J/AN/347/70071ivo://CDS.VizieR/J/AN/347/70071CDSLehtmets A.Kama M.Fossati L.Aret A.2026-07-02T14:04:38Z2026-02-16T15:32:36ZCDS support team

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

cds-question@unistra.frstellar-associationsatomic-physicsaccretionThe interactions between stars and their orbiting planets, driven by forces such as stellar radiation and gravity, play an essential role in shaping exoplanetary atmospheres and gas-rich debris discs. One way to look into the composition of these environments is to observe how they can contaminate the stellar photospheres. For that, we examine how stellar radiation pressure and gravity influence atomic species and analyse their effects across various stellar effective temperatures. Using the radiative -to-gravitational force ratio, we determined the atomic movement direction and assessed the velocity boost imparted to neutral atoms escaping from exoplanet atmospheres or debris discs. Incorporating the solar far ultraviolet/extreme ultraviolet spectrum to address flux discrepancies in the ATLAS9 model, we find that radiation affects atoms differently according to their ionisation state, with highly ionised species less affected by stellar radiation. Our results conclude that the stars most suitable for observing stellar contamination are those between 6,500 and 8,000 K, with neutral noble gases and ionised iron-peak elements as the most likely contaminants.2026AN....34770071Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AN/347/70071CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AN/347/70071https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AN/347/70071http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AN/347/70071https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AN/347/70071https://vizier.iucaa.in/viz-bin/votable?-source=J/AN/347/70071http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AN/347/70071GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/AN/347/70071/tablea1Chosen parameters for calculation of beta ratios and velocity boostsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintAge[20] Stellar ageMyrtime.ageintMass[0.75/6.20] Stellar masssolMassphys.massfloatRadius[0.576/2.370] Stellar radiussolRadphys.angSize;srcfloatTeff[4000/19000] Stellar effective temperatureKphys.temperature.effectiveintlogg[4.5] Stellar surface gravity in logarithmic scalelog(cm.s**-2)instr.scalefloatJ/AN/347/70071/tablea2Beta ratios of all investigated atoms and ions across 9 different stellar effective temperaturesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonIon name (e.g. H_I, He_II)phys.atmol.ionStagecharB1Beta ratio value at 4000 Kphys.atmoldoubleea_B1Beta ratio absolute error at 4000 Kstat.errordoubleer_B1Beta ratio relative error (%) at 4000 K%stat.errordoubleB2Beta ratio value at 4500 Kphys.atmoldoubleea_B2Beta ratio absolute error at 4500 Kstat.errordoubleer_B2Beta ratio relative error (%) at 4500 K%stat.errordoubleB3Beta ratio value at 5000 Kphys.atmoldoubleea_B3Beta ratio absolute error at 5000 Kstat.errordoubleer_B3Beta ratio relative error at 5000 K%stat.errordoubleB4Beta ratio value at 6000 Kphys.atmoldoubleea_B4Beta ratio absolute error at 6000 Kstat.errordoubleer_B4Beta ratio relative error (%) at 6000 K%stat.errordoubleB5Beta ratio value at 8000 Kphys.atmoldoubleea_B5Beta ratio absolute error at 8000 Kstat.errordoubleer_B5Beta ratio relative error (%) at 8000 K%stat.errordoubleB6Beta ratio value at 10000 Kphys.atmoldoubleea_B6Beta ratio absolute error at 10000 Kstat.errordoubleer_B6Beta ratio relative error (%) at 10000 K%stat.errordoubleB7Beta ratio value at 13000 Kphys.atmoldoubleea_B7Beta ratio absolute error at 13000 Kstat.errordoubleer_B7Beta ratio relative error (%) at 13000 K%stat.errordoubleB8Beta ratio value at 17000 Kphys.atmoldoubleea_B8Beta ratio absolute error at 17000 Kstat.errordoubleer_B8Beta ratio relative error (%) at 17000 K%stat.errordoubleB9Beta ratio value at 19000 Kphys.atmoldoubleea_B9Beta ratio absolute error at 19000 Kstat.errordoubleer_B9Beta ratio relative error (%) at 19000 K%stat.errordoubleJ/AN/347/70071/tablea3Ionisation rates of neutral atomsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonIon name (e.g. H_I, He_I)phys.atmolcharI1Ionisation rate value at 4000 K1e+10s**-1phys.atmoldoubleI2Ionisation rate value at 4500 K1e+10s**-1phys.atmoldoubleI3Ionisation rate value at 5000 K1e+10s**-1phys.atmoldoubleI4Ionisation rate value at 6000 K1e+10s**-1phys.atmoldoubleI5Ionisation rate value at 8000 K1e+10s**-1phys.atmoldoubleI6Ionisation rate value at 10000 K1e+10s**-1phys.atmoldoubleI7Ionisation rate value at 13000 K1e+10s**-1phys.atmoldoubleI8Ionisation rate value at 17000 K1e+10s**-1phys.atmoldoubleI9Ionisation rate value at 19000 K1e+10s**-1phys.atmoldoubleJ/AN/347/70071/tablea4Velocity boosts of neutral atomsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonIon name (e.g. H_I, He_I)phys.atmol.ionStagecharVb1? Velocity boosts value at 4000 K (1)km/sphys.atmoldoublenullableVb2? Velocity boosts value at 4500 K (1)km/sphys.atmoldoublenullableVb3? Velocity boosts value at 5000 K (1)km/sphys.atmoldoublenullableVb4? Velocity boosts value at 6000 K (1)km/sphys.atmoldoublenullableVb5? Velocity boosts value at 8000 K (1)km/sphys.atmoldoublenullableVb6? Velocity boosts value at 10000 K (1)km/sphys.atmoldoublenullableVb7? Velocity boosts value at 13000 K (1)km/sphys.atmoldoublenullableVb8? Velocity boosts value at 17000 K (1)km/sphys.atmoldoublenullableVb9? Velocity boosts value at 19000 K (1)km/sphys.atmoldoublenullableJ/AN/347/70071/tablea5Beta ratio values from this work with photospheric emission and modified stellar EUV compared to Fernandez et al., 2006ApJ...643...509K results at 8000K stellar effective temperaturerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonIon name (e.g. H_I, He_II)phys.atmol.ionStagecharBPE? Beta ratio value from this work with photospheric emission (1)phys.atmoldoublenullablee_BPE? Beta ratio value from this work with photospheric emission error (1)stat.errordoublenullableBMS? Beta ratio value from this work with modified Stellar EUV (1)phys.atmoldoublenullablee_BMS? Beta ratio value from this work with modified Stellar EUV error (1)stat.errordoublenullableBF06? Beta ratio value from Fernandez et al., 2006ApJ...643...509K (1)phys.atmoldoublenullablee_BF06? Beta ratio value from Fernandez et al., 2006ApJ...643...509K error (1)stat.errordoublenullableJ/AN/347/70071/tablea6Velocity boost values from this work with photospheric emission and modified stellar EUV compared to Fernandez et al., 2006ApJ...643...509K results at 8000K stellar effective temperaturerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonIon name (e.g. H_I, He_I)phys.atmol.ionStagecharVbPEVelocity boost value from this work with photospheric emissionkm/sphys.atmoldoubleVbMSVelocity boost value from this work with modified stellar EUVkm/sphys.atmoldoubleVbF06Velocity boost value from Fernandez et al., 2006ApJ...643...509Kkm/sphys.atmolfloat