78703e+15] Proton densitycm**-3phys.densitydoublena[3769.84,1.40664e+17] Neutral hydrogen densitycm**-3phys.densitydoublenh[3.7253e+09,1.43198e+17] Total hydrogen density (4)cm**-3phys.densitydoublevt[52017,2.5e+06] Turbulence velocity (5)km/sphys.velocfloataccel[644.870,7000] Non-gravitational acceleration (6)cm.s**-2phys.accelerationfloatbH-[0.439154,917.888] Departure from LTE coefficient for H^-^ (7)stat.fit.paramdoublebH2[0.554186,917.888] Departure from LTE coefficient for H_2_ molecule (8)stat.fit.paramdouble