J/A+A/693/A285ivo://CDS.VizieR/J/A+A/693/A285doi:10.26093/cds/vizier.36930285CDSSanz-Forcada J.Lopez-Puertas M.Lampon M.Czesla S.Nortmann L.,Caballero J.A.Zapatero Osorio M.R.Amado P.J.Murgas F.,Orell-Miquel J.Palle E.Quirrenbach A.Reiners A.Ribas I.,Sanchez-Lopez A.Solano E.2025-03-03T20:01:29Z2025-01-24T09:42:27ZCDS support team

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

cds-question@unistra.frmultiple-starsexoplanetslate-type-starsx-ray-sourcesultraviolet-sourcesThe detection of the HeI 10830{AA} triplet in exoplanet atmospheres has opened a new window for probing planetary properties, including atmospheric escape. Unlike Lyman alpha, the triplet is significantly less affected by the interstellar medium absorption. Sufficient X-ray and extreme ultraviolet (XUV) stellar irradiation may trigger the formation of the HeI triplet via photoionization and posterior recombination processes in the planet atmospheres. Only a weak trend between stellar XUV emission and the planetary HeI strength has been observed so far. We aim to confirm this mechanism for producing near-infrared HeI absorption in exoplanetary atmospheres by examining a substantial sample of planetary systems. We obtain homogeneous measurements of the planetary HeI line equivalent width and consistently compute the stellar XUV ionizing irradiation. Our first step is to derive new coronal models for the planet-host stars. We use updated data from the X-exoplanets database, archival X-ray spectra of M-type stars (including AU Mic and Proxima Centauri), and new XMM-Newton X-ray data recently obtained for the CARMENES project. These data are complemented at longer wavelengths with publicly available HST, FUSE, and EUVE spectra. A total of 75 stars are carefully analyzed to obtain a new calibration between X-ray and extreme ultraviolet (EUV) emission. Two distinct relationships between stellar X-ray emission (5-100{AA}) and EUV H (100-920{AA}) or EUV He (100-504{AA}) radiation are obtained to scale the emission from late-type (F to M) stellar coronae. A total of 48 systems with reported planetary HeI 10830{AA} studies, Including 21 positive detections and 27 upper limits, exhibit a robust relationship between the strength of the planetary He I feature and the ionizing XUV He received by the planet, corrected by stellar and planetary radii, and the planet gravitational potential. Some outliers could be explained by a different atmospheric composition, or the lack of planetary gaseous atmospheres. This relation may serve as a guide to predict the detectability of the HeI 10830{AA} absorption in exoplanet atmospheres.2025A&A...693A.285Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/693/A285CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/693/A285https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/693/A285http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/693/A285https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/693/A285https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/693/A285http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/693/A285GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/693/A285/stars (List of studied stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/693/A285/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/693/A285/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/693/A285/stars?GETtext/xml+votable180.050000true242.601291743.81763890.0055555555555555566/250 368 725 871 1036 1083 1292 2472 2532 4444 4651 4720 4990 5009 5420 5522 6217 6219 6760 8843 9459 9662 9843 10654 12398 12644 12899 12983 13702 14419 14548 14667 14709 14825 14847 15174 17851 18496 18726 18747 18785 18821 18943 19668 20125 20145 21531 22036 22078 22252 24019 24409 24580 25427 25885 25948 26183 26538 26844 26997 27060 27088 27975 28400 28548 30009 31216 31781 32217 32561 32757 33243 33456 33717 34054 35079 36697 36794 37955 38728 39257 39364 40250 40513 40833 41591 41607 42248 42290 42510 42714 43012 43818 44272 45364 46297 46632 48105 48274 49103https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/693/A285?format=asciiX-rayEUVdefaultJ/A+A/693/A285/starsList of studied starsColName of the column with flux density in sedsf25.dat filemeta.idcharDEJ2000Simbad declination (J2000)pos.eq.dec;meta.mainspShow the spectrummeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharRAJ2000Simbad right ascension (J2000)pos.eq.ra;meta.mainJ/A+A/693/A285/sedsf25Table with SED in X-rays, EUV and UV of 100 stars (wavelength vs density flux)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambda[1.005/2797.5] Wavelength Wavelength0.1nmem.wldoubleF114 Her density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF2? 16 Cyg B density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF330 Ari B density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF4? 47 UMa density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF555 Cnc density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF6AU Mic density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF7? CoRot-7 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF8GAT 1370 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF9GJ 1214 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF10GJ 3470 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF11GJ 411 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF12GJ 486 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF13GJ 806 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF14GJ 9827 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF15GQ Lup density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF16Gj 12 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF17Gj 357 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF18Gj 436 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF19Gj 832 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF20Gl 317 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF21Gl 674 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF22Gl 86 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF23Gl 876 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF24? HAT-p-1 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF25HAT-p-11 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF26? HAT-p-12 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF27HAT-p-32 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF28? HD 101930 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF29HD 102195 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF30HD 108147 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF31? HD 111232 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF32? HD 114386 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF33? HD 114762 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF34? HD 114783 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF35HD 130322 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF36HD 149026 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF37HD 154345 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF38? HD 164922 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF39HD 179949 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF40? HD 187123 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF41HD 189733 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF42? HD 190360 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF43? HD 195019 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF44? HD 201585 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF45HD 20367 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF46? HD 209458 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF47HD 216435 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF48? HD 216437 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF49? HD 217107 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF50HD 218566 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF51HD 235088 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF52? HD 27442 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF53HD 283636 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF54HD 330075 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF55? HD 4308 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF56HD 46375 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF57HD 49674 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF58? HD 50554 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF59? HD 52265 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF60HD 63433 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF61HD 70642 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF62HD 73583 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF63? HD 75289 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF64HD 93083 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF65? HD 95089 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF66HD 97658 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF67HD 99492 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF68HR 810 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF69K2-100 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF70K2-136 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF71KELT-7 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF72? KELT-8 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF73? KELT-9 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF74NGC 2423 3 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF75Proxima Cen density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF76? TOI 2134 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF77TOI 836 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF78Trappist-1 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF79Ups And density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF80V1298 Tau density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF81WASP-107 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF82? WASP-12 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF83? WASP-127 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF84? WASP-13 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF85? WASP-39 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF86WASP-69 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF87? WASP-76 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF88WASP-80 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF89beta Gem density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF90? beta Pic density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF91epsilon Eri density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF92? mu Ara density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF93tau Boo density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF94? 51 Peg density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF95? TWA 27A density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoublenullableF96HR 8799 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF97AD Leo density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF98GJ 699 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF99WASP 52 density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdoubleF100WASP 77A density flux at 1 a.u.10mW.m**-2.nm**-1phot.fluxdouble