J/AJ/167/10ivo://CDS.VizieR/J/AJ/167/10doi:10.26093/cds/vizier.51670010CDSChoza C.Bautista D.Croft S.Siemion A.P.V.Brzycki B.Bhattaram K.,Czech D.de Pater I.Gajjar V.Isaacson H.Lacker K.Lacki B.,Lebofsky M.MacMahon D.H.E.Price D.Schoultz S.Sheikh S.,Varghese S.S.Morgan L.Drew J.Worden S.P.2024-11-06T20:19:18Z2024-05-13T08:12:22ZCDS support team

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

cds-question@unistra.frgalaxiesradio-spectroscopyThe Breakthrough Listen search for intelligent life is, to date, the most extensive technosignature search of nearby celestial objects. We present a radio technosignature search of the centers of 97 nearby galaxies, observed by Breakthrough Listen at the Robert C. Byrd Green Bank Telescope. We performed a narrowband Doppler drift search using the turboSETI pipeline with a minimum signal-to-noise parameter threshold of 10, across a drift rate range of {+/-}4Hz/s, with a spectral resolution of 3Hz and a time resolution of 18.25s. We removed radio frequency interference (RFI) by using an on-source/off-source cadence pattern of six observations and discarding signals with Doppler drift rates of 0. We assess factors affecting the sensitivity of the Breakthrough Listen data reduction and search pipeline using signal injection and recovery techniques and apply new methods for the investigation of the RFI environment. We present results in four frequency bands covering 1-11GHz, and place constraints on the presence of transmitters with equivalent isotropic radiated power on the order of 1026W, corresponding to the theoretical power consumption of Kardashev Type II civilizations.2024AJ....167...10Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/167/10CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/767/94 : 1.1-1.9GHz SETI survey of KOIs. I. (Siemion+, 2013)J/ApJ/795/158 : The MASSIVE survey ; 116 candidate galaxies (Ma+, 2014)J/MNRAS/498/5720 : ExtendedBreakthrough Listen sample (Wlodarczyk-Sroka+, 2020)J/AJ/161/55 : Observation of 31 G-stars at 1.5GHz with GBT (Margot+, 2021)J/AJ/165/61 : 12 transiting Kepler exoplanet properties (Sheikh+, 2023)J/AJ/165/114 : SpecMatch-Emp isochrone analysis 45 stars (Zuckerman+, 2023)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/167/10https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/167/10http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/167/10https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/167/10https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/167/10http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/167/10GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/167/10/table5 (Properties of the galaxy analyzed in this work)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/167/10/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/167/10/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/167/10/table5?GETtext/xml+votable180.050000true10.684708341.268750.0055555555555555566/2121 2155 2216 2234 2272 2297 2567 2572 2611 2676 2709 2774 2830 3042 3299 3304 3506 4410 4439 4447 5067 5142 5287 7265 7606 7743 7941 8193 8195-8196 8526 10183 10444 10856 10888 10900 10977 11027 11434 11639 11691 11791 13672 15592 17165 17472 17605-17606 17612 18041 18269 18398 19239 19833 20101 21362 22039 26065 26315 26858 27207 27351 27515 27718-27719 27724 27743 27765 27773 27857 27907 27913-27914 27938 28015 28037 28040 28361 28496 28521 29699 29718 36247 36623 36785 43434 489427.952274030004205e-20 1.0188844282367877e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/167/10?format=asciiMillimeterRadiodefaultJ/AJ/167/10/table5Properties of the galaxy analyzed in this workX-band[5470/430000000000] Number of stars captured in X-bandmeta.numberdouble_RAPosition from Simbad (right ascension part)degpos.eq.ra;meta.main_DEPosition from Simbad (declination part)degpos.eq.dec;meta.mainSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGalaxyGalaxy identifiermeta.id;meta.maincharprimaryDist[0.06/29.2] DistanceMpcpos.distancefloatKmag[0.9/14] Apparent K band magnitudemagphot.mag;em.IR.KfloatTypeGalaxy morphology typesrc.morph.typecharL-band[29600/527000000000] Number of stars captured in L-bandmeta.numberdoubleS-band[12800/527000000000] Number of stars captured in S-bandmeta.numberdoubleC-band[5360/527000000000] Number of stars captured in C-bandmeta.numberdouble