J/AJ/166/79ivo://CDS.VizieR/J/AJ/166/79doi:10.26093/cds/vizier.51660079CDSNilipour A.Davenport J.R.A.Croft S.Siemion A.P.V.2024-11-06T20:19:02Z2024-03-26T07:44:42ZCDS support team

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

cds-question@unistra.frvariable-starsastrometryinfrared-photometryvisible-astronomybroad-band-photometrySpatiotemporal techniques for signal coordination with actively transmitting extraterrestrial civilizations, without the need for prior communication, can constrain technosignature searches to a significantly smaller coordinate space. With the variable star catalog from Gaia Data Release 3, we explore two related signaling strategies: the SETI Ellipsoid, and that proposed by Seto, which are both based on the synchronization of transmissions with a conspicuous astrophysical event. This data set contains more than 10 million variable star candidates with light curves from the first three years of Gaia's operational phase, between 2014 and 2017. Using four different historical supernovae as source events, we find that less than 0.01% of stars in the sample have crossing times, the times at which we would expect to receive synchronized signals on Earth, within the date range of available Gaia observations. For these stars, we present a framework for technosignature analysis that searches for modulations in the variability parameters by splitting the stellar light curve at the crossing time.2023AJ....166...79Nhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/166/79CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/350 : Gaia EDR3 (Gaia Collaboration, 2020)I/352 : Distances to 1.47 billion stars in Gaia EDR3 (Bailer-Jones+, 2021)J/A+A/652/A76 : Gaia Photometric Science Alerts (Hodgkin+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/166/79https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/166/79http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/166/79https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/166/79https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/166/79http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/166/79GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/166/79/table2 (Candidate targets)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/166/79/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/166/79/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/166/79/table2?GETtext/xml+votable180.050000true126.43530226038199-61.898120647247880.0055555555555555565/763 6/1089 1092 1095 1106-1107 1109 1280-1281 1425 1828 2547 2753 2799 2968 2970 2995 3038-3039 3047 3056-3058 3070-3071 3362 3461 3612 3721 3724 3726-3727 3749-3751 3754-3755 4130 4364 4540 4660 5132 5378 5428 5457 5600 5772 5844 5870 5992 6188 6203 6262 6294 7273 7448 7604 7868 8049 8077 8162 8304 8351 8548 8648 8690 8976 9240 9254 9856 10097 10395 10927 10941 10983 10993 11022 11147 11162 11168 11324 11586 11907-11908 12072 12082 12084 12639 13056 13178 13346 13625 13718 13748 13755 13758 13870 14008 14139 14176 14266 14325 14327 14333 14485 14703 15370 15781 15783 15921 16135 16141 16174 16260 16296 16438 16442 16671 16712 16714 16736 16745 16838 17173 17271 17537 17549 17566 18184 19472 19517 19655 19662 20095 20354 20399 20409 20474 20518 20544 20608 20667 20676 20750 21081 21193 21226 21590 21653 21719 21830 22191 22210 22217 22330 22411 22539 22576 22586 22681 22738 22741 22766 22949 23067 23159 23169 23565 23734-23735 23737-23740 23758-23759 23770-23771 23774 23777 23780 23968-23969 23974 23992 23995 24071 24077-24080 24102 24108 24110 24197 24199 24205 24218 24240-24241 24243 24252 24255 24298 24340 24342 24349 24351 24383 24414 24416 24418 24424 24426 24469 24471 24476-24478 24491 24493 24498-24500 24504 24627 24880 25120 25192 25201 25279 25314 25458 25528 25930 26300 26678 26838 26916 26982 27057 27063 27125 27317 27479 27731 27799 27828 27838 27855 28305 28407 28570 28599 28643 28825 28958 29096 29182 29215 29237 29256-29257 29260 29262 29280 29282-29284 29286 29550 29674 29701 29899 30350 31277 31385 31455 31516 31628 31688 31857 32536 32740 32768 32770 32831 32902 32908 32935 33198 33219 33242 33280 33290 33353 33392 33395 33419 33424 33435 33454 33499 33585 33615 33618 33645 33650 33666 33681 33696 33714 33724 33733 33738 33742 33769 33804 33823 33843 33859 33879 33925 33948 33991 33998 34003 34007 34011 34024 34032 34069 34079 34088 34091 34099 34102 34113 34126 34139 34168 34177 34198 34208 34228 34242 34272 34276 34285 34294 34308 34330 34337 34355 34373 34457 34519 34539 34545 34560 34589 34630 34663 34692 34742 34751 34856 34897 34933 34939 34968 35002 35015 35025 35049 35106 35228 35257 35259 35301 35309 35318 35333 35369 35377 35405 35433 35440 35449 35504 35551 35594 35601 35605 35633 35641 35649 35669 35699 35742 35773 35789 35849 35908 35927 35935 35937 36030 36133 36141 36368 36402 36418 36451 36490 36536 36609 36895 36910 36938 36942 36990 37021 37079 37083 37139 37150-37151 37169 37185 37248 37286 37291 37296 37299 37304 37338 37349 37364 37500-37501 37503 37593 37624 37631 37672 37730 37735 37738 37750 37766 37769 37781 37793 37802 37807 37821 37829 37838 37845 37854 37859 37873 37875 37887 37894 37907 37936 37968 37992 38129 38138 38227 38303 38387 38421 38572 38584 38617 38637 38648 38690 38826 38945 38972 38997 39009-39011 39019 39028 39059 39094 39096 39105 39110 39125 39129 39137 39147-39148 39172-39173 39175-39176 39186-39187 39195 39206 39208 39211 39232 39337 39353 39396 39436 39443-39444 39446 39469 39484 39489 39491 39499 39561 39568 39575 39578 39601 39613 39635 39754 39840 39869 39929 39937 39948 40030 40080 40110 40137 40160 40216 40256 40287 40289 40464 40483 40604 40713 40795 40809 40962 40964 40975 40985 41031 41095 41110 41132 41158 41163 41181 41196 41224 41295 41376 41410 41421 41505 41633 41694 41768 41794 41796 41884 41906 42142 42485 42713 43175 43482 43660 44169 44303 44349 45075 45077 45080 45121 45158 45160 45254 45258 45284 45292 45323 45444 45497 45552 45662 45683 45705 45708 45712 45826 45841 45850 45890 45916 45921 46055 46107 46172 46215 46313 46342 46363 46443 46536 46608 47074 47911 48331 490221.9867573869263685e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/166/79?format=asciiOpticalInfrareddefaultJ/AJ/166/79/table2Candidate targetsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDGaia Source IDmeta.id;meta.mainRAICRS[0/360] Right Ascension, Gaia DR3 (ICRS at Epoch=2016.0)degpos.eq.ra;meta.mainDEICRS[-90/83] Declination, Gaia DR3 (ICRS at Epoch=2016.0)degpos.eq.dec;meta.mainDist[13.7/5073] Distance (1)pcpos.distancedoubleE_Dist[13/7528] Distance Upper Uncertainty Limit (84th percentile) (1)pcstat.error;stat.maxdoublee_Dist[13/4325] Distance Lower Uncertainty Limit (16th percentile) (1)pcstat.errordoubleX[-1850/5035] Galactocentric X Coordinatepcpos.cartesian.x;pos.galactocentricdoubleY[-456/2373] Galactocentric Y Coordinatepcpos.cartesian.y;pos.galactocentricdoubleZ[-408/682] Galactocentric Z Coordinatepcpos.cartesian.z;pos.galactocentricdoubleGmag[6.43/20.9] Gaia G Band Magnitudemagphot.mag;em.opt.VdoubleBPmag[6.63/21.2] Gaia BP Band Magnitudemagphot.mag;em.opt.BdoubleRPmag[5.82/20.3] Gaia RP Band Magnitudemagphot.mag;em.opt.RdoubleClassGaia Variability Classificationsrc.classcharXTime[2456852/2457901] Crossing Time (BJD)dtime.epochdoubleSetoSeto Method (2)meta.notecharSNSupernova Source Event, Table 1meta.id.assocchare_XTime[0.02/1.5]? Crossing Time Erroryrstat.errordoublenullable