Starburst triggered by compressive tides in galaxy mergers

Research output: Contribution to journalArticle


The tidal field of galaxies is known generally to be disruptive. However, in the case of galaxy mergers, a compressive mode of tidal wave may develop and last long enough to cocoon the formation of star clusters. Using an N‐body simulation of the Antennae galaxies, we derive the positions of these compressive regions and the statistics of their duration. Excellent agreement between the spatial distribution of tides and observed young clusters is found, while the characteristic e‐folding times of 10 to 30 Myr derived for the tidal field compare well with cluster formation time‐scales.


External organisations
  • University of Vienna
  • University of Strasbourg
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Astronomy, Astrophysics and Cosmology


  • galaxies: evolution, galaxies: individual (NGC4038/39) -galaxies: interactions, galaxies: starburst, galaxies: star clusters, stars: formation, Astrophysics
Original languageUnknown
Pages (from-to)1050-1052
Number of pages1
JournalAstronomische Nachrichten
Issue number9-10
Publication statusPublished - 2008 Dec 1
Publication categoryResearch
Externally publishedYes