The initial core mass function due to ambipolar diffusion in molecular clouds

Matthew W. Kunz, Telemachos Ch Mouschovias

Research output: Contribution to journalLetter

Abstract

We show that the ambipolar-diffusion-initiated fragmentation of molecular clouds leads simply and naturally to an initial core mass function (CMF) which is very similar to the initial stellar mass function (IMF) and is in excellent agreement with existing observations. This agreement is robust provided that the three (input) free parameters remain within their range of values suggested by observations. Other, observationally testable, predictions are made.

Original languageEnglish (US)
JournalMonthly Notices of the Royal Astronomical Society: Letters
Volume399
Issue number1
DOIs
StatePublished - Oct 1 2009

Fingerprint

ambipolar diffusion
molecular clouds
stellar mass
fragmentation
prediction
predictions
parameter

Keywords

  • Diffusion
  • ISM: clouds
  • ISM: individual: orion
  • Magnetic fields
  • Stars: formation
  • Stars: luminosity function, mass function

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

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T1 - The initial core mass function due to ambipolar diffusion in molecular clouds

AU - Kunz, Matthew W.

AU - Mouschovias, Telemachos Ch

PY - 2009/10/1

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N2 - We show that the ambipolar-diffusion-initiated fragmentation of molecular clouds leads simply and naturally to an initial core mass function (CMF) which is very similar to the initial stellar mass function (IMF) and is in excellent agreement with existing observations. This agreement is robust provided that the three (input) free parameters remain within their range of values suggested by observations. Other, observationally testable, predictions are made.

AB - We show that the ambipolar-diffusion-initiated fragmentation of molecular clouds leads simply and naturally to an initial core mass function (CMF) which is very similar to the initial stellar mass function (IMF) and is in excellent agreement with existing observations. This agreement is robust provided that the three (input) free parameters remain within their range of values suggested by observations. Other, observationally testable, predictions are made.

KW - Diffusion

KW - ISM: clouds

KW - ISM: individual: orion

KW - Magnetic fields

KW - Stars: formation

KW - Stars: luminosity function, mass function

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JO - Monthly Notices of the Royal Astronomical Society: Letters

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