Matching the observed star formation intensity distribution with empirical laws

Research output: Contribution to journalArticle

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Abstract

This Letter matches the shape of the star formation intensity distribution function to empirical laws such as the Schmidt law. The shape of the distribution at a redshift of 1 is reproduced from the empirical Schmidt law with a critical density, a Schechter distribution of galaxy masses, and the assumption that star formation occurs mainly in exponential disks. The shape of the distribution depends primarily on two values: the characteristic mass m* in the Schechter mass distribution and the characteristic radius r e in the exponential disk. As these characteristic values evolve, they will affect the shape of the distribution function. The expected direction of evolution of the parameters partially cancel each other, leaving the distribution shape relatively invariant.

Original languageEnglish (US)
JournalAstrophysical Journal
Volume581
Issue number2 II
DOIs
StatePublished - Dec 20 2002

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star formation
distribution functions
mass distribution
distribution
galaxies
radii

Keywords

  • Galaxies: evolution
  • Galaxies: high-redshift
  • Stars: formation

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Matching the observed star formation intensity distribution with empirical laws. / Thompson, Rodger I.

In: Astrophysical Journal, Vol. 581, No. 2 II, 20.12.2002.

Research output: Contribution to journalArticle

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