J/A+A/670/A162ivo://CDS.VizieR/J/A+A/670/A162doi:10.26093/cds/vizier.36700162CDSRen B.B.Wallack N.L.Hurt S.A.Mawet D.Carter A.L.Echeverri D.,Llop-Sayson J.Meshkat T.Oppenheimer R.Aguilar J.Cady E.Choquet E.,Ruane G.Vasisht G.Ygouf M.2024-11-06T20:02:37Z2023-02-23T07:36:12ZCDS support team

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

cds-question@unistra.frinfrared-photometryGaps in circumstellar disks can signal the existence of planetary perturbers, making such systems preferred targets for direct imaging observations of exoplanets. Being one of the brightest and closest stars to the Sun, the photometric standard star Vega hosts a two-belt debris disk structure. Together with the fact that its planetary system is being viewed nearly face-on, Vega has been one of the prime targets for planet imaging efforts. Using the vector vortex coronagraph on Keck/NIRC2 in Ms-band at 4.67-micron, we report the planet detection limits from 1 au to 22au for Vega with an on-target time of 1.8h. We reach a 3 Jupiter mass limit exterior to 12au, which is nearly an order of magnitude deeper than existing studies. Combining with existing radial velocity studies, we can confidently rule out the existence of companions more than ~8 Jupiter mass from 22au down to 0.1au for Vega. Interior and exterior to ~4au, this combined approach reaches planet detection limits down to ~2-3 Jupiter mass using radial velocity and direct imaging, respectively. By reaching multi-Jupiter mass detection limits, our results are expected to be complemented by the planet imaging of Vega in the upcoming observations using the James Webb Space Telescope to obtain a more holistic understanding of the planetary system configuration around Vega.2023A&A...670A.162Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/670/A162CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/AJ/135/2245 : Absolute spectrum of Sun & Vega for 0.2-30um (Rieke+, 2008)J/PASP/121/1065 : High-resolution spectrum of Vega: 3850-6860{AA} (Kim+, 2009)J/A+A/531/L2 : Images of Vega at 1.3mm (Pietu+, 2011)J/AJ/146/68 : Spectra of Vega, Sirius, GD153 and HD209458 (Linnell+, 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/670/A162https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/670/A162http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/670/A162https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/670/A162https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/670/A162http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/670/A162GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapInfrareddefaultJ/A+A/670/A162/contrast5-sigma contrast curve of VegarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSepRadial separation from the staraupos.angDistancedoubleContrastCompanion-to-star contrastphot.mag;arith.diffdoubleMassCompanion mass in units of Jupiter mass(1.898187x10+27kg)phys.massdouble