J/A+A/629/A71ivo://CDS.VizieR/J/A+A/629/A71doi:10.26093/cds/vizier.36290071CDSMatlovic P.Toth J.Rudawska R.Kornos L.Pisarcikova A.2019-11-27T14:12:49Z2019-09-11T12:53:05ZCDS support team

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

cds-question@unistra.frasteroidscometsspectroscopyWe investigate the spectra, material properties and orbital distribution of mid-sized meteoroids. Our study aims to distinguish characteristics of different size populations of meteoroids and reveal the heterogeneity of identified meteoroid streams. The emission spectra and multi-station meteor trajectories were collected within the AMOS network observations. The sample is based on 202 meteors of -1 to -14 magnitude, corresponding to meteoroids of mm-dm in size. Overall increase of Na content compared to the population of mm-sized meteoroids was detected, reflecting weaker effects of space weathering processes on larger meteoroids. We report on very low ratio of pure iron meteoroids and the discovery of a new spectral group of Fe-rich meteors. The majority of meteoroids on asteroidal orbits were found to be chondritic. Thermal processes causing Na depletion and physical processes resulting in Na-rich spectra are described and linked to characteristically increased material strengths. Numerous major and minor shower meteors were identified in our sample, revealing various degrees of heterogeneity within Halley-type, ecliptical and sungrazing meteoroid streams.2019A&A...629A..71Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/629/A71CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/629/A71https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/629/A71http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/629/A71https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/629/A71https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/629/A71http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/629/A71GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/629/A71/table5Orbital and radiant parametersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCodeMeteor code in format yyyymmdd_hhmmssmeta.id;meta.maincharShowShower association in IAU MDC codemeta.id.assoccharRAgRadiant right ascensiondegpos.eq.rae_RAgRadiant right ascension errordegstat.error;pos.eq.rafloatDEgRadiant declinationdegpos.eq.dece_DEgRadiant declination errordegstat.error;pos.eq.decfloatvgGeocentric velocitykm/sphys.veloc;pos.geocentricfloate_vgGeocentric velocity errorkm/sstat.errorfloata? Semi-major axisauphys.angSize;srcfloatnullablee_a? Semi-major axis erroraustat.errorfloatnullablee? Eccentricitysrc.orbital.eccentricityfloatnullablee_e? Eccentricity errorstat.errorfloatnullableqPerihelion distanceaupos.distance;src.orbital.periastronfloate_qPerihelion distance erroraustat.errorfloatQ? Aphelion distanceaupos.distance;src.orbitalfloatnullableiInclinationdegsrc.orbital.inclinationfloate_iInclination errordegstat.errorfloatomegaArgument of periheliondegsrc.orbital.periastronfloate_omegaArgument of perihelion errordegstat.errorfloatOmegaLongitude of the ascending nodedegsrc.orbital.nodefloatTJ? Tisserand parameter with respect to Jupitersrc.orbitalfloatnullableJ/A+A/629/A71/table6Spectral, trajectory and material parametersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCodeMeteor code in format yyyymmdd_hhmmssmeta.id;meta.maincharSpTypeSpectral typesrc.spTypecharMAGAbsolute magnitudemagphys.magAbsfloate_MAGAbsolute magnitude errormagstat.error;phot.magfloatNa/MgNaI-1/MgI-2 intensity ratiospect.line.intensity;arith.ratiofloate_Na/MgNaI-1/MgI-2 intensity ratio errorstat.errorfloatFe/MgFeI-15/MgI-2 intensity ratiospect.line.intensity;arith.ratiofloate_Fe/MgFeI-15/MgI-2 intensity ratio errorstat.error;phys.abund.FefloatviInitial velocitykm/sphys.velocfloate_viInitial velocity errorkm/sstat.errorfloatHBBeginning heightkmphys.sizefloatHETerminal heightkmphys.sizefloatLTrajectory lengthkmsrc.morph.scLengthfloatKBK_B_ material strengthstat.fit.paramfloate_KBK_B_ material strength errorstat.errorfloatClassKBK_B_ material strength classmeta.code.classcharPEP_E_ material strengthstat.fit.paramfloate_PEP_E_ material strength errorstat.errorfloatClassPEP_E_ material strength classmeta.code.classchar