Gustav A. Tammann
E1010303
Gustav A. Tammann was a prominent Swiss astronomer known for his work on extragalactic distance scales and the expansion rate of the universe.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Gustav A. Tammann canonical | 1 |
| Gustav Andreas Tammann | 1 |
| Gustav Tammann | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11210515 — 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: Gustav A. Tammann Context triple: [Allan R. Sandage, notableStudent, Gustav A. Tammann]
-
A.
Otto Schmidt
Otto Schmidt was a prominent Soviet scientist, mathematician, and Arctic explorer who played a key role in leading and organizing major polar expeditions in the early 20th century.
-
B.
Wilhelm Zaisser
Wilhelm Zaisser was a German communist politician and intelligence officer who became the first head of East Germany’s Ministry for State Security (Stasi) in the early 1950s.
-
C.
Johann Lillienstedt
Johann Lillienstedt was a Swedish diplomat and statesman active in the early 18th century who represented Sweden in major international negotiations.
-
D.
Maximilian Emil Hehl
Maximilian Emil Hehl was a German-born architect known for his influential work in Brazil, most notably helping shape the neo-Gothic architectural landscape of São Paulo.
-
E.
Ludwig Borchardt
Ludwig Borchardt was a German Egyptologist and archaeologist best known for his early 20th-century excavations in Egypt and the discovery of the bust of Nefertiti.
- 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: Gustav A. Tammann Target entity description: Gustav A. Tammann was a prominent Swiss astronomer known for his work on extragalactic distance scales and the expansion rate of the universe.
-
A.
Otto Schmidt
Otto Schmidt was a prominent Soviet scientist, mathematician, and Arctic explorer who played a key role in leading and organizing major polar expeditions in the early 20th century.
-
B.
Wilhelm Zaisser
Wilhelm Zaisser was a German communist politician and intelligence officer who became the first head of East Germany’s Ministry for State Security (Stasi) in the early 1950s.
-
C.
Johann Lillienstedt
Johann Lillienstedt was a Swedish diplomat and statesman active in the early 18th century who represented Sweden in major international negotiations.
-
D.
Maximilian Emil Hehl
Maximilian Emil Hehl was a German-born architect known for his influential work in Brazil, most notably helping shape the neo-Gothic architectural landscape of São Paulo.
-
E.
Ludwig Borchardt
Ludwig Borchardt was a German Egyptologist and archaeologist best known for his early 20th-century excavations in Egypt and the discovery of the bust of Nefertiti.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
Swiss scientist
ⓘ
astronomer ⓘ person ⓘ |
| affiliation | Astronomical Institute of the University of Basel ⓘ |
| awardReceived |
Albert Einstein Medal
ⓘ
Karl Schwarzschild Medal ⓘ |
| citizenship | Switzerland ⓘ |
| collaboratedWith |
Abhijit Saha
ⓘ
Allan Sandage ⓘ
linked to:
Allan R. Sandage
|
| countryOfCitizenship | Switzerland ⓘ |
| dateOfBirth | 1932-07-24 ⓘ |
| dateOfDeath | 2019-01-06 ⓘ |
| educatedAt |
ETH Zurich
ⓘ
University of Basel ⓘ |
| employer | University of Basel ⓘ |
| era |
20th-century astronomy
ⓘ
21st-century astronomy ⓘ |
| familyName | Tammann ⓘ |
| fieldOfWork |
astronomy
ⓘ
cosmology ⓘ extragalactic astronomy ⓘ |
| gender | male ⓘ |
| givenName | Gustav ⓘ |
| knownFor |
determination of the Hubble constant
ⓘ
research on expansion rate of the universe ⓘ work on extragalactic distance scale ⓘ |
| languageSpoken | German ⓘ |
| memberOf |
German Academy of Sciences Leopoldina
ⓘ
International Astronomical Union ⓘ |
| name |
Gustav Andreas Tammann
ⓘ
linked to:
Gustav A. Tammann
|
| nationality | Swiss ⓘ |
| notableStudent | Bruno Binggeli ⓘ |
| notableWork |
calibration of the extragalactic distance scale using Cepheid variables
ⓘ
studies of the local value of the Hubble constant ⓘ |
| occupation |
astronomer
ⓘ
university professor ⓘ |
| placeOfBirth |
Zürich
ⓘ
linked to:
Zurich
|
| placeOfDeath |
Basel
ⓘ
linked to:
Basel-Stadt
|
| positionHeld |
director of the Astronomical Institute of the University of Basel
ⓘ
professor of astronomy ⓘ |
| researchInterest |
Hubble diagram
ⓘ
Type Ia supernovae ⓘ cosmic distance ladder ⓘ |
| workLocation |
Basel
ⓘ
linked to:
Basel-Stadt
|
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: Gustav A. Tammann Description of subject: Gustav A. Tammann was a prominent Swiss astronomer known for his work on extragalactic distance scales and the expansion rate of the universe.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.