How to plant a merger tree

Rachel S. Somerville, Tsafrir S. Kolatt

Research output: Contribution to journalArticlepeer-review

283 Scopus citations

Abstract

We investigate several approaches for constructing Monte Carlo realizations of the merging history of virialized dark matter haloes ('merger trees') using the extended Press-Schechter formalism. We describe several unsuccessful methods in order to illustrate some of the difficult aspects of this problem. We develop a practical method that leads to the reconstruction of the mean quantities that can be derived from the Press-Schechter model. This method is convenient, computationally efficient, and works for any power spectrum or background cosmology. In addition, we investigate statistics that describe the distribution of the number of progenitors and their masses as a function of redshift.

Original languageEnglish (US)
Pages (from-to)1-14
Number of pages14
JournalMonthly Notices of the Royal Astronomical Society
Volume305
Issue number1
DOIs
StatePublished - May 1 1999

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Keywords

  • Cosmology: theory
  • Dark matter
  • Galaxies: clusters: general
  • Galaxies: formation

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