Kroupa initial mass function
E887941
The Kroupa initial mass function is a widely used mathematical description of the distribution of stellar masses at birth, refining earlier forms by incorporating a multi-part power-law that better matches observations across low- and high-mass stars.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Kroupa initial mass function canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10756852 — 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: Kroupa initial mass function Context triple: [Salpeter initial mass function, relatedTo, Kroupa initial mass function]
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A.
Salpeter initial mass function
The Salpeter initial mass function is a foundational mathematical description in astrophysics that specifies how many stars of different masses form in a given stellar population, characterized by a power-law distribution favoring low-mass stars.
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B.
Chabrier initial mass function
The Chabrier initial mass function is a widely used model in astrophysics that describes the distribution of stellar masses at birth, particularly improving the representation of low-mass stars compared to earlier formulations.
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C.
The Internal Constitution of the Stars
The Internal Constitution of the Stars is Arthur Eddington’s landmark 1926 astrophysics treatise that laid the foundations for the modern theory of stellar structure and evolution.
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D.
Physical Processes in the Interstellar Medium
Physical Processes in the Interstellar Medium is a foundational astrophysics textbook that systematically explains the physics governing gas, dust, radiation, and plasma in the space between stars.
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E.
Structure and Evolution of the Stars
Structure and Evolution of the Stars is a classic astrophysics textbook by Martin Schwarzschild that systematically develops the theory of stellar interiors and their life cycles.
- 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: Kroupa initial mass function Target entity description: The Kroupa initial mass function is a widely used mathematical description of the distribution of stellar masses at birth, refining earlier forms by incorporating a multi-part power-law that better matches observations across low- and high-mass stars.
-
A.
Salpeter initial mass function
The Salpeter initial mass function is a foundational mathematical description in astrophysics that specifies how many stars of different masses form in a given stellar population, characterized by a power-law distribution favoring low-mass stars.
-
B.
Chabrier initial mass function
The Chabrier initial mass function is a widely used model in astrophysics that describes the distribution of stellar masses at birth, particularly improving the representation of low-mass stars compared to earlier formulations.
-
C.
The Internal Constitution of the Stars
The Internal Constitution of the Stars is Arthur Eddington’s landmark 1926 astrophysics treatise that laid the foundations for the modern theory of stellar structure and evolution.
-
D.
Physical Processes in the Interstellar Medium
Physical Processes in the Interstellar Medium is a foundational astrophysics textbook that systematically explains the physics governing gas, dust, radiation, and plasma in the space between stars.
-
E.
Structure and Evolution of the Stars
Structure and Evolution of the Stars is a classic astrophysics textbook by Martin Schwarzschild that systematically develops the theory of stellar interiors and their life cycles.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
initial mass function
ⓘ
stellar population model ⓘ |
| appliesTo |
resolved stellar populations in nearby galaxies
ⓘ
stars in the Milky Way ⓘ stellar populations ⓘ |
| assumes |
single-star IMF for most applications
ⓘ
universal form in the Milky Way disk ⓘ |
| basedOn | observed stellar mass distributions ⓘ |
| characterizedBy |
different slopes at low and high stellar masses
ⓘ
piecewise power-law slopes ⓘ |
| comparedWith |
Chabrier initial mass function
NERFINISHED
ⓘ
Salpeter initial mass function NERFINISHED ⓘ |
| describes | distribution of stellar masses at birth ⓘ |
| field |
astrophysics
ⓘ
cosmology ⓘ galactic astronomy ⓘ stellar astrophysics ⓘ |
| hasLowerMassLimit | approximately 0.01 solar masses ⓘ |
| hasMathematicalForm | multi-part power-law ⓘ |
| hasSlopeAbove0.5SolarMasses | approximately -2.3 in logarithmic form ⓘ |
| hasSlopeBelow0.5SolarMasses | approximately -1.3 in logarithmic form ⓘ |
| hasUpperMassLimit | approximately 100 solar masses ⓘ |
| hasVariant |
bottom-light Kroupa IMF
NERFINISHED
ⓘ
canonical Kroupa IMF ⓘ top-heavy Kroupa IMF NERFINISHED ⓘ |
| influences |
black hole and neutron star formation rates in simulations
ⓘ
integrated light of stellar populations ⓘ ionizing photon production in galaxies ⓘ rate of core-collapse supernovae in models ⓘ |
| isAlternativeTo | log-normal plus power-law IMFs ⓘ |
| isStandardChoiceIn |
many N-body simulations of star clusters
ⓘ
many extragalactic stellar population studies ⓘ |
| namedAfter | Pavel Kroupa NERFINISHED ⓘ |
| publishedIn | Monthly Notices of the Royal Astronomical Society NERFINISHED ⓘ |
| refines | Salpeter initial mass function NERFINISHED ⓘ |
| relatedTo |
galactic stellar mass function
ⓘ
star formation theory ⓘ stellar evolution ⓘ |
| usedFor |
chemical evolution models of galaxies
ⓘ
cosmological simulations with baryons ⓘ estimating stellar mass-to-light ratios ⓘ estimating total stellar mass of galaxies ⓘ galaxy evolution modeling ⓘ simulations of star clusters ⓘ stellar population synthesis ⓘ |
| yearProposed | 2001 ⓘ |
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: Kroupa initial mass function Description of subject: The Kroupa initial mass function is a widely used mathematical description of the distribution of stellar masses at birth, refining earlier forms by incorporating a multi-part power-law that better matches observations across low- and high-mass stars.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.