Supernova feedback and the bend of the Tully-Fisher relation

M. E. De Rossi, P. B. Tissera, S. E. Pedrosa

Research output: Contribution to journalConference articlepeer-review


We have studied the origin of the Tully-Fisher relation by analysing hydrodynamical simulations in a ΔCDM universe. We found that smaller galaxies exhibit lower stellar masses than those predicted by the linear fit to high mass galaxies (fast rotators), consistently with observations. In this model, these trends are generated by the more efficient action of supernova feedback in the regulation of the star formation in smaller galaxies. Without introducing scale-dependent parameters, the model predicts that the Tully-Fisher relation bends at a characteristic velocity of ∼100 km s-1, in agreement with previous observational and theoretical findings.

Original languageEnglish
Pages (from-to)56-57
Number of pages2
JournalRevista Mexicana de Astronomia y Astrofisica: Serie de Conferencias
Publication statusPublished - 1 Dec 2011
Event13th Latin American Regional Meeting of the International Astronomical Union, LARIM 2010 - Morelia, Michoacan, Mexico
Duration: 8 Nov 201012 Nov 2010


  • Cosmology: Theory
  • Galaxies: Evolution
  • Galaxies: Formation

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics


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