Dust-lane spheroidal galaxies from DESI-LS J/ApJS/280/69 ivo://CDS.VizieR/J/ApJS/280/69 CDS Luo Z. Chen J. Pei W. Xiao H. Zhang S. Cui Q. Shu C. 2026-08-07T08:58:24Z 2026-08-07T09:50:10Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr galaxies catalogs galaxy-classification-systems photometry visible-astronomy redshifted surveys Dust-lane spheroidal galaxies (DLSGs) are unique astrophysical systems that exhibit the morphology of early-type galaxies (ETGs) but are distinguished by prominent dust lanes. Recent studies propose that they form through minor mergers between ETGs and gas-rich dwarf galaxies, offering a window into the interstellar medium (ISM) of ETGs and star formation triggered by small-scale interactions. However, their rarity poses a challenge for assembling large, statistically robust samples via manual selection. To overcome this limitation, we employ GC-SWGAN, a semisupervised learning method developed by Luo+ 2025ApJS..279...17L, to systematically identify DLSGs within the DESI Legacy Imaging Surveys (DESI-LS). The methodology involves training a generative adversarial network on unlabeled galaxy images to extract morphological features, followed by fine-tuning the model using a small data set of labeled DLSGs. In our experiments, despite DLSGs constituting only ~3.7% of the test set, GC-SWGAN achieves remarkable performance, with an 87% recall rate, 84% accuracy, and an F1 score of 86%, underscoring its efficacy for DLSG detection. By applying this model to ~310,000 DESI-LS galaxies that meet the criteria m_r_<17.0 and 0.01<z<0.07 we compile the largest catalog of DLSG candidates to date, identifying 9482 dust-lane ETGs. A preliminary analysis reveals that these DLSGs exhibit significantly redder g-r colors and higher specific star formation rates compared to non-DLSGs. This catalog enables future studies of ISM properties in ETGs and the role of minor mergers in driving star formation in the nearby Universe. 2025ApJS..280...69L https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/280/69 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to V/154 : Sloan Digital Sky Surveys (SDSS), Release 16 (DR16) (Ahumada+, 2020) VII/292 : DESI Legacy Imaging Surveys DR8 photometric redshifts (Duncan, 2022) V/161 : DESI DR1 redshift catalog (DESI Col.+ 2025) J/A+A/519/A40 : Spectroscopic study of 65 nearby galaxies (Annibali+, 2010) J/MNRAS/414/940 : ATLAS3D project. IV. (Young+, 2011) J/MNRAS/435/2835 : Morphological types from Galaxy Zoo 2 (Willett+, 2013) J/ApJS/219/1 : Catalog of Type-1 AGNs from SDSS-DR7 (Oh+, 2015) J/AJ/154/86 : MaNGA catalog, DR15 (Wake+, 2017) J/ApJ/864/123 : Morphological param. of galaxies with GALEX (Mager+, 2018) J/MNRAS/491/2280 : Neural networks for spectral classification (Sharma+, 2020) J/MNRAS/526/4768 : Galaxy Zoo DESI (Walmsley+, 2023) http://d.legacysurvey.org/ : DESI Legacy Surveys home page http://www.sdss4.org/dr17/manga/manga-target-selection/nsa/ : NASA-Sloan Atlas https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/280/69 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/280/69 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/280/69 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/280/69 https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/280/69 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/280/69 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/ApJS/280/69/table2 (Catalog of 9,482 model-identified dust-lane spheroidal galaxy (DLSG) candidates from the DESI Legacy Imaging Surveys (DESI-LS)) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/280/69/table2? https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/280/69/table2? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/280/69/table2? 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20099-20100 20103 20107-20108 20113-20114 20116 20118 20120 20123 20134 20137 20139-20140 20144-20146 20149-20153 20160 20162-20164 20166-20167 20172-20174 20176-20178 20181 20183 20188-20189 20191 20200-20201 20205-20206 20208-20209 20211 20214 20218-20219 20224 20229 20231-20232 20234 20236-20237 20240-20241 20246 20254 20257 20260-20261 20263 20266-20267 20269 20271 20277 20279 20284 20287 20290-20291 20293 20298 20308 20312 20315 20317 20324-20325 20327 20331-20333 20337-20338 20343 20361-20362 20365-20367 20372 20374-20378 20386-20387 20392-20394 20398-20401 20404-20405 20408 20410 20417 20419 20426-20428 20430 20449 20452 20484-20485 20488 20491-20492 20496-20497 20499 20504-20506 20510-20512 20515 20522 20528 20530 20532 20534-20535 20539 20541 20578 20584 20586 20609 20611-20614 20616-20617 20629-20630 20632-20634 20637 20639 20644 20647-20648 20652-20654 20662-20663 20675 20706-20708 20712 20717-20719 20722 20994 20997 21000 21003 21016 21018-21019 21022 21024 21027-21029 21032 21035-21036 21043 21054 21059-21061 21075 21080 21082-21083 21091 21100-21101 21104-21106 21122 21124-21125 21127 21132-21133 21135 21137 21139-21142 21146-21150 21152 21154 21157 21159 21161-21162 21172 21185 21192 21765-21767 21780 21783 21785 21788-21790 21809 21812 21815 21821 21823 21826-21827 21831-21832 21834 21836 21847 21850 21852 21861 21863 21867-21868 21872 21874-21877 21879 21886-21887 21942 21952 21966 21970 21972 21977-21978 21989-21990 21999 22005 22015 22342-22343 22348 22350 22352 22354 22356-22358 22360-22362 22364-22365 22374 22384 22390 22399 22482 22493 22517 22519 22525 22527 22531 22554-22555 22561 22563 22568 22570 22575 22577 22579 22585 22589-22591 22599 22602-22603 22605-22606 22619 22622-22623 22627-22628 22630 22632-22633 22635-22637 22639 22644 22647-22648 22650 22654 22656 22658-22659 22661 22673 22682-22683 22685 22687-22688 22694 22698-22699 22702 22709-22711 22713 22715-22716 22720 22722 22724-22725 22728-22730 22733-22734 22737 22740 22744-22746 22753 22757 22761 22764-22765 22769-22770 22779 22781 22819 22830 22915 22922 22925-22926 22930 22936 22938 22944 22949 22951 22953 22957 23040-23041 23043 23045 23050 23056 23059 23063 23065 23067-23068 23071 23075 23078-23080 23082 23085-23089 23092-23093 23095-23096 23098-23099 23101-23102 23104 23106 23113-23114 23116-23117 23120-23121 23123-23124 23126 23131 23136-23137 23169 23171-23172 23174 23180 23182 23185-23187 23196 23201 23203-23206 23208 23211 23215 23220 23224 23226-23227 23230 23296 23299 23892 23895 25431 25445 25453 25457 25460 25465-25466 25470 25497-25499 25502 25511 25513 25515 25517 25519-25522 25526-25527 25535 25537-25538 25544 25560 25568-25569 25571 25578 25581 25585 25590-25591 25593 25679 25693 25707 25710 25721 25749 25757-25758 25767 25769-25771 25774-25775 25782 25784 25819 25822 25838 25846-25847 25851 25853 25859 25864-25866 25877 25883 25887-25888 25895 25901 25907 25910 25914-25915 25917 25919 25924-25926 25930 25935 25937 25942 25949-25950 25967 25975 25981-25982 25988-25989 25992-25993 25996 26005 26007 26010 26025 26031 26041 26049 26051 26054 26060 26063 26065 26073 26076 26078-26079 26095 26097 26102 26109-26111 26114-26115 26119 26121 26124 26126-26127 26129 26133 26138 26151 26156-26157 26169-26170 26174 26191 26200 26205 26211 26223 26228 26236 26239-26240 26262-26263 26267-26268 26275-26276 26286 26291 26303-26304 26315 26330 26349 26365 26367 26373 26375 26381 26393 26397 26415 26420 26422-26423 26431 26433 26436 26439 26445-26446 26448 26451 26454 26456-26457 26460 26463 26482 26488-26489 26493 26495 26498 26501 26508-26509 26512-26514 26523 26525 26529 26531 26537 26543 26545 26551 26563 26565 26569 26572-26573 26575 26589-26590 26596 26599 26605-26606 26612 26614-26615 26621 26711 26715 26717 26724 26729-26730 26733-26734 26736-26737 26741-26742 26744 26750 26783 26799 26801 26804 26807-26808 26810 26812 26821 26826 26843 26847 26851 26854 26860 26864 26866-26867 26869 26872-26874 26879 26881 26883-26884 26886 26889 26891 26897 26900 26902-26903 26907-26908 26916 26918-26921 26923 26925 26928 26932-26933 26938 26941 26944-26945 26955 26961 26969-26970 26977-26978 26983 26986 27003-27004 27010 27015 27019 27023 27027-27028 27031 27039 27041-27043 27048 27050-27051 27058 27060 27067 27071-27072 27079 27082 27085-27087 27089 27091-27094 27096 27102 27104-27105 27115 27120 27131 27133 27141-27145 27151 27160 27171 27173-27175 27179 27191 27194 27197 27199 27203 27206-27210 27212 27216 27219 27222 27224 27226 27231-27232 27242 27246-27248 27257 27262 27279 27293 27300 27306 27314 27316 27318 27328 27330 27333-27334 27337 27339 27342 27354 27356 27359-27360 27364 27376 27384 27414 27416 27426 27430 27434 27437 27442 27447 27451 27460 27462-27464 27470 27472 27477 27479 27486 27496 27504 27509 27513 27518 27536 27543 27560 27564 27568 27575 27577 27581 27583 27585-27586 27589 27594 27605 27608 27613 27616-27617 27620 27622 27625 27629 27631-27632 27652 27662 27674 27699 27705 27721 27728 27735-27736 27743 27749 27755 27758 27760 27763-27764 27766 27769 27774 27791 27794 27800 27802-27803 27805 27807 27809 27811-27812 27842 27845 27857-27860 27866-27868 27874-27875 27879 27887 27891 27893 27895 27898 27902 27910 27920 27925 27927 27935 27937 27940 27946-27947 27952-27954 27960 27969 27972-27974 27977 27981 27989 27997 28018-28019 28025 28033 28039 28058 28064 28067-28069 28072 28075 28079-28080 28090 28093 28095 28106 28127 28131 28143 28147 28149 28178 28189 28213 28220 28225 28227-28228 28230 28234 28249-28251 28253-28255 28261 28263 28267 28270 28273 28275 28278 28285-28286 28291 28294-28295 28302-28303 28307 28309 28321-28323 28327 28330 28337 28339 28345-28346 28349-28350 28356 28366 28369 28371 28377-28380 28382-28383 28385 28395 28398 28401-28402 28405 28409 28411-28414 28425-28426 28428 28435 28437 28441 28443-28444 28446 28449 28456 28458 28461 28464 28471 28473 28475 28478 28481-28486 28494 28501 28512 28515 28529 28534 28536 28539-28540 28542 28546 28548 28552 28555 28563 28565 28571 28585-28586 28591 28606 28609-28610 28612 28615 28618 28623 28625 28630 28635-28636 28642 28646-28647 28650-28651 28653 28655 28661 28663 29973 29975 30023 30025 30027 30036-30037 30039 30041 30043-30044 30052 30055 30060 30070-30071 30073 30077 30166 30967 30973 30975 31130 31134-31135 31138-31140 31142 31145 31148-31149 31153 31157-31159 31203 31207 31211-31213 31218 31222-31223 31228-31230 31290-31291 31293-31295 31319-31320 31323 31325-31326 31328 31330 31332-31333 31335 31337-31340 31344-31346 31353-31356 31358-31359 31365 31371-31373 31377-31379 31382 31384 31386 31388 31392-31393 31401 31404-31406 31409 31421-31422 31430 31432-31433 31440-31441 31447 31449 31458 31460-31462 31465-31467 31469 31473-31474 31478 31480 31487 31492 31505 31515 31518 31528 31534 31536-31537 31541 31546-31550 31558-31560 31562-31563 31566-31567 31569 31571-31572 31575-31576 31588-31589 31594 31605 31609 31615 31617 31630-31631 31637-31638 31643-31644 31650 31653-31655 31659-31660 31662 31664 31666 31670 31673 31683 31692 31697 31702-31703 31705 31712 31715 31717 31720-31722 31724 31726 31730 31736 31741 31882 31906 31915-31916 31923 31974 31979 31981-31983 31985 31987 31994 31996 31998 32170 32257 32260 32264 32277-32280 32282 32284-32285 32292 32294-32295 32297 32299-32301 32307 32313-32314 32320 32324 32327 32332-32333 32336 32338 32344 32350 32353 32355 32357-32358 32363-32364 32371-32372 32377 32380 32392 32394 32401 32408 32410 32414-32415 32421 32426 32439 32441 32443-32444 32446-32448 32454 32456 32458 32465 32468 32470-32471 32476-32477 32481 32486 32489 32491-32493 32501 32505 32507 32511 32519-32521 32524-32526 32528-32529 32531-32532 32536-32537 32540 32542-32543 32545 32550 32552-32554 32561-32562 32564 32568 32573-32575 32591 32602-32603 32607 32610 32613-32615 32617 32624 32628-32629 32633 32636 32640 32642 32648 32650 32653 32659-32660 32664 32683-32686 32693 32695 32701 32703 32712 32721 32727 32731-32732 32736 32740 32746-32747 32757 32764 33147 33149 33208 33211 33214 33219 33225 33227 33237 33242 33244 33246 33249 33252-33253 33255 33258 33261 33264-33265 33277 33402 33405 33437-33438 33453 33461 33465 33476 33479 33487 33489 33491 33494-33495 33512 33515 33525 33532-33534 33550-33551 33554-33555 33558 33567-33568 33573 33580 33582 33584 33594 33596 33604 33607-33610 33612 33615-33618 33620-33621 33623 33626 33628 33633 33635 33637 33640 33649-33651 33653 33658 33662 33665 33668 33670 33673 33676 33679 33682 33689 33692-33693 33695 33704 33709 33712 33714 33717 33721 33725 33728 33730 33732 33737 33744 33746 33756 33772 33775 33782 33786 33790-33791 33805 33812-33813 33817 33820 33828 33832 33835-33837 33853 33855-33856 33860 33878-33880 33882 33884 33892 33894 33908 33924 33928 33939 33941-33942 33945-33946 33951-33953 33962 33968 33972-33973 33980 33982 33997-33998 34013 34025-34026 34029 34034 34036-34037 34044 34048 34052-34053 34055 34063 34068 34070 34073 34075 34077 34079-34081 34084 34086 34097-34098 34100 34102-34103 34106-34108 34113-34115 34121 34123 34125 34127 34129-34130 34132 34135 34137-34138 34142 34147-34148 34150-34152 34155-34157 34160-34162 34165 34167 34169-34170 34174 34178 34180 34184 34189-34190 34197-34198 34202 34204 34208 34210 34212-34213 34216 34220 34223-34226 34228-34229 34232 34235-34238 34240 34243-34246 34248-34250 34252-34254 34256-34258 34264-34265 34267-34269 34271-34273 34276 34284 34286 34289 34294 34297 34306-34307 34315 34335 34345 34360 34364 34367-34368 34379 34385-34388 34397 34399 34402 34405 34408 34410-34411 34418 34420-34422 34426 34428 34430 34437-34438 34440-34441 34450 34452-34453 34457 34461 34463 34465 34468-34470 34478 34480-34481 34483 34485 34489-34491 34495-34496 34502-34506 34509 34511 34513-34514 34516 34519 34522 34525 34528 34531-34534 34538-34540 34545 34548 34551 34556-34557 34563-34565 34571 34574-34575 34579 34582 34584-34585 34588-34589 34591 34593 34596 34607 34609 34611-34612 34614-34615 34617 34619-34620 34623 34625-34628 34634 34636-34637 34643 34645 34647-34648 34651 34653 34656 34658-34662 34664 34666 34670 34684 34690-34691 34696 34701-34705 34707-34709 34712 34715 34726 34752 34760 34762 34764-34765 34772-34773 34776 34779 34782 34784 34793 34801 34822 34830 34833 34838 34840 34844 34861-34862 34864 34871 34875 34878-34879 34883 34900-34901 34912-34913 34916 34942-34943 34951 34955 34960-34962 34964 34967 34973 34975 34980 34983 34990 34996 34998 35003 35010 35015 35017 35019 35031 35038 35040 35046 35052 35054-35055 35058 35064 35066-35067 35070-35073 35075-35076 35080 35085 35091 35095 35100 35102 35107 35112 35120 35122 35126 35132 35150 35153 35155 35159 35161 35163-35164 35166 35168 35172 35177 35181 35184 35186 35189 35197 35205 35207 35216-35217 35221 35224 35226 35229-35230 35234-35235 35242 35244-35246 35248-35249 35252 35257 35261 35263 35267 35269 35272 35282-35284 35293-35294 35297-35301 35305-35307 35310 35316-35318 35326-35328 35332 35334 35337 35340-35341 35343 35349 35361 35363-35364 35369 35380-35381 35392 35396 35399-35400 35404 35406 35415-35416 35418-35420 35423 35425 35428-35429 35432-35434 35436-35438 35440 35442 35447 35449-35452 35455-35456 35458 35460 35463-35464 35468 35470-35471 35473 35481-35483 35487-35488 35490 35492 35494 35499-35500 35505-35507 35509 35517 35519 35524-35525 35534 35537 35542 35545 35547-35548 35553-35554 35560 35563 35567-35568 35575-35576 35580 35584 35587-35588 35593 35595-35596 35599-35600 35604 35606 35608 35617 35619 35621-35624 35628-35629 35637-35639 35642-35645 35648 35650-35651 35653 35658-35659 35661 35663-35665 35667-35668 35670 35672 35674 35682-35683 35685 35694-35695 35697 35705 35714 35727 35733 35736-35738 35744 35746-35747 35749 35752-35753 35756 35761 35768 35776-35777 35782 35786 35788 35796 35799-35800 35819 35821 35826 35838 35844 35846 35850-35851 35853-35856 35858-35859 35864 35870 35875 35877 35879 35884-35885 35889 35895-35896 35899 35903 35908-35910 35915 35918-35919 35922 35934 35936-35937 35939 35941 35962 35969 35973-35974 35976 35981 35984-35986 35988 35997 36004 36006 36010 36020-36021 36023 36026 36031 36036 36049-36050 36061-36062 36067 36072 36079 36082 36085 36089 36100-36101 36103 36112 36124 36126-36128 36131-36132 36143 36150 36152 36161 36163 36168-36169 36175 36181 36183 36189 36191 36193-36194 36202-36203 36206 36231 36243 36247-36248 36252 36269 36275 36279 36281-36283 36286 36288 36290-36291 36293 36296-36298 36302 36309 36312 36320-36321 36323 36328-36329 36331 36333-36334 36336 36347 36359 36364 36374-36375 36388 36393 36397 36401 36407 36409 36421 36430 36437 36451-36452 36459 36467-36468 36470 36472-36473 36478 36482 36485 36495 36509 36514 36534 36540 36544 36555-36556 36558-36559 36580 36584 36599 36608 36611 36615 36617-36618 36621-36623 36625 36627-36628 36631 36634 36637 36639 36641 36643 36645-36646 36651 36653-36654 36659-36660 36662-36663 36668-36670 36677-36678 36682 36684 36686-36687 36697-36698 36704-36705 36707-36708 36710 36716 36718 36725 36733 36740 36745 36747 36749 36751 36756 36760 36762-36765 36767 36769 36775 36780 36782 36784-36785 36788 36797 36811 36818 36822 36824-36825 36828 36830-36831 36836-36837 36840-36841 36843 36848 36853 36855 36858-36861 38951 38953 38958 39040 39042-39043 39047-39048 39051 39053 39055-39056 39058 39064 39066 39074 39080 39085 39096 39424 39432 39436 39438 39448 39450 39459-39460 39463 39465-39468 39472 39555-39556 39559 39561-39563 39585 39590-39591 39594-39595 39597-39598 39602 39608 39610 40798-40799 40811 40813-40814 40823 40827 40881 40889-40890 40895 40901 40904 40906-40907 40910 40917 40934 40943 40946 40951 40955 40957 44956 44967 44978 44982 44984 44987 44995 44997 45002 45004 45010 45014 45018 45024 45030 45032 45037-45039 45041-45042 45044 45054 45420-45421 45423 45425 45437-45438 45471 45486 45491 45500 45502-45503 45509 45512 45515 45517-45518 45522-45523 45534-45535 45537-45538 45547 45550 45558 45561-45563 45566 45661-45662 45783 45790 45812 45815 45823 45827 45830-45831 45842 45848 45852 45854 45863 45867 45869 45871 45876 45879 45881 45883 45890 45892 45895 45900 45904 45906 45908 45910 45920 45924 45927-45928 45931 45934 45941 45946 45950-45951 45956 45958 45960-45962 45966 45968 45975-45978 45980-45982 45989 45997-45998 46002 46007 46010 46013 46019-46020 46022-46023 46027 46029-46031 46040 46042-46043 46045 46047-46048 46051 46066-46067 46069-46070 46075 46084 46089 46094 46099 46107 46120 46133 46144 46158 46164 46195-46196 46202 46208 46210 46219 46237 46249 46252 46254 46263 46266 46271 46273 46285 46295-46296 46311 46327 46344 46357 46363 46365-46366 46374 46376 46389 46398-46399 46407 46409 46411 46413 46416 46418 46421-46422 46425-46427 46430 46432 46439-46440 46442-46444 46448-46449 46451 46464 46466 46469 46471 46474 46478 46482-46484 46486 46490 46496-46497 46499-46500 46507-46510 46513 46530 46593 46596-46598 46602-46603 46605-46607 46614-46615 46617 46627-46630 46635 46637-46638 46643-46645 46647 46652-46654 46658-46659 46661-46664 46667-46668 46672-46673 46680-46681 46684-46686 46688 46690 46696-46697 46700-46701 46703-46704 46709 46726 46730 46734-46735 46737 46739 46741 46743 46745 46748 46750 46752-46753 46755-46757 46759-46760 46762 46765-46766 46768-46770 46786 46848 46856 46858 47189 47362 47365 47377 47413 47425 47427 47429-47430 47434-47436 47441-47445 47447 47452-47453 47455 47457 47459 47468-47470 47473-47474 48130 48132 48604-48605 48607 48610 48615 48620 48625-48626 48629 48635 48637 48925 48945 48948 48954 48956-48958 48962 48969 48973 48986 48988 48994-48995 48998-49001 49003-49004 49013-49014 49020 49043 49046-49047 49052 49080 49083 49085 49089 49091-49092 49094 49098 49101 49105 49107 49109 49114 49117 49121 49125 49129-49130 49133 49138 49141 49144-49145 49150 https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/280/69?format=ascii Optical default J/ApJS/280/69/table2 Catalog of 9,482 model-identified dust-lane spheroidal galaxy (DLSG) candidates from the DESI Legacy Imaging Surveys (DESI-LS) recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int DESI DESI-LS DR8 unique identifier (brickid_objid) meta.id;meta.main char RAJ2000 Right Ascension (J2000) deg pos.eq.ra;meta.main DEJ2000 [-65.3/84.3] Declination (J2000) deg pos.eq.dec;meta.main rmag [10.8/17] DESI apparent r band magnitude mag phot.mag;em.opt.R float imag [11.7/18.3]? DESI apparent i band magnitude (1) mag phot.mag;em.opt.I float nullable zmag [10/18] DESI apparent z band magnitude mag phot.mag;em.opt.I float z [0.01/0.07] Galaxy redshift (2) src.redshift float Prob [0.5/1] Probability that each galaxy is predicted as a DLSG by the model stat.probability double