Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links, observed 2026-08-14T14:26:47.380742Z
Paper Citation Record · LEDGER
As of 15 August 2026, this Paper Citation Record lists 71 of 71 outbound references and 1 inbound Pith citation observation for arXiv:1908.03267.
A citation records a reference. It does not transfer a finding from one paper to another.
Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links, observed 2026-08-14T14:26:47.380742Z
One-hop event checks from named stored sources.
Source: scholarly_work_events, retraction_status_cache, observed 2026-08-15T06:32:42.880941+00:00
Pith citing papers itemized under the disclosed page cap.
Source: paper_references, paper_reference_links, observed 2026-08-11T13:55:45.233187Z
A source-named dated measurement, never combined with another source.
Source: cited_works
71 of 71 outbound references displayed
External citation measurements
No source-named external measurement is stored.
Observation 7d02972a-c3c9-4fce-8018-abd389f67848 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks 1999, A&A, 351, 233
Reference 1
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation de2e7c7b-428f-4958-a64f-6a9b57dcc771 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks Unresolved cited work
Reference 2
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation 79debb23-4ed7-4464-8f0a-81d96e2cb2ea · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks 2002, A&A, 386, 622 ALMA Partnership, Brogan, C
Reference 3
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation aff6fdf4-6dd5-49e9-a433-a28247cd4b48 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks M., Wilner, D
Reference 4
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 788a107e-64a4-47a6-ab30-bddc094a4947 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks M., Wilner, D
Reference 5
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation f9a5c404-2e30-44a4-be93-31c4b4a5b8b2 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks M., Wilner, D
Reference 6
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation 90a26357-7a84-4d5a-9a41-d7ae91ec90d0 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks M., Huang, J., P´ erez, L
Reference 7
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation 9e05bec6-8444-459c-92c4-94aed55373df · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks P., van der Marel, N., et al
Reference 8
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 219e07be-a5e9-4ab4-8b02-340a9143abbe · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks P., Trapman, L., et al
Reference 9
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 3af531a9-479d-4eb9-9216-2481584d8efe · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks A., Carpenter, J
Reference 10
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation f6df292a-542e-4f05-a1dd-009367cccf2d · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks 2014, Protostars and Planets VI, 691
Reference 11
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation 09d562c7-45bf-44bc-947e-a6be860f6bd1 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks A., Aikawa, Y., Blake, G
Reference 12
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation e17f190c-49d1-4665-800a-165a82970a69 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks A., Cleeves, L
Reference 13
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation 2486eba9-0af4-4c06-a190-b6cc1f28bea2 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks A., Du, F., Cleeves, L
Reference 14
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation 6622d71d-f312-4029-89ef-2f5ee47ecfdd · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks The determination of protoplanetary disk masses
Reference 15
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation d4137241-6cda-4d7a-869d-43b7fff37fe9 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks A., Cleeves, L
Reference 16
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation a56fdccd-ca9f-454c-b455-b683cc1fdcda · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks A survey of C2H, HCN, and C18O in protoplanetary disks
Reference 17
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 254551bf-1ff1-48c0-a190-dcf15203fdb2 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks 2012, A&A, 539, A148
Reference 18
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 973158bd-6beb-4dea-a5b3-7f99b00340c2 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks D., Walsh, C., & van Dishoeck, E
Reference 19
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 98750d61-0959-4d28-a796-529c607a3dad · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks S., Cranmer, S
Reference 20
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation fc77c3a4-05c0-4bdf-9723-be93ea364e14 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks M., et al
Reference 21
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation 92e188e2-cfb4-4fe8-8245-bce7475088c9 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks I., Adams, F
Reference 22
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation c74ff452-7d6f-40af-8f73-3336de3202b5 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks I., Bergin, E
Reference 23
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation b5507e1a-3956-4ef4-b7df-eeec46b1587e · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks I., ¨Oberg, K
Reference 24
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation aa95a0fc-1b66-410e-b7fa-b354c4ab4d89 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks E., Evans, Neal J., I., Ramos, A., Yu, M., & Willacy, K
Reference 25
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation bf2d232c-f893-4b1f-a2c2-501cf0759465 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks Unresolved cited work
Reference 26
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation 679ce98e-3f71-43c2-9e88-cc88828d96a9 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks P., & Dominik, C
Reference 27
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation d5f66ee9-76e0-400b-a349-79c72da87cbf · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks P., Juhasz, A., Pohl, A., et al
Reference 28
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 038b7825-a651-41e7-a242-6a1796e30680 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks Unresolved cited work
Reference 29
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation da55a0d4-be19-4985-a572-51bbd65cb1b6 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks 2018, A&A, 612, A104
Reference 30
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation 4181e1f8-11b7-4514-8f45-5a61b0f85eb6 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks I., Bergin, E
Reference 31
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation aa6767f9-7dd6-4f1e-95cf-5234c291caa0 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks M., Hughes, A
Reference 32
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation 9f2d03c8-903c-48e9-9c30-a92b69645694 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks 1981, PTPS, 70, 35
Reference 33
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation 0542ceb1-ea02-419a-a80f-bda7438a65b8 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks 2010, ApJ, 714, 1511
Reference 34
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation da66742c-8621-4fd6-824a-546604170bf4 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks 2016, Physical Review Letters, 117, 251101
Reference 35
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation f3be4e2a-52c5-48cc-a2c7-7e215172b22c · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks F., et al
Reference 36
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 3805ba10-1518-401b-bb5a-ce6d8e795e7b · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks J., & Hartmann, L
Reference 37
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation 21c5aa4c-2f38-4a6b-880f-4702d6aad4ed · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks J., & Bergin, E
Reference 38
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 7c5a5f20-a98f-43ca-bd86-97c20117c2fd · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks R., Bergin, E
Reference 39
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation 6e977413-d003-47db-a9bf-aba921fda7c7 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks 2018, ApJL, 868, L5
Reference 40
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation 9bb6f622-7e35-450f-977c-ceb415efa9bb · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks J., Pascucci, I., et al
Reference 41
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 3538de3b-362b-4594-a9fd-56b9f25d3c77 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks Unresolved cited work
Reference 42
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 837e61d7-3b49-4a50-97ef-8d6e0d2f224c · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks F., Rosotti, G., Testi, L., et al
Reference 43
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation f32ad5be-d1a2-4509-a87c-d984fe6ca6a8 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks K., Bergin, E
Reference 44
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation a19ad2bf-4b13-494c-8700-a0e515992fc8 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks 2007, in Astronomical Society of the Pacific Conference Series, Vol
Reference 45
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation e0e3dbc7-afc1-4dc1-be73-1610c93acf15 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks Unresolved cited work
Reference 46
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation a4940b12-280e-4a92-8a4b-c3f26ae78853 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks F., & Bruderer, S
Reference 47
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation b09475f0-9242-4fa6-af83-ea464108873c · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks F., Kama, M., & Bruderer, S
Reference 48
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 424e00e5-e2df-42e7-b77e-6f87cd26c7ed · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks F., Williams, J
Reference 49
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 3f704f36-0ff8-4cb0-a911-af154ef4eb3b · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks 2017, ApJ, 849, 130
Reference 50
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation 7051da0b-a606-416f-9b5b-7384a038ea2f · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks S., & Wilner, D
Reference 51
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation f2eb8e23-8754-4eb6-8d75-a5572103d52d · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks L., M´ enard, F., et al
Reference 52
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation 3de17f43-1707-4274-ac03-b6c59b2c0bc3 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks B., Hubickyj, O., Bodenheimer, P., et al
Reference 53
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 6f6c21ce-1f00-49c3-8391-217a8270bfe2 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks I., Andrews, S
Reference 54
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 13cfc611-4a54-4b34-bbfe-e5bd18addedd · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks I., Wilner, D
Reference 55
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation c8839ddc-c4bb-4561-aa52-af5d39e0aec7 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks 2015, A&A, 579, A82
Reference 56
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation fe167f29-fb35-4f29-a8d3-69912cdd71ae · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks A., Boogert, A
Reference 57
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation 70520626-2599-4b43-8270-63155b5cc065 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks R., Bergin, E
Reference 58
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation 1290002b-a7b3-4c7d-aaff-01c8d2055d62 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks M., Birnstiel, T., Pani´ c, O., Dullemond, C
Reference 59
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation 259a4fe4-ab9c-47c5-a1ed-8298343aa210 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks A., Drake, J
Reference 60
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation 08a46e16-352d-47e2-8911-4b9c99451c58 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks F., & Bruderer, S
Reference 61
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation 26b1025d-e8a9-495a-b5b6-6a6856445099 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks Protoplanetary disk rings and gaps across ages and luminosities
Reference 62
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation e7a5f1c0-2435-423f-b935-7d2d8d9705d6 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks P., & Best, W
Reference 63
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation 11340cee-eab4-48bb-8ddb-e191d6192843 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks P., & Cieza, L
Reference 64
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation 90196717-5a39-4321-bf7f-4d98981cf73f · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks P., & McPartland, C
Reference 65
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation 90941b17-b334-436c-abd9-e78f3214c855 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks Unresolved cited work
Reference 66
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation c2012ebf-e0ef-4452-9ecd-428a21fe89b7 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks 2017, ApJ, 835, 162
Reference 67
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation 140d349b-8cc4-486d-af54-c68669431f2d · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks E., Turner, N
Reference 68
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation 8a68c522-5818-4a56-9542-10a3f97c8f90 · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks A., Blake, G
Reference 69
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation 16fc5d5a-76b2-4b15-a9bb-dc764d99884b · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks Unresolved cited work
Reference 70
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 2b6358c9-1bfc-4461-8ecb-fd43018f0daf · outbound
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks M., & Blake, G
Reference 71
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation b78ddd64-8d2a-4f0e-a945-762fa365a06b · inbound
A Chemical Inventory of the Disk around the Class 0 Protostar L1527 IRS with ALMA Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks
Reference 154
Source-reported events for the cited work
Unavailable: canonical work link unavailable.