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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. © 2010 ESO.

Registro:

Documento: Artículo
Título:Impact of supernova feedback on the Tully-Fisher relation
Autor:De Rossi, M.E.; Tissera, P.B.; Pedrosa, S.E.
Filiación:Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET, Argentina
Instituto de Astronomía y Física Del Espacio, Casilla de Correos 67, 1428 Buenos Aires, Argentina
Palabras clave:galaxy: evolution; galaxy: formation; galaxy: structure; Dynamical evolution; Galaxy: evolution; galaxy: formation; galaxy: structure; Gas reservoir; Heat-up; Linear relation; Low-mass systems; Potential wells; Rotating systems; Star-formation process; Stellar mass; Biology; Cosmology; Galaxies
Año:2010
Volumen:519
Número:9
DOI: http://dx.doi.org/10.1051/0004-6361/201014079
Título revista:Astronomy and Astrophysics
Título revista abreviado:Astron. Astrophys.
ISSN:00046361
CODEN:AAEJA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00046361_v519_n9_p_DeRossi

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Citas:

---------- APA ----------
De Rossi, M.E., Tissera, P.B. & Pedrosa, S.E. (2010) . Impact of supernova feedback on the Tully-Fisher relation. Astronomy and Astrophysics, 519(9).
http://dx.doi.org/10.1051/0004-6361/201014079
---------- CHICAGO ----------
De Rossi, M.E., Tissera, P.B., Pedrosa, S.E. "Impact of supernova feedback on the Tully-Fisher relation" . Astronomy and Astrophysics 519, no. 9 (2010).
http://dx.doi.org/10.1051/0004-6361/201014079
---------- MLA ----------
De Rossi, M.E., Tissera, P.B., Pedrosa, S.E. "Impact of supernova feedback on the Tully-Fisher relation" . Astronomy and Astrophysics, vol. 519, no. 9, 2010.
http://dx.doi.org/10.1051/0004-6361/201014079
---------- VANCOUVER ----------
De Rossi, M.E., Tissera, P.B., Pedrosa, S.E. Impact of supernova feedback on the Tully-Fisher relation. Astron. Astrophys. 2010;519(9).
http://dx.doi.org/10.1051/0004-6361/201014079