J/A+A/462/795ivo://CDS.VizieR/J/A+A/462/795doi:10.26093/cds/vizier.34620795CDSZwitter T.Mignard F.Crifo F.2017-06-12T08:24:40Z2007-03-14T17:33:31ZCDS support team

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

cds-question@unistra.frasteroidsspectroscopyEchelle spectra of 10 bright asteroids are presented and compared against an observed twilight spectrum and a computed Solar spectrum. Spectra covering a 2130{AA} spectral range centered on 5785{AA} are of high resolving power and high signal to noise ratio. We compare detailed properties of spectral lines and not albedo variations. It is shown that the normalized Solar and asteroid spectra are identical except for radial velocity (RV) shifts which can be predicted at accuracy level of 1m/s. So asteroids are proposed as new and extremely accurate radial velocity standards. Predicted and measured RVs of observed asteroids match within the limits of accuracy of the instrument. There are numerous absorption lines in the reflected Solar spectrum. This allows a direct mapping of the resolving power of a spectrograph between and along echelle spectral orders. Thus asteroid spectra can be used to test the wavelength calibration and resolving power of spectrographs on the ground as well as in space, including the Gaia mission of ESA.2007A&A...462..795Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/462/795CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/astorb : Orbits of Minor Planets and Comets (Bowell+ 2006)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/462/795https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/462/795http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/462/795https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/462/795https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/462/795http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/462/795GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/462/795/table5SpectramedasterMedian asteroid fluxphot.fluxfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambdaWavelength0.1nmem.wldoubletwilTwilight fluxphot.fluxfloatkuruczKurucz Solar model fluxphot.flux;meta.modelledfloatCeres01Flux of 1 Ceresphot.fluxfloatPallas02Flux of 2 Pallasphot.fluxfloatJuno03Flux of 3 Junophot.fluxfloatVesta04Flux of 4 Vestaphot.fluxfloatMetis09Flux of 9 Metisphot.fluxfloatLutetia21Flux of 21 Lutetiaphot.fluxfloatEuterpe27Flux of 27 Euterpephot.fluxfloatHarmonia40Flux of 40 Harmoniaphot.fluxfloatPales49Flux of 59 Palesphot.fluxfloatSappho80Flux of 80 Sapphophot.fluxfloat