J/ApJ/907/89ivo://CDS.VizieR/J/ApJ/907/89doi:10.26093/cds/vizier.19070089CDSHerbst K.Papaioannou A.Airapetian V.S.Atri D.2022-10-27T11:34:18Z2022-06-17T06:25:01ZCDS support team

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

cds-question@unistra.frk-starsvisible-astronomymagnetic-fieldseffective-temperatureUpcoming missions, including the James Webb Space Telescope, will soon characterize the atmospheres of terrestrial-type exoplanets in habitable zones around cool K- and M-type stars by searching for atmospheric biosignatures. Recent observations suggest that the ionizing radiation and particle environment from active cool planet hosts may be detrimental to exoplanetary habitability. Since no direct information on the radiation field is available, empirical relations between signatures of stellar activity, including the sizes and magnetic fields of starspots, are often used. Here, we revisit the empirical relation between the starspot size and the effective stellar temperature and evaluate its impact on estimates of stellar flare energies, coronal mass ejections, and fluxes of the associated stellar energetic particle events.2021ApJ...907...89Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/907/89CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/337 : Gaia DR1 (Gaia Collaboration, 2016)IV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)J/other/Nat/485.478 : Superflares on solar-type stars (Maehara+, 2012)J/ApJS/209/5 : Superflares of Kepler stars. I. (Shibayama+, 2013)J/ApJ/797/50 : Global energetics of solar flares. I. (Aschwanden+, 2014)J/ApJS/211/24 : Rotation periods of Kepler MS stars (McQuillan+, 2014)J/A+A/593/A123 : STELLA-SES Radial Velocities of HD 208472 (Ozdarcan+, 2016)J/ApJ/866/99 : Radii of KIC stars & planets using Gaia DR2 (Berger+, 2018)J/ApJ/881/9 : EvryFlare. I. Cool stars's flares southern sky (Howard+, 2019)J/ApJ/871/187 : Spot parameters on KIC solar-type stars (Namekata+, 2019)J/A+A/625/A27 : II Pegasi spectra with PEPSI (Strassmeier+, 2019)J/ApJ/895/140 : EvryFlare. II. Parameters 122 cool flare stars (Howard+, 2020)J/ApJ/902/115 : EvryFlare. III. Superflares Evryscope & TESS (Howard+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/907/89https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/907/89http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/907/89https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/907/89https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/907/89http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/907/89GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/907/89/table2 (*Derived starspot temperatures, starspot areas normalized to the area of stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/907/89/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/907/89/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/907/89/table2?GETtext/xml+votable180.050000true296.639713341.37970.0055555555555555564/922 5/3694 3704 3730 3732-3733 3776 3778 3781-3784 3792 6/14573 14579 14581 14583-14586 14589 14591 14730-14731 14733-14735 14744 14746 14750-14751 14768 14770-14772 14775 14780-14781 14783 14792 14794-14795 14824-14826 14830 14918 14924-14925 14927 14936 14938-14940 14942-14943 14945-14950 14952-14953 14955 14958-14960 14962-14964 14967-14969 14972-14974 15042-15043 15060 15109-15111 15116-15118 15120-15122 15140-15141 15143-15144 15146 15148-15150 15154 15156-15158 15160 15172-15174 15178 15200https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/907/89?format=asciiOpticaldefaultJ/ApJ/907/89/table2*Derived starspot temperatures, starspot areas normalized to the area of starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintKICKepler Input Catalog identifiermeta.id;meta.mainintTeff[3300/6400] Effective stellar temperature (1)Kphys.temperature.effectiveintDeltaF/F[0.0005/0.11] Stellar brightness variation (2)phot.mag.sb;arith.ratiodoubleTspot1[2896/4148] Starspot temperature (3)Kphys.temperatureintTspot2[2733/4815] Starspot temperature (this work) (4)Kphys.temperatureinte_Tspot2[542/753] Uncertainty in Tspot2Kstat.errorintRatio1[0.0006/0.15] Starspot areas normailzed to area of star (3)phys.size;arith.ratiofloatRatio2[0.0007/0.17] Starspot areas normailzed to area of star from this work (4)phys.size;arith.ratiofloatE_Ratio2[0.0005/0.5] Upper uncertainty in Ratio2stat.error;stat.maxfloate_Ratio2[0.0001/0.1] Lower uncertainty in Ratio2stat.errorfloatSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPosition from SIMBAD (right ascension part)degpos.eq.ra;meta.main_DEPosition from SIMBAD (declination part)degpos.eq.dec;meta.main