Impact of supernova feedback on the Tully-Fisher relation

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

Resultado de la investigación: Article

24 Citas (Scopus)

Resumen

Context. Recent observational results have found a bend in the Tully-Fisher relation in such a way that low-mass systems lie below the linear relation described by more massive galaxies. Aims. We intend to investigate the origin of the observed features in the stellar and baryonic Tully-Fisher relations and analyse the role played by galactic outflows on their determination. Methods. Cosmological hydrodynamical simulations which include supernova feedback were performed in order to follow the dynamical evolution of galaxies. Results. We found that supernova feedback is a fundamental process for reproducing the observed trends in the stellar Tully-Fisher relation. Simulated slowly rotating systems tend to have lower stellar masses than those predicted by the linear fit to the massive end of the relation, consistently with observations. This feature is not present if supernova feedback is turned off. In the case of the baryonic Tully-Fisher relation, we also detect a weaker tendency for smaller systems to lie below the linear relation described by larger ones. This behaviour arises as a result of the more efficient action of supernovae in the regulation of the star formation process and in the triggering of powerful galactic outflows in shallower potential wells, which may heat up and/or expel part of the gas reservoir.

Idioma originalEnglish
Número de artículoA89
PublicaciónAstronomy and Astrophysics
Volumen519
N.º9
DOI
EstadoPublished - 2010

Huella dactilar

Tully-Fisher relation
supernovae
outflow
galaxies
well
stellar mass
simulation
star formation
tendencies
trends
heat
gases
regulation
trend
method
gas reservoir

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Citar esto

De Rossi, M. E. ; Tissera, P. B. ; Pedrosa, S. E. / Impact of supernova feedback on the Tully-Fisher relation. En: Astronomy and Astrophysics. 2010 ; Vol. 519, N.º 9.
@article{b2ee660d9a2640b1a5a032d6ed2adab4,
title = "Impact of supernova feedback on the Tully-Fisher relation",
abstract = "Context. Recent observational results have found a bend in the Tully-Fisher relation in such a way that low-mass systems lie below the linear relation described by more massive galaxies. Aims. We intend to investigate the origin of the observed features in the stellar and baryonic Tully-Fisher relations and analyse the role played by galactic outflows on their determination. Methods. Cosmological hydrodynamical simulations which include supernova feedback were performed in order to follow the dynamical evolution of galaxies. Results. We found that supernova feedback is a fundamental process for reproducing the observed trends in the stellar Tully-Fisher relation. Simulated slowly rotating systems tend to have lower stellar masses than those predicted by the linear fit to the massive end of the relation, consistently with observations. This feature is not present if supernova feedback is turned off. In the case of the baryonic Tully-Fisher relation, we also detect a weaker tendency for smaller systems to lie below the linear relation described by larger ones. This behaviour arises as a result of the more efficient action of supernovae in the regulation of the star formation process and in the triggering of powerful galactic outflows in shallower potential wells, which may heat up and/or expel part of the gas reservoir.",
keywords = "galaxy: evolution, galaxy: formation, galaxy: structure",
author = "{De Rossi}, {M. E.} and Tissera, {P. B.} and Pedrosa, {S. E.}",
year = "2010",
doi = "10.1051/0004-6361/201014079",
language = "English",
volume = "519",
journal = "Astronomy and Astrophysics",
issn = "0004-6361",
publisher = "EDP Sciences",
number = "9",

}

Impact of supernova feedback on the Tully-Fisher relation. / De Rossi, M. E.; Tissera, P. B.; Pedrosa, S. E.

En: Astronomy and Astrophysics, Vol. 519, N.º 9, A89, 2010.

Resultado de la investigación: Article

TY - JOUR

T1 - Impact of supernova feedback on the Tully-Fisher relation

AU - De Rossi, M. E.

AU - Tissera, P. B.

AU - Pedrosa, S. E.

PY - 2010

Y1 - 2010

N2 - Context. Recent observational results have found a bend in the Tully-Fisher relation in such a way that low-mass systems lie below the linear relation described by more massive galaxies. Aims. We intend to investigate the origin of the observed features in the stellar and baryonic Tully-Fisher relations and analyse the role played by galactic outflows on their determination. Methods. Cosmological hydrodynamical simulations which include supernova feedback were performed in order to follow the dynamical evolution of galaxies. Results. We found that supernova feedback is a fundamental process for reproducing the observed trends in the stellar Tully-Fisher relation. Simulated slowly rotating systems tend to have lower stellar masses than those predicted by the linear fit to the massive end of the relation, consistently with observations. This feature is not present if supernova feedback is turned off. In the case of the baryonic Tully-Fisher relation, we also detect a weaker tendency for smaller systems to lie below the linear relation described by larger ones. This behaviour arises as a result of the more efficient action of supernovae in the regulation of the star formation process and in the triggering of powerful galactic outflows in shallower potential wells, which may heat up and/or expel part of the gas reservoir.

AB - Context. Recent observational results have found a bend in the Tully-Fisher relation in such a way that low-mass systems lie below the linear relation described by more massive galaxies. Aims. We intend to investigate the origin of the observed features in the stellar and baryonic Tully-Fisher relations and analyse the role played by galactic outflows on their determination. Methods. Cosmological hydrodynamical simulations which include supernova feedback were performed in order to follow the dynamical evolution of galaxies. Results. We found that supernova feedback is a fundamental process for reproducing the observed trends in the stellar Tully-Fisher relation. Simulated slowly rotating systems tend to have lower stellar masses than those predicted by the linear fit to the massive end of the relation, consistently with observations. This feature is not present if supernova feedback is turned off. In the case of the baryonic Tully-Fisher relation, we also detect a weaker tendency for smaller systems to lie below the linear relation described by larger ones. This behaviour arises as a result of the more efficient action of supernovae in the regulation of the star formation process and in the triggering of powerful galactic outflows in shallower potential wells, which may heat up and/or expel part of the gas reservoir.

KW - galaxy: evolution

KW - galaxy: formation

KW - galaxy: structure

UR - http://www.scopus.com/inward/record.url?scp=77957368484&partnerID=8YFLogxK

U2 - 10.1051/0004-6361/201014079

DO - 10.1051/0004-6361/201014079

M3 - Article

AN - SCOPUS:77957368484

VL - 519

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

SN - 0004-6361

IS - 9

M1 - A89

ER -