Status: Bibliographieeintrag
Standort: ---
Exemplare:
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| Online-Ressource |
Verfasst von: | Ceverino, Daniel [VerfasserIn]  |
Titel: | Formation and settling of a disc galaxy during the last 8 billion years in a cosmological simulation |
Verf.angabe: | Daniel Ceverino, Joel Primack, Avishai Dekel, Susan A. Kassin |
Fussnoten: | Gesehen am 23.10.2017 |
Titel Quelle: | Enthalten in: De.arxiv.org |
Jahr Quelle: | 2017 |
Band/Heft Quelle: | (2017) Artikel-Nummer 1611.08311, 10 Seiten |
Abstract: | We present results of a high-resolution zoom cosmological simulation of the evolution of a low-mass galaxy with a maximum velocity of V=100 km/s at z=0, using the initial conditions from the AGORA project (Kim et al. 2014). The final disc-dominated galaxy is consistent with local disc scaling relations, such as the stellar-to-halo mass relation and the baryonic Tully-Fisher. The galaxy evolves from a compact, dispersion-dominated galaxy into a rotation-dominated but dynamically hot disc in about 0.5 Gyr (from z=1.4 to z=1.2). The disc dynamically cools down for the following 7 Gyr, as the gas velocity dispersion decreases over time, in agreement with observations. The primary cause of this slow evolution of velocity dispersion in this low-mass galaxy is stellar feedback. It is related to the decline in gas fraction, and to the associated gravitational disk instability, as the disc slowly settles from a global Toomre Q>1 turbulent disc to a marginally unstable disc (Q=1). |
URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Kostenfrei: Verlag: http://arxiv.org/abs/1608.02114 |
Datenträger: | Online-Ressource |
Sprache: | eng |
K10plus-PPN: | 1564646025 |
Verknüpfungen: | → Sammelwerk |
Formation and settling of a disc galaxy during the last 8 billion years in a cosmological simulation / Ceverino, Daniel [VerfasserIn] (Online-Ressource)
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