Artículo

Artale, M.C.; Pedrosa, S.E.; Tissera, P.B.; Cataldi, P.; Di Cintio, A."Dark matter response to galaxy assembly history" (2019) Astronomy and Astrophysics. 622
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Abstract:

Aims. It is well known that the presence of baryons affects the dark matter host haloes. Exploring the galaxy assembly history together with the dark matter haloes properties through time can provide a way to measure these effects. Methods. We have studied the properties of four Milky Way mass dark matter haloes from the Aquarius project during their assembly history, between z = 0 - 4. In this work, we used a published SPH run and the dark matter only counterpart as case studies. To asses the robustness of our findings, we compared them with one of the haloes run using a moving-mesh technique and different sub-grid scheme. Results. Our results show that the cosmic evolution of the dark matter halo profiles depends on the assembly history of the baryons. We find that the dark matter profiles do not significantly change with time, hence they become stable, when the fraction of baryons accumulated in the central regions reaches 80 per cent of its present mass within the virial radius. Furthermore, the mass accretion history shows that the haloes that assembled earlier are those that contain a larger amount of baryonic mass aforetime, which in turn allows the dark matter halo profiles to reach a stable configuration earlier. For the SPH haloes, we find that the specific angular momentum of the dark matter particles within the five per cent of the virial radius at z = 0, remains approximately constant from the time at which 60 per cent of the stellar mass is gathered. We have explored different theoretical and empirical models for the contraction of the haloes through redshift. A model to better describe the contraction of the haloes through redshift evolution must depend on the stellar mass content in the inner regions. © ESO 2019.

Registro:

Documento: Artículo
Título:Dark matter response to galaxy assembly history
Autor:Artale, M.C.; Pedrosa, S.E.; Tissera, P.B.; Cataldi, P.; Di Cintio, A.
Filiación:Institut für Astro- und Teilchenphysik, Universität Innsbruck, Technikerstrasse 25/8, Innsbruck, 6020, Austria
CONICET-Universidad de Buenos Aires, Instituto de Astronomíay Física Del Espacio (IAFE), CC 67, Suc. 28, Buenos Aires, 1428, Argentina
Departamento de Ciencias Físicas, Universidad Andres Bello, Av. Republica 220, Santiago, Chile
Instituto de Física de Buenos Aires, IFIBA, UBA CONICET Pabellon 1, Ciudad Universitaria, Buenos Aires, 1428, Argentina
Instituto de Astrofísica de Canarias, Calle Via Lactea, La Laguna, Tenerife, Spain
University of la Laguna, Avda. Astrofísico Fco. Sánchez, La Laguna, Tenerife, Spain
Palabras clave:Galaxies: halos; Galaxy: evolution; Galaxy: formation; Dark Matter; Hadrons; Hydrodynamics; Red Shift; Stars; Dark matter halos; Dark matter particles; Empirical model; Galaxies: halos; Galaxy: evolution; Galaxy: formation; Moving mesh techniques; Stellar mass; Galaxies
Año:2019
Volumen:622
DOI: http://dx.doi.org/10.1051/0004-6361/201834096
Handle:http://hdl.handle.net/20.500.12110/paper_00046361_v622_n_p_Artale
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_v622_n_p_Artale

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Citas:

---------- APA ----------
Artale, M.C., Pedrosa, S.E., Tissera, P.B., Cataldi, P. & Di Cintio, A. (2019) . Dark matter response to galaxy assembly history. Astronomy and Astrophysics, 622.
http://dx.doi.org/10.1051/0004-6361/201834096
---------- CHICAGO ----------
Artale, M.C., Pedrosa, S.E., Tissera, P.B., Cataldi, P., Di Cintio, A. "Dark matter response to galaxy assembly history" . Astronomy and Astrophysics 622 (2019).
http://dx.doi.org/10.1051/0004-6361/201834096
---------- MLA ----------
Artale, M.C., Pedrosa, S.E., Tissera, P.B., Cataldi, P., Di Cintio, A. "Dark matter response to galaxy assembly history" . Astronomy and Astrophysics, vol. 622, 2019.
http://dx.doi.org/10.1051/0004-6361/201834096
---------- VANCOUVER ----------
Artale, M.C., Pedrosa, S.E., Tissera, P.B., Cataldi, P., Di Cintio, A. Dark matter response to galaxy assembly history. Astron. Astrophys. 2019;622.
http://dx.doi.org/10.1051/0004-6361/201834096