Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links, observed 2026-08-14T11:29:10.541338Z
Paper Citation Record · LEDGER
As of 18 August 2026, this Paper Citation Record lists 35 of 35 outbound references and 2 inbound Pith citation observations for arXiv:1908.09017.
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 2026-08-14T11:29:10.541338Z
One-hop event checks from named stored sources.
Source: scholarly_work_events, retraction_status_cache, observed 2026-08-18T06:34:40.430872+00:00
Pith citing papers itemized under the disclosed page cap.
Source: paper_references, paper_reference_links, observed 2026-08-14T05:43:34.886844Z
A source-named dated measurement, never combined with another source.
Source: pith, observed 2026-07-12T09:38:41.465215Z
35 of 35 outbound references displayed
External citation measurements
No source-named external measurement is stored.
Observation 8c6cf86b-8a7e-40ff-bfe2-669e4b527e3d · outbound
SIGNALS: I. Survey Description Unresolved cited work
Reference 1
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation 2fedb753-d437-41d7-bc7f-0c9d8544c28f · outbound
SIGNALS: I. Survey Description Unresolved cited work
Reference 2
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation db462c5c-3665-4838-9cc0-a1fd021418c9 · outbound
SIGNALS: I. Survey Description Unresolved cited work
Reference 3
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation 100b6945-a209-4e66-b236-f3a3afb9f619 · outbound
SIGNALS: I. Survey Description Unresolved cited work
Reference 4
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation 3278e4bd-6416-477c-912c-c2d10a2c0344 · outbound
SIGNALS: I. Survey Description Unresolved cited work
Reference 5
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation 258b7afd-14fb-4e9a-ae5d-28e96aaac80a · outbound
SIGNALS: I. Survey Description Unresolved cited work
Reference 6
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation 62d8737d-16bc-4bb9-9b57-2fbe20855df9 · outbound
SIGNALS: I. Survey Description Here crowding refers to observing multiple HII regions along the line-of-sight
Reference 7
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation cb03efa6-c508-456c-90de-143aa35bcf35 · outbound
SIGNALS: I. Survey Description Unresolved cited work
Reference 8
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation 8387a6af-5328-4166-bb15-e9b8845f480d · outbound
SIGNALS: I. Survey Description Unresolved cited work
Reference 9
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation 9a8e771a-f932-425b-ac32-228520e3ba74 · outbound
SIGNALS: I. Survey Description Unresolved cited work
Reference 10
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation 384eef24-ad63-47ce-8d62-0416f24a3c1c · outbound
SIGNALS: I. Survey Description The group property of the galaxies was extracted from NED 2 As the data is analyzed, the selection can be adjusted to properly sample the different environments
Reference 11
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation 12550a39-0643-482d-863a-605ace5f1af8 · outbound
SIGNALS: I. Survey Description Unresolved cited work
Reference 12
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation 991d8b16-1cbd-4fbc-9c70-6cca1464d762 · outbound
SIGNALS: I. Survey Description Unresolved cited work
Reference 13
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation 145776ef-c098-4cd9-8892-845893e82cd6 · outbound
SIGNALS: I. Survey Description Figure 7 shows the border of a few H II re- gions derived from this procedure
Reference 14
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation 0a198e0e-a4c3-4ee7-ba44-fa9ac69af3a5 · outbound
SIGNALS: I. Survey Description Unresolved cited work
Reference 15
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation 9393df1c-a6ea-431b-a873-1a5e052d4de8 · outbound
SIGNALS: I. Survey Description Unresolved cited work
Reference 16
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation d4155f8a-9c36-417e-9764-445c2b414bb1 · outbound
SIGNALS: I. Survey Description Unresolved cited work
Reference 17
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation 6f786411-6680-4e5c-a719-cb6f54cca61e · outbound
SIGNALS: I. Survey Description Unresolved cited work
Reference 18
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation 18931904-df71-484a-a064-ffa0e3cd2739 · outbound
SIGNALS: I. Survey Description Unresolved cited work
Reference 19
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation 5a960095-1c2a-49aa-a5a1-b9256df7d289 · outbound
SIGNALS: I. Survey Description Unresolved cited work
Reference 21
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation b1bfc547-4b89-4f10-9588-e80e631fa2cb · outbound
SIGNALS: I. Survey Description Unresolved cited work
Reference 22
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation 906d9cd5-7ea5-4de7-a495-328c5c2b974b · outbound
SIGNALS: I. Survey Description Unresolved cited work
Reference 23
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation 12cbe00c-6602-46c0-b27b-7984f5250e7d · outbound
SIGNALS: I. Survey Description Unresolved cited work
Reference 24
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation 44061e6b-3953-46bf-9b4b-2172d04703d7 · outbound
SIGNALS: I. Survey Description Unresolved cited work
Reference 25
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation c2986c00-7d3b-491b-ba2a-506984deb737 · outbound
SIGNALS: I. Survey Description (2014), 2) Sakai et al
Reference 27
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation d5fc21e3-6a40-44fb-8258-7f4b185a1494 · outbound
SIGNALS: I. Survey Description (2015), 10) Skillman et al
Reference 28
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation f4a97e9d-66ec-41f7-bd5d-bc545620baed · outbound
SIGNALS: I. Survey Description Unresolved cited work
Reference 29
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation a90afd80-3860-4ae5-a2e5-93b7eae0b4fa · outbound
SIGNALS: I. Survey Description Unresolved cited work
Reference 30
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation 0f5b6f0e-f440-485b-b3aa-7dba03c46a43 · outbound
SIGNALS: I. Survey Description Unresolved cited work
Reference 32
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation 96b0e5f4-9b3c-4e2c-8d72-c0fb310559c0 · outbound
SIGNALS: I. Survey Description Unresolved cited work
Reference 33
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation e9ed1025-2cfa-42ad-b3a3-b3309986546a · outbound
SIGNALS: I. Survey Description Unresolved cited work
Reference 34
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation 843c4459-ff06-4c18-aac7-c35b1ad4d11d · outbound
SIGNALS: I. Survey Description This paper has been typeset from a T EX/LATEX file prepared by the author
Reference 35
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation beedb73d-5fb5-4c67-b2f6-f8fbdd2f3865 · outbound
SIGNALS: I. Survey Description Without being exhaustive, we can mention works using mid-infrared and radio observations of the Milky Way (e.g
Reference 2015
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation 19502ab4-b712-4051-b628-ab26f3be016b · outbound
SIGNALS: I. Survey Description to resolve gas ionization structures and the ionizing star content of the nebulae (e.g
Reference 2017
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.
Observation 331cfafb-7bf2-4044-acb6-fab3d746e925 · outbound
SIGNALS: I. Survey Description SDSS-V: Pioneering Panoptic Spectroscopy
Reference 2019
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation d29f9b5d-9e11-4cc2-ae73-d246e212866f · inbound
O CAESAR: The Optical CAtalogue of Extragalactic SupernovA Remnants SIGNALS: I. Survey Description
Reference 1
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 40f86c5e-da3d-4ec6-9afb-9f8941fa2a0b · inbound
Exploring the synergies of $[\mathrm{O\,II}]\lambda 3727$ with MUSE spectroscopy in PHANGS H II regions SIGNALS: I. Survey Description
Reference 21
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-18T06:34:40.430872+00:00.