Supernova feedback and the bend of the Tully-Fisher relation

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

Resultado de la investigación: Conference article

Resumen

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.

Idioma originalEnglish
Páginas (desde-hasta)56-57
Número de páginas2
PublicaciónRevista Mexicana de Astronomia y Astrofisica: Serie de Conferencias
Volumen40
EstadoPublished - 1 dic 2011
Evento13th Latin American Regional Meeting of the International Astronomical Union, LARIM 2010 - Morelia, Michoacan, Mexico
Duración: 8 nov 201012 nov 2010

Huella dactilar

Tully-Fisher relation
supernovae
galaxies
stellar mass
star formation
universe
simulation
trends
regulation
trend
parameter

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Citar esto

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Supernova feedback and the bend of the Tully-Fisher relation. / De Rossi, M. E.; Tissera, P. B.; Pedrosa, S. E.

En: Revista Mexicana de Astronomia y Astrofisica: Serie de Conferencias, Vol. 40, 01.12.2011, p. 56-57.

Resultado de la investigación: Conference article

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AU - De Rossi, M. E.

AU - Tissera, P. B.

AU - Pedrosa, S. E.

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AB - 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.

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KW - Galaxies: Evolution

KW - Galaxies: Formation

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