J/A+A/581/A26ivo://CDS.VizieR/J/A+A/581/A26doi:10.26093/cds/vizier.35810026CDSLemaire P.Vial J.-C.Curdt W.Schuhle U.Wilhelm K.2016-01-03T16:11:55Z2015-08-26T06:43:31ZCDS support team

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

cds-question@unistra.frthe-sunspectroscopyAccurate hydrogen spectra emitted by the entire solar disc in the Ly-{alpha} and Ly-{beta} lines are valuable for deriving the distribution and the behaviour of atomic hydrogen in the heliosphere, for understanding the UV emissions of solar type stars better, and finally for estimating the solar energy input that mainly initiates the chemical processes occurring in the planetary and cometary outer atmospheres. In this paper we want to accurately determine the irradiance solar spectral profiles of Ly-{alpha} and Ly-{beta} and their evolution through the solar activity cycle 23. The SUMER/SOHO spectrometer is a slit spectrometer that is only able to analyse a small part of the solar image. Consequently, we used the scattered light properties of the telescope to obtain average spectra over the solar disc. Then the profile is calibrated using the SOLSTICE/UARS and TIMED/SEE irradiance spectra.2015A&A...581A..26Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/581/A26CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/309/655 : Solar chromospheric activity (HeI 10830A) (Shcherbakov+ 1996)J/A+A/313/949 : Solar chromospheric structures. II. (Bocchialini+, 1996)J/A+A/375/591 : SUMER Spectral Atlas of Solar Disk Features (Curdt+, 2001)J/A+A/390/707 : Hemispheric Sunspot Numbers 1975-2000 (Temmer+, 2002)J/A+A/447/735 : Hemispheric Sunspot Numbers 1945-2004 (Temmer+, 2006)J/A+A/539/A13 : Solar bipolar magnetic fields (Yamamoto, 2012)J/A+A/552/A114 : Sun chromospheric CaII-HK emission (Shapiro+, 2013)J/A+A/574/A37 : Movies of 2012-10-16 solar flare (Dalmasse+, 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/581/A26https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/581/A26http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/581/A26https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/581/A26https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/581/A26http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/581/A26GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapSOHOdefaultJ/A+A/581/A26/listList of Ly-{alpha} and Ly-{beta} observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLineLine (Ly-{alpha} or Ly-{beta})meta.id;spect.lineObsObservation datestime.epoch;obsnullablespPlot of the spectrum profilemeta.ref.urlcharFileNameName of the file in subdirectory spmeta.id;meta.filechar