J/A+A/704/A227ivo://CDS.VizieR/J/A+A/704/A227CDSO'Ryan D.Gomez P.2026-03-02T06:25:50Z2025-12-16T11:24:53ZCDS support team

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

cds-question@unistra.frgalaxiessurveysvisible-astronomyAstronomical archives contain vast quantities of unexplored data that potentially harbour rare and scientifically valuable cosmic phenomena. We leverage new semi-supervised methods to extract such objects from the Hubble Legacy Archive. We have systematically searched approximately 100 million image cutouts from the entire Hubble Legacy Archive using the recently developed AnomalyMatch method, which combines semi-supervised and active learning techniques for the efficient detection of astrophysical anomalies. This comprehensive search rapidly uncovered a multitude of astrophysical anomalies presented here that significantly expand the inventory of known rare objects. Among our discoveries are 86 new candidate gravitational lenses, 18 jellyfish galaxies, and 417 mergers or interacting galaxies. The efficiency and accuracy of our iterative detection strategy allows us to trawl the complete archive within just 2-3 days, highlighting its potential for large-scale astronomical surveys. We present a detailed overview of these newly identified objects, discuss their astrophysical significance, and demonstrate the considerable potential of AnomalyMatch to efficiently explore extensive astronomical datasets, including, for example, the upcoming Euclid data releases.2025A&A...704A.227Ohttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/704/A227CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/342 : Hubble Source Catalog (V1 and V2) (Whitmore+, 2016)J/ApJ/948/40 : Interacting galaxies from HST archives (O'Ryan+, 2023)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/704/A227https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/704/A227http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/704/A227https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/704/A227https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/704/A227http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/704/A227GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/704/A227/table2 (Catalogue of anomalies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/704/A227/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/704/A227/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/704/A227/table2?GETtext/xml+votable180.050000true189.309313926.22541730.0055555555555555565/6814 6/97 207 393 821 911 1082 2221 2230 2245 2331 2409 2444 2488 2565 2591 2607 2611 2617 2621 2623 2629 2658 2664 2667-2668 2676 2695 2704 2711 2736 2781 2813 4107 4215 4279 4352 4406 4706 4708 4831 4946 4966 5171 5283 5287 5293 5345 5542 5569 5624 5639 5719 5733 5791 5798 5802 5817 5860 5945 5973 5985 6011 6021 6023 6069 6112 6383 6399 6441 6452 6488 6495 6539 6622 6628 6827 7051 7225 7242 7280-7281 7294 7297 7416 7424 7426 7603-7604 7606 7622 7626 7741 7768 7786 7904 7970 8033 8264 8270 8282 8505 8518 8520 8542 8572 8587 8609 8625 8745 8748 8912 8921 9039 9147 9149-9151 9327 9374 9397 9468 9476 9498 9588 9640 9770 9831 9837 9842 9997 10093 10141 10144 10153 10189-10191 10201 10209 10212-10213 10217 10303 10337 10355 10362 10378-10379 10453 10459 10512-10513 10515-10517 10538 10664 10689 10761 10769 10841 10883 10888 10930 11080 11084 11230 11249 11252 11375 11424-11425 11428 11434 11443 11463 11467 11596 11636 11638 11655 11665 11667 11672 11674 11802 11806-11807 11845 11933 12184 12298 12644 13370 13387 13661 14754 15014 15244 15246 15333 15345 16297 16419 16459 16486 16609 16655 16702 17247 17294 17414 17457 17472 17679 17690 17703 17717 17741 17764 17769 17813 18024 18122 18581 18762 18778 18784 19009 19033 19036 19089 19097 19135 19239 19283 19314 19403 19542 19682 19697 19802 19846 19848 19858 19990 20099 20128 20315 20349 20416 20428 20440 20510 20536 20664 20735 21747 21877 22008 22581 22661 22696 22699 22721 22915 22949 22972 23078 23173 23179 23419 24652 24735 24759 24765 25071 25188 25327 25332 25334 25411 25415-25416 25451 25480 25484 25540 25675 25927 26037 26088-26089 26177 26189 26192 26195 26209 26249 26285 26331 26359 26487 26671 26676 26689 26692 26694 26915 26926 26981 27000 27002 27004 27009 27049 27124 27196 27198 27207 27247 27297 27300 27318 27355 27387 27551 27728 27738 27765 27767 27773 27775 27863 27926 27931 27949 28086 28130 28136 28141 28167 28344 28414 28448 28497 28535 28538 28588 28631 28641 29937 31386 31705 31730 31743 32379 32766 32948 33257 33321 33387 33502 33534 33586 33692 33720 33810 33827 33950 33995 33998 34014 34026 34035 34108 34110-34111 34165 34242 34304 34343 34352 34361 34366 34492-34493 34534 34668 34726 34793-34794 34858 35043 35147 35180 35206 35769 35792 35935 35957 35993 36052 36082 36089 36160 36331 36617 36644 36846 36918 37128 37343 37388 37395 38787 38973 39043 39563 39586 40384 40828 41014 43260 43262-43263 43307 43450-43451 43523 43604 43627 43763 43838 43848-43849 43882 43974 43977 43990 44795 45050 45081 45305 45423 45543 45873 45938 46089 46108 46126 46144 46212 46368 46418 46474 46517 46571 46621 46750 46896 46987 46999 47027 47102 47424 47430 47919 48416 48595 48748 48943 49012https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/704/A227?format=asciiOpticaldefaultJ/A+A/704/A227/table2Catalogue of anomaliesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSourceIDSourceID from Hubble source cataloguemeta.id;meta.mainClassClassification of anomalysrc.classcharRAJ2000Right ascension (J2000) of anomalydegpos.eq.ra;meta.mainDEJ2000Declination (J2000) of anomalydegpos.eq.dec;meta.mainReferenced[False True] If anomaly is already present in literaturemeta.codechar