DECam Legacy Survey
E380449
The DECam Legacy Survey is a wide-field astronomical imaging project that uses the Dark Energy Camera to map large areas of the sky for studies of galaxy evolution, cosmology, and targets for spectroscopic surveys.
All labels observed (2)
| Label | Occurrences |
|---|---|
| DECam Legacy Survey canonical | 1 |
| DESI Legacy Imaging Surveys | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3695437 — 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: DECam Legacy Survey Context triple: [Víctor M. Blanco 4-meter Telescope, associatedSurvey, DECam Legacy Survey]
-
A.
Dark Energy Survey
The Dark Energy Survey is a large international astronomical project that uses a wide-field camera on a Chilean telescope to map hundreds of millions of galaxies and study the nature of dark energy and cosmic acceleration.
-
B.
Advanced Camera for Surveys
The Advanced Camera for Surveys is a high-resolution imaging instrument on the Hubble Space Telescope designed to capture detailed observations of distant galaxies, galaxy clusters, and other faint astronomical objects.
-
C.
Carnegie-Spitzer-IMACS Survey
The Carnegie-Spitzer-IMACS Survey is an astronomical research project that combines infrared observations from the Spitzer Space Telescope with optical spectroscopy from the IMACS instrument to study the formation and evolution of galaxies across cosmic time.
-
D.
Two Micron All Sky Survey
The Two Micron All Sky Survey (2MASS) is an astronomical survey that mapped the entire sky in near-infrared wavelengths, producing a comprehensive catalog of stars, galaxies, and other celestial objects.
-
E.
Carnegie Irvine Galaxy Survey
The Carnegie Irvine Galaxy Survey is an astronomical project that provides detailed optical imaging and analysis of nearby galaxies to study their structure, formation, and evolution.
- 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: DECam Legacy Survey Target entity description: The DECam Legacy Survey is a wide-field astronomical imaging project that uses the Dark Energy Camera to map large areas of the sky for studies of galaxy evolution, cosmology, and targets for spectroscopic surveys.
-
A.
Dark Energy Survey
The Dark Energy Survey is a large international astronomical project that uses a wide-field camera on a Chilean telescope to map hundreds of millions of galaxies and study the nature of dark energy and cosmic acceleration.
-
B.
Advanced Camera for Surveys
The Advanced Camera for Surveys is a high-resolution imaging instrument on the Hubble Space Telescope designed to capture detailed observations of distant galaxies, galaxy clusters, and other faint astronomical objects.
-
C.
Carnegie-Spitzer-IMACS Survey
The Carnegie-Spitzer-IMACS Survey is an astronomical research project that combines infrared observations from the Spitzer Space Telescope with optical spectroscopy from the IMACS instrument to study the formation and evolution of galaxies across cosmic time.
-
D.
Two Micron All Sky Survey
The Two Micron All Sky Survey (2MASS) is an astronomical survey that mapped the entire sky in near-infrared wavelengths, producing a comprehensive catalog of stars, galaxies, and other celestial objects.
-
E.
Carnegie Irvine Galaxy Survey
The Carnegie Irvine Galaxy Survey is an astronomical project that provides detailed optical imaging and analysis of nearby galaxies to study their structure, formation, and evolution.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical survey
ⓘ
imaging survey ⓘ wide-field sky survey ⓘ |
| abbreviation | DECaLS ⓘ |
| band |
g-band
ⓘ
r-band ⓘ z-band ⓘ |
| collaboratesWith |
Beijing–Arizona Sky Survey
ⓘ
Mayall z-band Legacy Survey ⓘ |
| cosmologicalUse |
constrain dark energy models
ⓘ
measure baryon acoustic oscillations ⓘ |
| dataAccess |
online archive
ⓘ
public ⓘ |
| dataProduct |
calibrated images
ⓘ
source catalogs ⓘ |
| dataRelease |
DR1
ⓘ
DR2 ⓘ DR3 ⓘ DR4 ⓘ DR5 ⓘ DR6 ⓘ DR7 ⓘ DR8 ⓘ DR9 ⓘ |
| hostInstitution |
Lawrence Berkeley National Laboratory
ⓘ
National Optical Astronomy Observatory ⓘ |
| location | Chile ⓘ |
| observatory | Cerro Tololo Inter-American Observatory ⓘ |
| partOf |
DECam Legacy Survey
self-linksurface differs
ⓘ
surface form:
DESI Legacy Imaging Surveys
Dark Energy Spectroscopic Instrument ⓘ
surface form:
Dark Energy Spectroscopic Instrument Legacy Imaging Surveys
|
| primaryScienceGoal |
provide targets for spectroscopic surveys
ⓘ
support the Dark Energy Spectroscopic Instrument survey ⓘ |
| relatedProject |
Dark Energy Survey
ⓘ
Sloan Digital Sky Survey ⓘ |
| scienceGoal |
map large areas of the sky
ⓘ
study cosmology ⓘ study galaxy evolution ⓘ |
| skyCoverage |
Northern Galactic Cap
ⓘ
Southern Galactic Cap ⓘ |
| surveyType | ground-based survey ⓘ |
| telescope |
Víctor M. Blanco 4-meter Telescope
ⓘ
surface form:
Blanco 4-meter telescope
|
| timeframe | 2010s ⓘ |
| usedFor |
galaxy clustering analyses
ⓘ
large-scale structure studies ⓘ searches for rare astronomical objects ⓘ target selection for DESI ⓘ weak lensing studies ⓘ |
| usesInstrument | Dark Energy Camera ⓘ |
| wavelength | optical ⓘ |
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: DECam Legacy Survey Description of subject: The DECam Legacy Survey is a wide-field astronomical imaging project that uses the Dark Energy Camera to map large areas of the sky for studies of galaxy evolution, cosmology, and targets for spectroscopic surveys.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
DESI Legacy Imaging Surveys