J/ApJS/244/11ivo://CDS.VizieR/J/ApJS/244/11doi:10.26093/cds/vizier.22440011CDSKruse E.Agol E.Luger R.Foreman-Mackey D.2021-10-13T12:15:38Z2021-10-13T13:12:49ZCDS support team

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

cds-question@unistra.frexoplanetseclipsing-binary-starsstellar-radiiWe implement a search for exoplanets in campaigns zero through eight (C0-8) of the K2 extension of the Kepler spacecraft. We apply a modified version of the Quasi-periodic Automated Transit Search (QATS) planet search algorithm to K2 light curves produced by the EVEREST pipeline, carrying out the C0-8 search on 1.5x10^5^ target stars with magnitudes in the range of Kp=9-15. We detect 818 transiting planet candidates, of which 374 were undiscovered by prior searches, with {64, 15, 5, 2, 1} in {2, 3, 4, 5, 6}-planet multiplanet candidate systems, respectively. Of the new planets detected, 100 orbit M dwarfs, including one that is potentially rocky and in the habitable zone. A total of 154 of our candidates reciprocally transit with our solar system: they are geometrically aligned to see at least one solar system planet transit. We find candidates that display transit timing variations and dozens of candidates on both period extremes with single transits or ultrashort periods. We point to evidence that our candidates display similar patterns in frequency and size-period relation to confirmed planets, such as tentative evidence for the radius gap. Confirmation of these planet candidates with follow-up studies will increase the number of K2 planets by up to 50%, and characterization of their host stars will improve statistical studies of planet properties. Our sample includes many planets orbiting bright stars amenable for radial velocity follow-up and future characterization with JWST. We also list the 579 eclipsing binary systems detected as part of this search.2019ApJS..244...11Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/244/11CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIV/34 : K2 Ecliptic Plane Input Catalog (EPIC) (Huber+, 2017)J/ApJS/197/8 : Kepler's candidate mult. transiting planets (Lissauer+, 2011)J/ApJ/767/95 : Improved stellar param. of smallest KIC stars (Dressing+, 2013)J/ApJS/208/16 : Kepler transit timing observations. VIII. (Mazeh+, 2013)J/ApJS/210/20 : Small Kepler planets radial velocities (Marcy+, 2014)J/ApJ/784/45 : Kepler's multiple planet candidates. III. (Rowe+, 2014)J/AJ/147/119 : Cat. of sources in the Kepler field of view (Coughlin+, 2014)J/ApJ/787/47 : 106 Kepler ultra-short-period planets (Sanchis-Ojeda+, 2014)J/ApJ/790/146 : Planets in Kepler's multi-transiting systems (Fabrycky+, 2014)J/ApJ/807/45 : Potentially habitable planets around M dwarfs (Dressing+, 2015)J/ApJ/809/25 : Stellar and planet properties for K2 candidates (Montet+, 2015)J/ApJS/222/14 : Planetary candidates from 1st yr K2 mission (Vanderburg+, 2016)J/AJ/151/68 : Kepler Mission. VII. Eclipsing binaries in DR3 (Kirk+, 2016)J/ApJS/224/2 : K2 EPIC stellar properties for 138600 targets (Huber+, 2016)J/ApJS/224/12 : Kepler planetary candidates. VII. 48-month (Coughlin+, 2016)J/ApJS/226/7 : Planet cand. discovered using K2's 1st yr (Crossfield+, 2016)J/A+A/594/A100 : K2 new planetary and EB candidates (Barros+, 2016)J/AJ/152/105 : Kepler-80 transit timing observations (MacDonald+, 2016)J/MNRAS/463/1780 : Exoplanet candidates in Praesepe (M 44) (Libralato+, 2016)J/MNRAS/463/1831 : M67 Kepler/K2 variable stars (Nardiello+, 2016)J/ApJ/836/167 : K2 planetary syst. around low-mass stars. I. (Dressing+, 2017)J/AJ/154/109 : California-Kepler Survey (CKS). III. Radii (Fulton+, 2017)J/AJ/154/207 : K2 planetary systems orbiting low-mass stars (Dressing+, 2017)J/AJ/155/21 : Planet candidates from K2 campaigns 5-8 (Petigura+, 2018)J/AJ/155/136 : Planets around bright stars in K2 campaigns 0-10 (Mayo+, 2018)J/ApJS/235/38 : Kepler planetary cand. VIII. DR25 reliability (Thompson+, 2018)J/AJ/156/89 : RVs + transit-times for the K2-24 systems (Petigura+, 2018)J/AJ/156/277 : 60 validated planets from K2 campaigns 5-8 (Livingston+, 2018)http://keplerscience.arc.nasa.gov/ : Kepler & K2 science center home pagehttp://exoplanetarchive.ipac.caltech.edu/ : NASA exoplanet archivehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/244/11https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/244/11http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/244/11https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/244/11https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/244/11http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/244/11GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/244/11/stars (EPIC stars listed in Tables 7 and 9; table added by CDS)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/244/11/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/244/11/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/244/11/stars?GETtext/xml+votable180.050000true173.90266-5.36459250.005555555555555556Cone search capability for table J/ApJS/244/11/table7 (Our planet candidates from C0-8)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/244/11/table7?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/244/11/table7?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/244/11/table7?GETtext/xml+votable180.050000true173.90266-5.36459250.0055555555555555565/71 94 101 112 1155-1156 1165 1169 1180 1218 4503 4528 4532-4533 4584-4586 4612 4617 4623 5977 6401 6406 6418 6427 6431 6747 6769 7245 7260-7261 10746 11097 11182 6/267 269-270 272-273 275-276 279 282 294 301 303 307 310-311 313-315 318 322 328-329 335 339-341 344 346 352-354 357-361 363 365-366 374 382 397 402 409-410 413 437 439 453-455 462 464 467 471 474-478 484-485 1058 1064 1066 4247 4253-4255 4262-4263 4268-4269 4271 4273 4275-4276 4278-4282 4286-4287 4295-4296 4298 4300-4301 4303 4313-4314 4320 4322 4328 4330 4332 4334 4336 4338 4345-4347 4351 4514 4521 4523-4524 4526 4629-4630 4632 4634-4635 4639 4645 4656 4658-4659 4665 4668-4670 4672-4673 4675 4681-4685 4687-4688 4694 4696 4698-4701 4704-4705 4707-4710 4713 4716-4717 4730-4733 4800 4816-4818 4867 4896-4897 17082 17998-17999 18003 18007-18009 18017-18019 18022-18023 18025-18026 18035 18038-18041 18044-18045 18047 18116-18118 18123-18124 18136 18138-18140 18142-18143 18148 18150-18151 18161 18163-18164 18169 18172-18173 18178 18180 18182 18184 18187-18188 18208 18213 18218 18222-18224 18226 18228 18230 18304 18306-18308 18310-18313 18318-18319 18322 18328-18329 18332 18335 18349-18352 18354 18361-18362 18437-18438 18442 18446 18453 18457-18459 18462 18464 18473-18474 18476-18478 18480-18481 18483-18484 18490 18496 18508 18510 18520 18533 18536 18538 18542 18560-18561 18563 18565-18567 18569-18573 18578-18580 18582 18586 18588-18590 18593 18597 18609-18610 18614 18617 18621 18625-18628 18630-18633 18636 18638 18643 18649 18660 18663 18665 18668 19537 19540-19541 23485-23486 23523 23529 23531-23534 23546-23547 23797 23847 23850 23853 23857 23859 23861 23863 23865 23867-23868 23907 23916-23917 23936-23937 23940-23941 23946 23951 23953-23955 23959 23961 23965-23966 23969 23974-23975 23977 23979-23980 23982 23985-23986 23994 23998 24002 24019 24027 24030 24036-24037 24039 24042-24044 24047 24051 24054 24056-24057 24324 24326-24327 24333 24335 24337-24341 24343 24348 24373 24384-24386 24394-24395 24400 24402 25535 25576-25578 25580-25581 25586 25592-25593 25595 25598 25603 25609-25610 25612-25614 25631 25633 25637-25638 25641 25643-25644 25646-25648 25650-25651 25653-25655 25657 25660 25663 25666 25677-25678 25683 25686 25688-25689 25691 25694 25696-25698 25702-25704 25707 25712 25716 25721 25729 25732 25735 25744 25747 25750 25752-25753 25755-25757 25759 25781 25783 25793-25795 25799-25800 25802 25805 25807 25810-25812 25814 25818 25820 25829 26900-26901 26903 26905-26906 26928 26932 26935 26940 26942 26944 26946 26952-26953 26955 26958-26959 26961 26969 26974-26978 26981-26983 26985-26986 26992 26994-26996 26999 27001 27004 27006 27025 27072-27073 27075 27080-27081 27084-27085 27087-27088 27091 27096-27098 27102 27109 27120-27122 27657-27658 27661 27680-27681 27684 27686 27690 27693 27695 27704 27706 27776-27778 27780-27781 27786-27788 27808 27810 28929 28933-28934 28940-28941 28943 28946 28951 28953-28954 28956 28965 28976 28978-28979 28988 28995 28999-29000 29002 29005 29009-29012 29014 29017-29019 29021-29022 29026 29028 29033-29035 29037-29038 29048 29121 29124 29224 29226 29312 29346 29348-29349 29351-29352 29354 29356 29360 29696 29728 29730 30722-30723 30725-30728 30734 30752 42862-42863 42874 42879 42909-42911 42929 42933 42939 42944-42945 42947-42948 42953-42954 42958 42961 42965 42967 42975 42978-42982 42994-42995 42998 43001-43002 44304 44307-44308 44317 44319 44353 44359 44361-44362 44366-44368 44370 44372 44374-44375 44377-44378 44380 44383-44385 44387 44393 44401 44403-44404 44406 44718-44719 44722 44732 44771 44779 48026 48028-48030 48037 48047-48048 48051 48055-48056 48061 48067-48068 48086 48089 48091 48093 48095 48097-48099 48105-48106 48109-48111 48113-48114 48120-48121 48501 48503 48596-48597 48599 48605https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/244/11?format=asciidefaultJ/ApJS/244/11/starsEPIC stars listed in Tables 7 and 9; table added by CDSrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEPIC[201147085/229228348] K2 Input Catalog IDmeta.id;meta.mainlongprimaryNpNumber of planet candidates for this star (link to Table 7)meta.numberintnullableEBDisplay this eclipsing binary star data (link to Table 9)meta.ref.urlintnullableSimbadSimbad column added by the CDSmeta.ref.urlchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/ApJS/244/11/table7Our planet candidates from C0-8e_Rp[0.1/350]? Lower uncertainty in Rp(6.3781x10+6m)stat.errorfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEPIC[201147085/229228348] K2 Input Catalog IDmeta.id.part;meta.mainlongm_EPIC[1/6] Planet candidate identifier within EPIC numbermeta.id.part;meta.mainintC[0/8] Campaign numbermeta.id;obsintPer[0.2/64]? Perioddtime.perioddoublenullableE_Per[6.3e-7/0.04]? Upper uncertainty in Perdstat.error;stat.maxdoublenullablee_Per[6.3e-7/0.05]? Lower uncertainty in Perdstat.errordoublenullablet0Barycentric Julian Date of mid-transit time; BJD-2455000dtime.epochdoubleE_t0[2.3e-5/0.03] Upper uncertainty in t0dstat.error;stat.maxdoublee_t0[2.3e-5/0.03] Lower uncertainty in t0dstat.errordoubleDur[0.4/23] Transit durationhtime.durationfloatE_Dur[0.005/1.4] Upper uncertainty in Durhstat.error;stat.maxfloate_Dur[0.004/1.5] Lower uncertainty in Durhstat.errorfloatDepth[56/39600] Transit depth(10-6)src.var.amplitudefloatE_Depth[3/10200] Upper uncertainty in Depth(10-6)stat.error;stat.maxfloate_Depth[3/6300] Lower uncertainty in Depth(10-6)stat.error;phys.absorption.opticalDepthfloatRp/R*[0.007/0.5] Ratio of planetary to stellar radiiphys.size.radius;arith.ratiodoubleE_Rp/R*[0.0002/0.2] Upper uncertainty in Rp/R*stat.error;stat.maxdoublee_Rp/R*[0.0006/0.2] Lower uncertainty in Rp/R*stat.errordoubleRp[0.4/1080]? Planet radius(6.3781x10+6m)phys.size.radiusdoublenullableE_Rp[0.04/320]? Upper uncertainty in Rp(6.3781x10+6m)stat.error;stat.maxfloatnullableR*[0.1/85]? Stellar radiussolRadphys.size.radiusfloatnullableE_R*[0.002/18]? Upper uncertainty in R*solRadstat.error;stat.maxfloatnullablee_R*[0.002/25]? Lower uncertainty in R*solRadstat.errorfloatnullablea/R*[1/130]? Semi-major axis to stellar radius ratiophys.size;arith.ratiofloatnullableE_a/R*[0.01/45]? Uncertainty in a/R*stat.error;stat.maxfloatnullablee_a/R*[0.01/84]? Uncertainty in a/R*stat.errorfloatnullableSinc[0.5/94000]? Incident flux; in Earth unitsEarthphot.flux;arith.ratiodoublenullableE_Sinc[0.3/27000]? Upper uncertainty in SincEarthstat.error;stat.maxdoublenullablee_Sinc[0.2/60000]? Lower uncertainty in SincEarthstat.errordoublenullableSimbadSimbad column added by the CDSmeta.ref.urlchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/ApJS/244/11/table9Our eclipsing binaries from C0-8Per[0.2/73]? Perioddtime.perioddoublenullableC[0/8] Campaign numbermeta.id;obsintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEPIC[201160323/220732672] K2 Input Catalog IDmeta.id.part;meta.mainlongm_EPIC[1/3] Binary identifier within EPIC numbermeta.id.part;meta.mainintE_Per[2.4e-7/0.02]? Upper uncertainty in Perdstat.error;stat.maxdoublenullablee_Per[2.4e-7/0.02]? Lower uncertainty in Perdstat.errordoublenullablet0Barycentric Julian Date of mid-transit time; BJD-2455000dtime.epochdoubleE_t0Upper uncertainty in t0dstat.error;stat.maxdoublee_t0Lower uncertainty in t0dstat.errordoubleDur[0.03/32.1] Eclipse durationhtime.durationfloatE_Dur[0.002/2.7] Upper uncertainty in Durhstat.error;stat.maxfloate_Dur[0.002/4.1] Lower uncertainty in Durhstat.errorfloatDepth[89/999958] Eclipse depth(10-6)src.var.amplitudedoubleE_Depth[6/580000] Upper uncertainty in Depth(10-6)stat.error;stat.maxdoublee_Depth[7/139000] Lower uncertainty in Depth(10-6)stat.error;phys.absorption.opticalDepthdouble