ALFALFA survey
E918812
The ALFALFA survey is a large-scale astronomical project that used the Arecibo radio telescope to map extragalactic neutral hydrogen (HI) across a significant portion of the sky, greatly enhancing our understanding of the distribution of gas-rich galaxies in the nearby universe.
All labels observed (1)
| Label | Occurrences |
|---|---|
| ALFALFA survey canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11317092 — 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: ALFALFA survey Context triple: [Arecibo L-band Feed Array survey, alsoKnownAs, ALFALFA survey]
-
A.
GLIMPSE survey
The GLIMPSE survey is a Spitzer Space Telescope mid-infrared imaging project that mapped the inner Milky Way to study its structure and star-forming regions.
-
B.
UltraVISTA survey
UltraVISTA survey is a deep near-infrared astronomical imaging survey of the COSMOS field designed to study galaxy formation and evolution in the early universe.
-
C.
COSMOS survey
The COSMOS survey is a large, multiwavelength astronomical survey of a two-square-degree patch of the sky designed to study the formation and evolution of galaxies and large-scale structure across cosmic time.
-
D.
VISTA Hemisphere Survey
The VISTA Hemisphere Survey is a large-scale near-infrared sky survey using the VISTA telescope to map the entire southern celestial hemisphere for studies of Galactic structure, nearby stars, and distant galaxies.
-
E.
MIPSGAL survey
The MIPSGAL survey is a Spitzer Space Telescope legacy program that mapped the inner Milky Way in mid-infrared wavelengths to study Galactic structure, star formation, and interstellar dust.
- 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: ALFALFA survey Target entity description: The ALFALFA survey is a large-scale astronomical project that used the Arecibo radio telescope to map extragalactic neutral hydrogen (HI) across a significant portion of the sky, greatly enhancing our understanding of the distribution of gas-rich galaxies in the nearby universe.
-
A.
GLIMPSE survey
The GLIMPSE survey is a Spitzer Space Telescope mid-infrared imaging project that mapped the inner Milky Way to study its structure and star-forming regions.
-
B.
UltraVISTA survey
UltraVISTA survey is a deep near-infrared astronomical imaging survey of the COSMOS field designed to study galaxy formation and evolution in the early universe.
-
C.
COSMOS survey
The COSMOS survey is a large, multiwavelength astronomical survey of a two-square-degree patch of the sky designed to study the formation and evolution of galaxies and large-scale structure across cosmic time.
-
D.
VISTA Hemisphere Survey
The VISTA Hemisphere Survey is a large-scale near-infrared sky survey using the VISTA telescope to map the entire southern celestial hemisphere for studies of Galactic structure, nearby stars, and distant galaxies.
-
E.
MIPSGAL survey
The MIPSGAL survey is a Spitzer Space Telescope legacy program that mapped the inner Milky Way in mid-infrared wavelengths to study Galactic structure, star formation, and interstellar dust.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical survey
ⓘ
extragalactic HI survey ⓘ radio survey ⓘ |
| abbreviation | ALFALFA ⓘ |
| contributedTo |
constraints on cosmological models using HI-selected galaxies
ⓘ
identification of ultra-compact high-velocity clouds ⓘ studies of galaxy environment and HI content ⓘ studies of low surface brightness galaxies ⓘ studies of void galaxies ⓘ |
| dataFormat | publicly released catalogs ⓘ |
| dataProduct |
HI line spectra
ⓘ
HI source catalog ⓘ galaxy HI masses ⓘ |
| dataRelease |
40 percent ALFALFA catalog
ⓘ
70 percent ALFALFA catalog ⓘ alpha.100 catalog ⓘ |
| field |
cosmology
ⓘ
extragalactic astronomy ⓘ radio astronomy ⓘ |
| fullName |
Arecibo Legacy Fast ALFA survey
ⓘ
linked to:
Arecibo L-band Feed Array survey
|
| hasHigher |
angular resolution than HIPASS
ⓘ
sensitivity than previous large HI surveys ⓘ spectral resolution than HIPASS ⓘ |
| hostFacility |
Arecibo radio telescope
ⓘ
linked to:
Arecibo Observatory
|
| improvesOn | HI Parkes All Sky Survey ⓘ |
| isLegacySurveyOf | Arecibo Observatory ⓘ |
| observes |
21 cm line emission
ⓘ
extragalactic HI ⓘ gas-rich galaxies ⓘ neutral hydrogen ⓘ |
| redshiftRange | nearby universe ⓘ |
| scienceGoal |
identify low-mass and dwarf galaxies
ⓘ
map extragalactic neutral hydrogen ⓘ measure HI mass function of galaxies ⓘ search for dark galaxies candidates ⓘ study distribution of gas-rich galaxies in the nearby universe ⓘ study large-scale structure traced by HI ⓘ |
| skyCoverage |
high Galactic latitude sky
ⓘ
thousands of square degrees ⓘ |
| spectralLine | HI 21 cm line ⓘ |
| surveyType | blind HI survey ⓘ |
| targetRegion | local universe ⓘ |
| telescopeLocation | Arecibo, Puerto Rico ⓘ |
| usesInstrument |
Arecibo L-band Feed Array
ⓘ
linked to:
Arecibo L-band Feed Array survey
Arecibo Observatory ⓘ |
| usesMethod | drift-scan observing mode ⓘ |
| wavelengthBand | radio ⓘ |
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: ALFALFA survey Description of subject: The ALFALFA survey is a large-scale astronomical project that used the Arecibo radio telescope to map extragalactic neutral hydrogen (HI) across a significant portion of the sky, greatly enhancing our understanding of the distribution of gas-rich galaxies in the nearby universe.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.