Cosmicflows-2 data set
E121004
The Cosmicflows-2 data set is a large compilation of galaxy distance and velocity measurements used to map the three-dimensional structure and motions of galaxies in the nearby universe.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Cosmicflows project | 1 |
| Cosmicflows-2 data set canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1014601 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Cosmicflows-2 data set Context triple: [Laniakea Supercluster, observedUsing, Cosmicflows-2 data set]
-
A.
Laniakea Supercluster
Laniakea Supercluster is a vast cosmic structure encompassing the Milky Way and hundreds of thousands of other galaxies, forming one of the largest known galaxy superclusters in the observable universe.
-
B.
Monoceros Ring stellar stream
The Monoceros Ring stellar stream is a vast, ring-like structure of stars encircling the Milky Way, thought to be the remnant of a disrupted dwarf galaxy.
-
C.
FLRW cosmological models
FLRW cosmological models are a family of solutions to Einstein’s field equations that describe a homogeneous and isotropic expanding or contracting universe, forming the standard framework for modern cosmology.
-
D.
Magellanic Stream
The Magellanic Stream is a vast, trailing ribbon of gas stretching across the sky, stripped from the Magellanic Clouds as they interact gravitationally with the Milky Way.
-
E.
Sagittarius Stream
The Sagittarius Stream is a vast, looping ribbon of stars encircling the Milky Way, created as tidal forces tear apart the infalling Sagittarius Dwarf Spheroidal Galaxy.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Cosmicflows-2 data set Target entity description: The Cosmicflows-2 data set is a large compilation of galaxy distance and velocity measurements used to map the three-dimensional structure and motions of galaxies in the nearby universe.
-
A.
Laniakea Supercluster
Laniakea Supercluster is a vast cosmic structure encompassing the Milky Way and hundreds of thousands of other galaxies, forming one of the largest known galaxy superclusters in the observable universe.
-
B.
Monoceros Ring stellar stream
The Monoceros Ring stellar stream is a vast, ring-like structure of stars encircling the Milky Way, thought to be the remnant of a disrupted dwarf galaxy.
-
C.
FLRW cosmological models
FLRW cosmological models are a family of solutions to Einstein’s field equations that describe a homogeneous and isotropic expanding or contracting universe, forming the standard framework for modern cosmology.
-
D.
Magellanic Stream
The Magellanic Stream is a vast, trailing ribbon of gas stretching across the sky, stripped from the Magellanic Clouds as they interact gravitationally with the Milky Way.
-
E.
Sagittarius Stream
The Sagittarius Stream is a vast, looping ribbon of stars encircling the Milky Way, created as tidal forces tear apart the infalling Sagittarius Dwarf Spheroidal Galaxy.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical data set
ⓘ
galaxy distance catalog ⓘ peculiar velocity catalog ⓘ |
| aimsTo |
combine heterogeneous distance indicators into a unified scale
ⓘ
reduce systematics in distance measurements ⓘ |
| appliesTo |
local universe
ⓘ
nearby galaxies ⓘ |
| assumes | cosmological expansion described by the Hubble law ⓘ |
| basedOn | multiple distance indicators ⓘ |
| characterizes |
large-scale flows of galaxies
ⓘ
three-dimensional distribution of galaxies ⓘ |
| contributesTo |
mapping the cosmic web in the local universe
ⓘ
understanding deviations from pure Hubble flow ⓘ |
| dataType |
compiled observational measurements
ⓘ
heterogeneous distance indicators ⓘ spectroscopic redshifts ⓘ |
| follows | Cosmicflows-1 data set ⓘ |
| hasAccessibility | publicly available to the astronomical community ⓘ |
| hasDomain |
extragalactic astronomy
ⓘ
observational cosmology ⓘ |
| hasVersionNumber | 2 ⓘ |
| includes |
Tully-Fisher relation distances
ⓘ
Type Ia supernova distances ⓘ fundamental plane distances ⓘ surface brightness fluctuation distances ⓘ tip of the red giant branch distances ⓘ |
| measures |
galaxy distances
ⓘ
galaxy peculiar velocities ⓘ galaxy radial velocities ⓘ |
| precedes | Cosmicflows-3 data set ⓘ |
| provides |
distance moduli
ⓘ
peculiar velocity estimates ⓘ redshift-independent distances ⓘ |
| relatedTo |
Cosmicflows-2 data set
self-linksurface differs
ⓘ
surface form:
Cosmicflows project
|
| scale | nearby universe up to tens of megaparsecs ⓘ |
| usedFor |
calibrating distance indicators
ⓘ
constraining the local velocity field ⓘ cosmography of the local universe ⓘ mapping the three-dimensional structure of the nearby universe ⓘ reconstructing the large-scale matter distribution ⓘ studying bulk flows ⓘ studying galaxy peculiar velocities ⓘ studying the Hubble constant locally ⓘ |
| usedIn |
Wiener filter reconstructions of density fields
ⓘ
reconstruction of the local velocity shear field ⓘ studies of the Virgo cluster region ⓘ studies of the local group environment ⓘ studies of the local supercluster ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Cosmicflows-2 data set Description of subject: The Cosmicflows-2 data set is a large compilation of galaxy distance and velocity measurements used to map the three-dimensional structure and motions of galaxies in the nearby universe.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Cosmicflows project