J/A+A/693/A4ivo://CDS.VizieR/J/A+A/693/A4doi:10.26093/cds/vizier.36930004CDSOsborne H.L.M.Nielsen L.D.Van Eylen V.Barragan O.2025-02-24T20:02:25Z2024-12-23T09:59:22ZCDS support team

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

cds-question@unistra.frmultiple-starsexoplanetsradial-velocityvisible-astronomyEmpirical exoplanet mass-radius relations have been used to study the demographics and compositions of small exoplanets for many years. However, the heterogeneous nature of these measurements hinders robust statistical analysis of this population, particularly with regard to the masses of planets. For this reason, we perform a homogeneous and consistent re-analysis of the radial velocity (RV) observations of 87 small exoplanets using publicly available HARPS RV data and the fitting toolkit Pyaneti. For the entire sample, we run 12 different models to investigate the impact of modelling choices, including the use of multi-dimensional Gaussian Processes (GPs) to mitigate stellar activity. We find that the way orbital eccentricity is modelled can significantly impact the RV amplitude found in some cases. We also find that the addition of a GP to mitigate stellar activity does impact the RV amplitude found - though if the GP is modelled on activity indicators as well as the RVs the results are more robust. The RV amplitude found for every planet in our sample using all the models is made available for other groups to perform demographics studies. Finally, we provide a list of recommendations for the RV community moving forward.2025A&A...693A...4Ohttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/693/A4CatalogResearchIsServedByTAP 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/A4https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/693/A4http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/693/A4https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/693/A4https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/693/A4http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/693/A4GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/693/A4/targets (List of targets)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/693/A4/targets?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/693/A4/targets?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/693/A4/targets?GETtext/xml+votable180.050000true230.4505833-48.31761110.0055555555555555566/4268 16847 17149 18147 18453 18785 20667 21206 22078 22886 24587 25463 26278 26977 27393 27787 29349 31216 32848 32918 33210 33386 33598 33898 33972 35057 35985 36015 37453 37548 38456 38464 38946 39080 39148 40250 40833 41941 43525 43580 43631 44272 44431 44471 44474 45172 45964 47125 47194 47717 48274https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/693/A4?format=asciiOpticaldefaultJ/A+A/693/A4/targetsList of targetsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintVCShow the Radial Velocity curvesmeta.ref.urlcharNameStar identifier from Simbadmeta.id;meta.maincharRAJ2000Simbad right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Simbad declination (J2000)pos.eq.dec;meta.mainTICStar identifier from TESS input cataloguemeta.idlongGaiaDR2Star identifier from Gaia DR2 cataloguemeta.idPlanetPlanet identifier from NASA Exoplanet Archivemeta.idcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/A+A/693/A4/dataFull HARPS datae_RVRadial velocity errorkm/sstat.errordoubleFWHMFull width at half maximumspect.line.widthdoubleBISBisector inverse slopephys.velocdoubleTICStar identifier from TESS input cataloguemeta.idlongGaiaDR2Star identifier from GAIA cataloguemeta.idPlanetPlanet identifier from NASA Exoplanet Archivemeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar identifier from Simbadmeta.id;meta.maincharBJDTime, barycentric Julian datedtime.epochdoubleRVRadial velocity from CCFkm/sphys.veloc;pos.heliocentricdouble