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Scannapieco, C.; Tissera, P.B.; White, S.D.M.; Springel, V. "Effects of supernova feedback on the formation of galaxy discs" (2008) Monthly Notices of the Royal Astronomical Society. 389(3):1137-1149
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Abstract:

We use cosmological simulations in order to study the effects of supernova (SN) feedback on the formation of a Milky Way-type galaxy of virial mass ∼1012 h-1 M⊙. We analyse a set of simulations run with the code described by Scannapieco et al., where we have tested our star formation and feedback prescription using isolated galaxy models. Here, we extend this work by simulating the formation of a galaxy in its proper cosmological framework, focusing on the ability of the model to form a disc-like structure in rotational support. We find that SN feedback plays a fundamental role in the evolution of the simulated galaxy, efficiently regulating the star-formation activity, pressurizing the gas and generating mass-loaded galactic winds. These processes affect several galactic properties such as final stellar mass, morphology, angular momentum, chemical properties, and final gas and baryon fractions. In particular, we find that our model is able to reproduce extended disc components with high specific angular momentum and a significant fraction of young stars. The galaxies are also found to have significant spheroids composed almost entirely of stars formed at early times. We find that most combinations of the input parameters yield disc-like components, although with different sizes and thicknesses, indicating that the code can form discs without fine-tuning the implemented physics. We also show how our model scales to smaller systems. By analysing simulations of virial masses 109 and 1010 h-1 M⊙, we find that the smaller the galaxy, the stronger the SN feedback effects. © 2008 RAS.

Registro:

Documento: Artículo
Título:Effects of supernova feedback on the formation of galaxy discs
Autor:Scannapieco, C.; Tissera, P.B.; White, S.D.M.; Springel, V.
Filiación:Max-Planck Institute for Astrophysics, Karl-Schwarzchild Str. 1, D85748 Garching, Germany
Instituto de Astronomía y Física Del Espacio, Casilla de Correos 67, Suc. 28, 1428 Buenos Aires, Argentina
Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET, Argentina
Palabras clave:Cosmology: theory; Galaxies: abundances; Galaxies: evolution; Galaxies: formation; Methods: numerical
Año:2008
Volumen:389
Número:3
Página de inicio:1137
Página de fin:1149
DOI: http://dx.doi.org/10.1111/j.1365-2966.2008.13678.x
Título revista:Monthly Notices of the Royal Astronomical Society
Título revista abreviado:Mon. Not. R. Astron. Soc.
ISSN:00358711
CODEN:MNRAA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00358711_v389_n3_p1137_Scannapieco

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Citas:

---------- APA ----------
Scannapieco, C., Tissera, P.B., White, S.D.M. & Springel, V. (2008) . Effects of supernova feedback on the formation of galaxy discs. Monthly Notices of the Royal Astronomical Society, 389(3), 1137-1149.
http://dx.doi.org/10.1111/j.1365-2966.2008.13678.x
---------- CHICAGO ----------
Scannapieco, C., Tissera, P.B., White, S.D.M., Springel, V. "Effects of supernova feedback on the formation of galaxy discs" . Monthly Notices of the Royal Astronomical Society 389, no. 3 (2008) : 1137-1149.
http://dx.doi.org/10.1111/j.1365-2966.2008.13678.x
---------- MLA ----------
Scannapieco, C., Tissera, P.B., White, S.D.M., Springel, V. "Effects of supernova feedback on the formation of galaxy discs" . Monthly Notices of the Royal Astronomical Society, vol. 389, no. 3, 2008, pp. 1137-1149.
http://dx.doi.org/10.1111/j.1365-2966.2008.13678.x
---------- VANCOUVER ----------
Scannapieco, C., Tissera, P.B., White, S.D.M., Springel, V. Effects of supernova feedback on the formation of galaxy discs. Mon. Not. R. Astron. Soc. 2008;389(3):1137-1149.
http://dx.doi.org/10.1111/j.1365-2966.2008.13678.x