SHEDR3: All-sky molecular clouds extinction catalog J/AJ/170/185 ivo://CDS.VizieR/J/AJ/170/185 CDS Zhang S. Su Y. Chen X. Fang M. Du F. Zhang S. Yan Q.-Z. Liu X.,Zhang M. Sun Y. Yang Ji 2026-07-10T08:46:00Z 2026-07-10T09:43:30Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr molecular-clouds extinction galaxy-planes milky-way-galaxy visible-astronomy astrophysical-masers radio-astronomy interstellar-medium radio-sources photometry co-line-emission Although interstellar dust extinction serves as a powerful distance estimator, the solar system's location within the Galactic plane complicates distance determinations, especially for molecular clouds (MCs) at varying distances along the line of sight (LoS). The presence of complex extinction patterns along the LoS introduces degeneracies, resulting in less accurate distance measurements to overlapping MCs in crowded regions of the Galactic plane. In this study, we develop the CUSUM-based Jump-point Analysis for Distance Estimation (CU-JADE), a novel method designed to help mitigate these observational challenges. The key strengths of CU-JADE include: (1) sensitivity to detect abrupt jumps in Distance-A{lambda} (D-A) data sets, (2) minimal systematic errors as demonstrated on both mock and observed data, and (3) the ability to combine CUSUM analysis with multiwavelength data to improve the completeness of distance measurements for nearby gas structures, even for extinction values as low as {Delta}AV>=0.15mag. By combining CO survey data with a large sample of stars characterized by high-precision parallaxes and extinctions, we uncovered the multilayered molecular gas distribution in the high-latitude Cepheus region. We also determined accurate distances to MCs beyond the Cygnus Rift by analyzing the intricate structure of gas and extinction within the Galactic plane. Additionally, we constructed a full-sky 3D extinction map extending to 4kpc, which provides critical insights into dense interstellar medium components dominated by molecular hydrogen. These results advance our understanding of the spatial distribution and physical properties of MCs across the Milky Way. 2025AJ....170..185Z https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/170/185 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to II/196 : Vilnius Photometry in two Nebulae (Straizys et al., 1993) II/363 : The band-merged unWISE Catalog (Schlafly+, 2019) II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003) II/328 : AllWISE Data Release (Cutri+ 2013) II/379 : SkyMapper Southern Sky Survey. DR4 (Onken+, 2024) II/389 : The Pan-STARRS release 1 (PS1) Survey - DR2 (Magnier+, 2025) I/350 : Gaia EDR3 (Gaia Collaboration, 2020) I/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022) I/354 : StarHorse2, Gaia EDR3 photo-astrometric distances (Anders+, 2022) V/162 : LAMOST DR11 catalogs (Luo+, 2026) J/ApJS/110/21 : Molecular clouds in Cepheus and Cassiopeia (Yonekura+ 1997) J/ApJ/783/130 : Parallaxes of high mass star forming regions (Reid+, 2014) J/ApJ/786/29 : Catalog of distances to molecular clouds (Schlafly+, 2014) J/MNRAS/484/1838 : Spatial substructure of Cygnus OB2 (Berlanas+, 2019) J/A+A/625/A135 : Gal. interstellar dust Gaia-2MASS 3D maps (Lallement+, 2019) J/ApJ/885/131 : ~200 high-mass SFR plx & pm with VLBI (Reid+, 2019) J/A+A/643/A36 : HI-to-H2 transit. in local diffuse ISM dataset (Bellomi+, 2020) J/MNRAS/493/351 : A large catalogue of molecular clouds (Chen+, 2020) J/A+A/639/A26 : Cold HI, H2 & total H column dens. FITS maps (Kalberla+, 2020) J/MNRAS/502/6080 : New members of Cygnus OB2 from Gaia DR2 (Orellana+, 2021) J/MNRAS/504/2968 : The Alma catalogue of OB stars - II. (Pantaleoni+, 2021) J/MNRAS/508/2370 : Revisiting the Cygnus OB associations (Quintana+, 2021) J/ApJ/911/55 : FUSE survey of H_2_ in the Galactic disk (Shull+, 2021) J/MNRAS/505/5164 : The Gaia view of the Cepheus flare (Szilagyi+, 2021) J/ApJS/257/51 : Morphological classif. of MWISP 12CO mol. clouds (Yuan+, 2021) J/ApJS/262/5 : A CO survey of the entire northern sky (Dame+, 2022) J/MNRAS/511/2302 : Molecular clouds study from 3D extinction maps (Guo+, 2022) J/A+A/664/A174 : Galactic interstellar dust Gaia-2MASS 3D maps (Vergely+, 2022) J/A+A/673/A114 : Improving the open cluster census. II. (Hunt+, 2023) J/ApJ/953/21 : Inverse MultiView. II. 6.7GHz methanol masers (Hyland+, 2023) J/A+A/684/A162 : Starlight-polarization-based tomography (Pelgrims+, 2024) J/A+A/682/A161 : H2 in the diffuse ISM (Skalidis+, 2024) J/AJ/168/203 : Dust clouds masses, color excesses and distances (Sun+, 2024) J/AJ/167/220 : 207 molecular clouds distance measurements; MWISP (Zhang+, 2024) J/A+A/694/A97 : Magnetic field of the Radcliffe Wave (Panopoulou+, 2025) J/AJ/170/24 : Properties of new members in stellar group ASCC 127 (Wang+, 2025) https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/170/185 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/170/185 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/170/185 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/170/185 https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/170/185 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/170/185 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/AJ/170/185/table2 (The all-sky extinction catalog derived from SHEDR3) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/170/185/table2? https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/170/185/table2? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/170/185/table2? 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31937-31938 31944 31956-31957 31959-31961 31965 32137-32138 32143 32161 32176-32177 32186 32188-32189 32191 32200 32202-32205 32207 32225 32228 32232 32234 32239 32241 32257-32259 32265 32267 32276 32278 32280-32282 32292-32294 32297 32300-32301 32351 32372-32373 32375 32381 32383 32419 32507 32513 32522-32523 32526 32535 32541-32542 32544-32546 32552 32576 32578-32579 32582-32584 32588 32591 32600-32602 32604-32605 32768 32771 32813-32814 32816 32848-32850 32861 32875 32879 32896-32898 33047 33074 33081 33088 34591 34612-34613 35434 36288 36707 36713 36801 36829 36864 36867 36873 36875 36880 36883 36885-36887 36892-36893 36897-36899 36914 36918 36920 36922 36927 36943 36962-36963 37008 37010 37013 37016 37018-37019 37021 37033 37035 37056-37058 37060 37066 37073 37075-37078 37081 37083-37084 37086 37090 37149 37152 37154 37181 37183 37188 37190-37193 37201-37203 37219 37250 37253 37255-37257 37262 37272 37291 37296 37298-37299 37303-37304 37306-37307 37320-37322 37325 37327 37344 37347 37349-37354 37380-37381 37383 37387-37390 37410 37412 37432-37433 37435 37445-37446 37448-37449 37451-37452 37454 37462 37468 37470 37472-37474 37480-37481 37483-37485 37493-37495 37520-37521 37523-37524 37559 37569-37571 37573-37575 37584-37586 37589-37591 37633 37636-37637 37642 37644 37647 37649 37652 37654-37655 37658 37661-37663 37670 37672-37673 37675-37677 37684-37686 37689 37691 37694-37695 37737-37739 37766 37778-37779 37781-37783 37940 37942-37943 37948-37950 37972-37974 37976 37978-37979 37982-37983 37988 37998-38001 38003 38072-38074 38076-38077 38101-38103 38120-38121 38123 38136-38137 38141 38147 38153-38154 38159 38168 38170-38171 38176 38187 38191 38196 38198 38200 38203 38207 38215 38221 38224 38226-38227 38229-38230 38235-38238 38246 38249-38254 38281-38283 38288-38289 38291-38293 38296-38298 38304-38305 38308 38337-38339 38342 38344-38345 38348 38416 38418-38420 38422 38448-38450 38455-38456 38458-38459 38468 38487 38499 38508 38513 38580-38581 38584-38586 38592 38597 38600 38602 38618 38643 38655 38834 38840 38931-38932 38934-38935 38937 38939-38940 38959 38961 38963 38969 38976-38978 38980-38981 38983 38988 38990-38991 39017 39019 39055 39058 39064 39077 39104-39106 39108-39109 39111 39116-39117 39119 39132 39134-39135 39143 39149 39152-39154 39156-39157 39159 39180-39182 39212 39214 39216-39217 39219 39224-39226 39315 39334 39412-39414 39487 39503 39509-39511 39515 39530 39533 39535-39538 39544 39546-39547 39573 39623 39631 39665 39668-39669 39671 39704-39705 39707 39712-39713 39715-39716 39719-39720 39722-39723 39729 39732-39733 39735 39772 39774-39775 39784-39785 39787 39804-39806 39808 39816 39818 39840 39842 39861 39863 39867 39873 39875 39881 39883 39912 39944-39946 39952-39954 39965-39967 39981-39983 39988 39992 39994-39995 40005 40017 40020-40022 40026 40037 40039 40041 40043 40046 40050 40052 40056 40064-40066 40072 40075 40080-40081 40130 40132-40133 40135 40141-40144 40150-40151 40153-40158 40164-40165 40167 40172-40174 40180 40182-40184 40192 40194 40528-40529 40531 40533-40534 40537 40540 40577-40579 40588 40590 40612-40614 40703 40706 40960-40962 40964-40965 40968 40970 40975-40977 40981 40983 40987 40990 40993 40995 41002-41003 41008 41010-41011 41020-41022 41024-41025 41027 41032 41034-41035 41048-41049 41053 41060-41061 41100-41102 41104-41105 41112 41136 41138 41142 41147 41149-41151 41180-41181 41193-41195 41208 41210-41211 41215 41220 41222 41246 41254 41258 41264-41266 41330 41343 41386-41387 41390-41391 41424-41425 41428 41430-41431 41435 41438-41439 41446-41447 41489-41491 41496-41498 41520 41522-41523 41536 41538-41539 41547 41600-41602 41604-41605 41607 41611 41633-41635 41952-41953 41955-41956 41959 41972-41973 41975 41980 42028 42035 42038-42039 42042-42043 42046-42047 42071 42075 42082 42085-42087 42096 42098-42100 42102 42114-42115 42243 42245-42246 42248-42250 42254-42255 42258 42265-42267 42269-42271 42274-42275 42288 42290-42291 42309-42311 42326 42636-42637 42640-42642 42652-42654 42656-42657 42677-42679 42684-42685 42687 42740 42744-42746 42751 42908 42910-42911 42920 42922 42924 42927 42936-42938 42941-42942 42953-42958 42980 42982 42993 42995 43128 43130 43132-43133 43160-43162 43164-43165 43167 43172-43174 43176-43177 43183 43187 43190-43194 43196-43197 43216 43218 43224 43236-43238 43259 43261-43263 43284 43286-43287 43289 43291-43293 43296-43297 43312 43337-43338 43340-43341 43343 43348 43352-43353 43365-43366 43375 43384 43426 43432 43524-43525 43527 43529-43533 43536 43538 43588 43591 43597 43604 43606 43608 43622 43634 43659 43669 43671 43681-43684 43686 43712 44053-44055 44084-44085 44087 44093 44114 44117-44120 44122-44123 44125-44130 44140 44142-44146 44149-44150 44153 44156 44221 44239 44261 44291 44295 44301-44303 44306-44307 44310 44313 44315 44322-44323 44325 44327 44335 44352-44353 44355-44358 44372-44373 44375 44388-44389 44391 44396-44397 44404-44405 44407 44412 44534-44535 44540-44541 44543 44574 44835 44863 44870-44871 44880 44882 44884 45060-45062 45074 45077-45079 45116-45118 45124 45126-45127 45132 45135 45146-45147 45150 45152 45154-45155 45160-45162 45164-45165 45168-45170 45174 45212 45214 45228-45230 45236 45238 45248 45572 45574 45580 45582 45621 45697 45699 45707 45729 45754 46825 46827 47109-47111 47117 47119-47120 47122 47128 47140 47237 47265 47547 47603 47612 47614 47711 47733-47735 47739 47744 47746-47747 47824-47825 47828 47900-47901 47903 47908-47909 47911-47912 47920 47925 47927 47933 47942-47943 47952-47954 47956 47969 47977 47979 47984 47986 47988-47989 47996 47998-47999 48003 48005-48007 48013-48014 48018-48019 48021-48022 48024-48025 48038-48040 48042-48043 48048-48050 48052 48054-48055 48064-48065 48067 48069-48071 48074 48076-48077 48079-48080 48082-48086 48094 48102 48116-48117 48153 48156 48159 48181 48183 48185 48187 48198-48199 48236-48238 48241-48244 48246 48249-48250 48269-48271 48273 48275 48284-48285 48287 48293 48296 48299 48309 48328 48330 48332 48352 48356 48376 48378-48379 48563 48569-48572 48574 48641 48654-48655 48685-48687 48696 48698-48699 48721-48723 48768-48769 48771-48773 48778 48784 48790 48796-48798 48809 48816-48817 48819 48825 48827 48865 48867-48870 48873 48875 48897 48900-48901 48908 48912-48913 48915 48918-48919 48951 48955 48993-48995 49008 49010-49012 49014-49015 49020-49022 49043 49077 49105-49108 49110 49113 49115 49120 49136-49137 49145 49147 49150 https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/170/185?format=ascii Optical Radio default J/AJ/170/185/table2 The all-sky extinction catalog derived from SHEDR3 recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int GLON Galactic longitude of extinction component across the sky deg pos.galactic.lon indexed GLAT Galactic latitude of extinction component across the sky deg pos.galactic.lat indexed Nlos [1/11] Number of Line of Sight (LoS) extinctions (Comps) (1) meta.number int Dist [0.16/4.96] Median distance (2) kpc pos.distance float E_Dist [0.16/5.69] Upper 84% boundary in Dist (2) kpc stat.error;stat.max;pos.distance float e_Dist [0.16/4.81] Lower 16% boundary in Dist (2) kpc stat.error;stat.min;pos.distance float Fore-AV [-5e-3/6.82] Mean extinction in the pre-jump distance bin mag phys.absorption float Back-AV [0.14/8.24] Mean extinction in the post-jump distance bin mag phys.absorption float e_Fore-AV [0.094/2.24] Standard deviation in Fore-AV mag stat.error;phys.absorption float e_Back-AV [0.1/2.4] Standard deviation in Back-AV mag stat.error;phys.absorption float Delta-AV [0.15/4.41] Magnitude of extinction jumps (3) mag phys.absorption float Nstar [184/43657] Number of stars meta.number int _RA.icrs Right ascension (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) deg pos.eq.ra indexed _DE.icrs Declination (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) deg pos.eq.dec indexed