J/A+A/566/A105ivo://CDS.VizieR/J/A+A/566/A105doi:10.26093/cds/vizier.35660105CDSWei H.G.Shi J.R.Wang F.L.Zhong J.Y.Liang G.Y.Zhao G.2014-12-17T16:34:17Z2014-06-20T11:26:06ZCDS support team

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

cds-question@unistra.fratomic-physicsAccurate atomic data are needed to analyze the SiIX K-shell features in astrophysical X-ray spectra. Relative large discrepancies in the existing atomic data have impeded this progress. We present the accurate SiIX K-shell transition data, including K-shell energy levels, wavelengths, radiative rates, and oscillator strengths. The flexible atomic code (FAC), which is a fully relativistic atomic code with configuration interaction (CI) included, was employed to calculate these data. To investigate the CI effects, calculations with different configurations included were carried out. The K-shell atomic data of SiIX transitions between 1s^2^2s^2^2p^2^, 1s^2^2s2p^3^, 1s^2^2p^4^, 1s2s^2^2p^3^, 1s2s2p^4^, and 1s2p^5^ are reported. The accuracy of our data is demonstrated by comparing them with the available experimental measurements and theoretical calculations. The energy levels are accurate to 3.5eV, the wavelengths to within 15m{AA}. For most transitions, the radiative rates an accuracy of 20%. The effects of CI from high-energy configurations were investigated as well.2014A&A...566A.105Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/566/A105CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+AS/102/435 : Transitions of SI in visible and infra-red (Biemont+ 1993)J/A+AS/105/245 : Stark broadening Al XI and Si XII (Dimitrijevic+ 1994)J/A+A/423/397 : Stark broadening of Si V (Ben Nessib+, 2004)J/A+A/508/1527 : SiII Radiative transition rates (Bautista+, 2009)J/ApJS/121/591 : Oscillator Strengths for SiVI (Coutinho+, 1999)J/A+AS/129/155 : Si XI + Si XIII lines Stark broadening (Dimitrijevic+ 1998)J/MNRAS/387/871 : SiVI atomic data and broadening effect (Hamdi+, 2008)J/A+A/541/A61 : Oscillator and collision strengths for SiVIII (Tayal+, 2012)J/A+A/522/A103 : Si XI K-shell energy levels and radiative rates (Wei+, 2010)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/566/A105https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/566/A105http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/566/A105https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/566/A105https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/566/A105http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/566/A105GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/566/A105/table3K-shell level energies in SiIXIndex[1/50] Indexmeta.id;meta.mainintprimaryConfConfigurationsphys.atmol.configurationcharJ[0/3] Total angular momentum (Parity)phys.angMomentumintP[oe] Parity (odd or even)phys.atmol.paritycharE[0/1879] Level energy from present FAC6 model calculations with the FAC codeeVphys.energy;phys.atmol.leveldoubleJ/A+A/566/A105/table4Wavelengths, radiative rates and oscillator strengths for transitions in SiIXrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintu[21/50] Upper levelmeta.idintl[1/20] Lower levelmeta.idintlambda[6.6/7.4] Transition wavelength {lambda} ({AA})0.1nmem.wl;phys.atmol.transitionfloatARadiative rates**-1phys.atmol.transProbdoublef(lu)Oscillator strengths between levelsphys.atmol.oscStrengthdouble