skip to main content
LOTERRE

LOTERRE

Astronomy (thesaurus)

Choisissez le vocabulaire dans lequel chercher

Langue des données

| español English
Aide à la recherche

Concept information

mathematical technique > probability theory > probability density function > initial mass function

Terme préférentiel

initial mass function  

Définition(s)

  • In astronomy, the initial mass function (IMF) is an empirical function that describes the initial distribution of masses for a population of stars. The IMF is an output of the process of star formation. The IMF is often given as a probability distribution function (PDF) for the mass at which a star enters the main sequence (begins hydrogen fusion). The distribution function can then be used to construct the mass distribution (the histogram of stellar masses) of a population of stars. It differs from the present day mass function (PDMF), the current distribution of masses of stars, due to the evolution and death of stars which occurs at different rates for different masses as well as dynamical mixing in some populations. (Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Initial_mass_function)

Concept(s) générique(s)

Traductions

URI

http://data.loterre.fr/ark:/67375/MDL-CQTVLCBB-0

Télécharger ce concept:

RDF/XML TURTLE JSON-LD Dernière modif. 24/04/2023