J/MNRAS/496/1197ivo://CDS.VizieR/J/MNRAS/496/1197doi:10.26093/cds/vizier.74961197CDSBattley M.P.Pollacco D.Armstrong D.J.2025-05-22T20:15:53Z2023-09-28T14:18:00ZCDS support team

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

cds-question@unistra.frstellar-associationsexoplanetsastrometryvisible-astronomyinfrared-astronomyYoung (<1Gyr) exoplanets represent a critically important area of exoplanet research, as they offer the opportunity to learn about the formation and early dynamic history of exoplanetary systems. However, finding young exoplanets is significantly complicated by the fast rotation and complex activity of their young host stars, which are often not well handled by state-of-the-art automatic pipelines. This work presents an alternative LOWESS-based pipeline focused specifically on detrending young stellar light curves from the 30-min cadence full-frame images produced by the Transiting Exoplanet Survey Satellite (TESS), and includes improvements such as automatic peak cutting of stellar variability and interpolation over masked transits to improve periodogram visibility and returned transit shapes. This work presents the details of the developed pipeline, along with initial results from its application to young stars within stellar associations in Sectors 1-5 of the TESS data. While no new exoplanet candidate signals were found in this work, interesting results included the recovery of all known 2-min TOIs around young stars in Sectors 1-5 from 30-min data alone, the recovery of the young exoplanet DS Tuc Ab, a number of young eclipsing binaries and a wide array of interesting rotation. A sensitivity analysis was also undertaken for each star, showing how the recovery of injected planets varied with both depth and period for each individual target. Challenges for future searches for young exoplanets are discussed, the largest being stellar rotation with periods less than 1d and a lack of a large sample of confirmed young stars.2020MNRAS.496.1197Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/496/1197CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIV/39 : TESS Input Catalog version 8.2 (TIC v8.2) (Paegert+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/496/1197https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/496/1197http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/496/1197https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/496/1197https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/496/1197http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/496/1197GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/496/1197/stars (List of studied stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/496/1197/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/496/1197/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/496/1197/stars?GETtext/xml+votable180.050000true76.87977510.176850.005555555555555556Cone search capability for table J/MNRAS/496/1197/table4 (Full sensitivity analysis table for each of the 256 stars with DIA light-curves)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/496/1197/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/496/1197/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/496/1197/table4?GETtext/xml+votable180.050000true76.87977510.176850.0055555555555555566/46 60 78 102 129 16424 16426 16455 16486 16511 16547 16832 16853 17199 17242 17288 17552 17606 20490 20513 20522 20612 20617 20634 20648 20650 20653 20657 20996 21007 21038 21050 21070 21090 21094 21180 21245 22609 22660 23383 23389 23511 24099 24104 24194 32805 32836 32844 32856 32881 32950 33019 33042 33047 33052-33053 33070 33073 33090 33099 33112 33155 33207 33312 33334 33368 33449 33504 33563 33583 33631 33694 33707 33809 33817 33834 33848 33850 33856 33907 33922 33925 33928 33937 33972 33980-33981 33993 33996 34008 34012 34050-34051 34058 34063 34068 34099 34105 34126-34127 34146 34164 34168 34175 34194 34196 34198 34203 34228 34235 34245 34269-34271 34276 34281 34293-34294 34297 34301 34320 34346 34365 34385 34397 34401 34406 34418 34423 34436 34450 34486-34487 34491 34493 34495 34536 34538 34573 34575 34583 34586 34588 34611 34649 34683 34739 34757 34769 34779 34789 34796 34825 34828 34830 34886 34930 35112 35340 35396 35471 35509 35531 35548 35627 35640 35696 35809 35818 35857 35861-35863 35866 36060 36113 36146 36169 36194 36242 36308 36322 36346 36487 36663 36713 36803 37002 37006 37047 37385 37400 37402 37414 37419 37421 37480 37498 37500 37520 37526 37567 37569 37611 37616 38912 38920 38936 38946-38947 38949 38970 39044 39051 39053 39056-39057 39068 39078 39083 39584 45336 45338 45351 45382 45434 45441 45485 45544 45927 46100 46217 46380 46536 46622 48263 48399https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/496/1197?format=asciiOpticalInfrareddefaultJ/MNRAS/496/1197/starsList of studied starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource namemeta.id;meta.maincharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainJ/MNRAS/496/1197/table4Full sensitivity analysis table for each of the 256 stars with DIA light-curvesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource namemeta.id;meta.maincharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainindexedDEJ2000Declination (J2000)degpos.eq.dec;meta.mainindexedSector[1/5] TESS sectorobs.fieldintPinjInjected perioddtime.periodintRp/R*Planet radius to star radius ratiophys.size;arith.ratiofloatSepOrbital separation (in R_*_ units) (1)pos.angDistancedoubleProtRotation perioddtime.perioddoubleEpochmaxEpoch of maximumdtime.epochdoubleindexedPmaxMaximum perioddtime.period;stat.maxdoubleP2maxSecond highest perioddtime.period;stat.maxdoubleP3maxThird highest perioddtime.period;stat.maxdoubleloglikeLogarithm of the maximum likelihoodstat.likelihooddoubleRecov[TRUE /FALSE] Indicates if the injected signal is recovered (2)meta.codecharNotesRemarksmeta.notecharAssocAssociationmeta.id.parentchar