Carnegie Supernova Project

E183928

astronomical research project observational cosmology project supernova survey

The Carnegie Supernova Project is an astronomical research initiative focused on observing and characterizing supernovae to improve measurements of cosmic distances and the expansion of the universe.

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All labels observed (3)

Label	Occurrences
Carnegie Supernova Project canonical	1
Carnegie Supernova Project I	1
Carnegie Supernova Project II	1

How this entity was disambiguated

This entity first appeared as the object of triple T1639852 — 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: Carnegie Supernova Project
Context triple: [Carnegie Observatories, notableProject, Carnegie Supernova Project]

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. SN 1572
SN 1572 is a historically significant supernova in the constellation Cassiopeia whose detailed observations by Tycho Brahe helped challenge the Aristotelian view of an unchanging heavens.
C. Tolman surface brightness test
The Tolman surface brightness test is an observational cosmology method that checks whether the universe is expanding by examining how the surface brightness of distant galaxies diminishes with redshift.
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. Dark Energy Camera
The Dark Energy Camera is a powerful wide-field astronomical imaging instrument designed to study dark energy and map the large-scale structure of the universe.
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: Carnegie Supernova Project
Target entity description: The Carnegie Supernova Project is an astronomical research initiative focused on observing and characterizing supernovae to improve measurements of cosmic distances and the expansion of the universe.

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. SN 1572
SN 1572 is a historically significant supernova in the constellation Cassiopeia whose detailed observations by Tycho Brahe helped challenge the Aristotelian view of an unchanging heavens.
C. Tolman surface brightness test
The Tolman surface brightness test is an observational cosmology method that checks whether the universe is expanding by examining how the surface brightness of distant galaxies diminishes with redshift.
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. Dark Energy Camera
The Dark Energy Camera is a powerful wide-field astronomical imaging instrument designed to study dark energy and map the large-scale structure of the universe.
F. None of above. chosen

Statements (46)

Predicate	Object
instanceOf	astronomical research project ⓘ observational cosmology project ⓘ supernova survey ⓘ
affiliation	Carnegie Institution for Science ⓘ linked to: Carnegie Institution of Washington Carnegie Observatories ⓘ
aimsTo	build a uniform supernova sample for cosmology ⓘ characterize supernova host galaxies ⓘ improve cross-band photometric calibration ⓘ
contributesTo	calibration of Type Ia supernovae as standard candles ⓘ constraints on dark energy equation of state ⓘ constraints on the Hubble constant ⓘ
country	United States ⓘ linked to: United States of America
dataProduct	calibrated photometric catalogs ⓘ supernova light curves ⓘ supernova spectra ⓘ
field	astronomy ⓘ astrophysics ⓘ cosmology ⓘ
goal	improve measurements of cosmic distances ⓘ improve measurements of the Hubble diagram ⓘ obtain detailed spectroscopy of supernovae ⓘ obtain homogeneous photometry of supernovae ⓘ provide high-quality light curves of supernovae ⓘ reduce systematic uncertainties in supernova cosmology ⓘ
hasPhase	Carnegie Supernova Project I ⓘ linked to: Carnegie Supernova Project Carnegie Supernova Project II ⓘ linked to: Carnegie Supernova Project
location	Las Campanas Observatory ⓘ
observes	intermediate-redshift supernovae ⓘ nearby supernovae ⓘ
publicationType	peer-reviewed journal articles ⓘ supernova data releases ⓘ
researchFocus	Type Ia supernovae ⓘ cosmic distance scale ⓘ dark energy constraints ⓘ expansion of the universe ⓘ supernovae ⓘ
startTime	mid-2000s ⓘ
usesInstrument	Las Campanas Observatory telescopes ⓘ Magellan telescopes ⓘ linked to: Magellan Telescopes Swope Telescope ⓘ du Pont Telescope ⓘ
usesMethod	near-infrared photometry ⓘ optical photometry ⓘ optical spectroscopy ⓘ time-series observations ⓘ
website	https://csp.obs.carnegiescience.edu/ ⓘ

How these facts were elicited

Referenced by (3)

Full triples — surface form annotated when it differs from this entity's canonical label.

Carnegie Observatories → notableProject → Carnegie Supernova Project ⓘ

Carnegie Supernova Project → hasPhase → Carnegie Supernova Project I ⓘ

linked to: Carnegie Supernova Project

Carnegie Supernova Project → hasPhase → Carnegie Supernova Project II ⓘ