The role of spin in the formation and evolution of galaxies

Zachory K. Berta, Raul Jimenez, Alan F. Heavens, Ben Panter

Research output: Contribution to journalArticlepeer-review

Abstract

Using the Sloan Digital Sky Survey spectroscopic sample, we estimate the dark matter halo spin parameter. for similar to 52 000 disc galaxies for which MOPED star formation histories are available. We investigate the relationship between spin and total stellar mass, star formation history and environment. First, we find a clear anticorrelation between stellar mass and spin, with low-mass galaxies generally having high dark matter spins. Secondly, galaxies which have formed more than similar to 5 per cent of their stars in the last 0.2 Gyr have more broadly distributed and typically higher spins (including a significant fraction with lambda > 0.1) than galaxies which formed a large fraction of their stars more than 10 Gyr ago. Finally, we find little or no correlation between the value of spin of the dark halo and environment as determined both by proximity to a new cluster catalogue and a marked correlation study. This agrees well with the predictions from the linear hierarchical torquing theory and numerical simulations.

Original languageEnglish
Pages (from-to)197-204
Number of pages8
JournalMonthly Notices of the Royal Astronomical Society
Volume391
Issue number1
DOIs
Publication statusPublished - 21 Nov 2008

Keywords

  • stars: stellar populations
  • galaxies: general
  • DIGITAL SKY SURVEY
  • DARK-MATTER HALOES
  • TULLY-FISHER RELATION
  • ANGULAR-MOMENTUM
  • STAR-FORMATION
  • TIDAL TORQUES
  • DISK GALAXIES
  • CLUSTER DETECTION
  • HUBBLE SEQUENCE
  • ROTATION CURVES

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