OGLE-I survey

E46173

astronomical survey phase of the Optical Gravitational Lensing Experiment

The OGLE-I survey was the first phase of the Optical Gravitational Lensing Experiment, a pioneering astronomical project that monitored millions of stars to detect gravitational microlensing events and study variable stars in the Milky Way.

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All labels observed (5)

Label	Occurrences
Optical Gravitational Lensing Experiment	9
OGLE-I	3
OGLE-I survey canonical	3
OGLE exoplanet survey	1
OGLE phase I	1

How this entity was disambiguated

This entity first appeared as the object of triple T352923 — 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: OGLE-I survey
Context triple: [Warsaw Telescope, associatedWith, OGLE-I survey]

A. OGLE-IV survey
The OGLE-IV survey is a large-scale astronomical sky survey focused on detecting microlensing events and variable stars, conducted with the Warsaw Telescope at Las Campanas Observatory.
B. UNDSS
UNDSS is the United Nations department responsible for providing leadership, operational support, and oversight of the UN’s security management system to ensure the safety and security of UN personnel and operations worldwide.
C. Sagittarius Dwarf Spheroidal Galaxy
The Sagittarius Dwarf Spheroidal Galaxy is a small, elongated satellite galaxy currently being tidally disrupted and absorbed by the Milky Way.
D. Carnegie Observatories
Carnegie Observatories is a major astronomical research institution known for operating world-class telescopes and conducting cutting-edge studies of the universe.
E. Canis Major Dwarf Galaxy
The Canis Major Dwarf Galaxy is a nearby, faint irregular dwarf galaxy thought to be the closest known satellite galaxy to the Milky Way and currently being tidally disrupted by it.
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: OGLE-I survey
Target entity description: The OGLE-I survey was the first phase of the Optical Gravitational Lensing Experiment, a pioneering astronomical project that monitored millions of stars to detect gravitational microlensing events and study variable stars in the Milky Way.

A. OGLE-IV survey
The OGLE-IV survey is a large-scale astronomical sky survey focused on detecting microlensing events and variable stars, conducted with the Warsaw Telescope at Las Campanas Observatory.
B. UNDSS
UNDSS is the United Nations department responsible for providing leadership, operational support, and oversight of the UN’s security management system to ensure the safety and security of UN personnel and operations worldwide.
C. Sagittarius Dwarf Spheroidal Galaxy
The Sagittarius Dwarf Spheroidal Galaxy is a small, elongated satellite galaxy currently being tidally disrupted and absorbed by the Milky Way.
D. Carnegie Observatories
Carnegie Observatories is a major astronomical research institution known for operating world-class telescopes and conducting cutting-edge studies of the universe.
E. Canis Major Dwarf Galaxy
The Canis Major Dwarf Galaxy is a nearby, faint irregular dwarf galaxy thought to be the closest known satellite galaxy to the Milky Way and currently being tidally disrupted by it.
F. None of above. chosen

Statements (36)

Predicate	Object
instanceOf	astronomical survey ⓘ phase of the Optical Gravitational Lensing Experiment ⓘ
aim	to detect gravitational microlensing events ⓘ to study variable stars in the Milky Way ⓘ
alsoKnownAs	OGLE-I survey ⓘ surface form: OGLE phase I
basedOn	gravitational lensing ⓘ
collaborationType	international collaboration ⓘ
contributedTo	catalogs of variable stars in the Galactic bulge ⓘ evidence for compact dark matter candidates (MACHOs) ⓘ
country	Poland ⓘ
dataType	photometric light curves ⓘ
dataUsage	study of microlensing event statistics ⓘ study of stellar variability ⓘ
discovered	gravitational microlensing events ⓘ numerous variable stars ⓘ
field	astronomy ⓘ astrophysics ⓘ
followedBy	OGLE-II ⓘ surface form: OGLE-II survey
infrastructure	dedicated observing program at Las Campanas Observatory ⓘ
methodology	wide-field CCD imaging ⓘ
monitored	millions of stars ⓘ
observatory	Las Campanas Observatory ⓘ
organization	Astronomical Observatory of the University of Warsaw ⓘ surface form: Warsaw University Observatory
partOf	OGLE-I survey self-linksurface differs ⓘ surface form: Optical Gravitational Lensing Experiment
pioneering	yes ⓘ
precededBy	none (first phase of OGLE) ⓘ
projectType	long-term monitoring survey ⓘ
researchArea	Galactic structure ⓘ gravitational microlensing ⓘ variable stars ⓘ
targetedRegion	Milky Way center ⓘ surface form: Galactic bulge Milky Way ⓘ
techniqueUsed	photometric monitoring ⓘ time-domain astronomy ⓘ
telescopeType	optical telescope ⓘ
timeSampling	multi-epoch observations ⓘ

How these facts were elicited