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相关论文: Magellanic satellites in $\Lambda$CDM cosmological…

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We use cosmological simulations from the Aquarius Project to study the orbital history of the Large Magellanic Cloud (LMC) and its potential association with other satellites of the Milky Way (MW). We search for dynamical analogs to the LMC…

星系天体物理 · 物理学 2015-05-28 Laura V. Sales , Julio F. Navarro , Andrew P. Cooper , Simon D. M. White , Carlos S. Frenk , Amina Helmi

We examine Milky Way-Magellanic Cloud systems selected from the Millennium-II Simulation in order to place the orbits of the Magellanic Clouds in a cosmological context. Our analysis shows that satellites massive enough to be LMC analogs…

星系天体物理 · 物理学 2011-06-09 Michael Boylan-Kolchin , Gurtina Besla , Lars Hernquist

The Large and Small Magellanic Cloud (LMC and SMC) form the closest interacting galactic system to the Milky Way, therewith providing a laboratory to test cosmological models in the local Universe. We quantify the likelihood for the…

星系天体物理 · 物理学 2024-10-02 Moritz Haslbauer , Indranil Banik , Pavel Kroupa , Hongsheng Zhao , Elena Asencio

Observational work have shown that the two brightest satellite galaxies of the Milky Way (MW), the Large Magellanic Cloud (LMC) and the Small Magellanic Cloud (SMC), are rare amongst MW analogues. It is then interesting to know whether the…

星系天体物理 · 物理学 2019-05-21 Dali Zhang , Yu Luo , Xi Kang

Previous studies showed that an estimate of the likelihood distribution of the Milky Way halo mass can be derived using the properties of the satellites similar to the Large and Small Magellanic Clouds (LMC and SMC). However, it would be…

宇宙学与河外天体物理 · 物理学 2015-06-12 Roberto E. Gonzalez , Andrey V. Kravtsov , Nickolay Y. Gnedin

Recent discovery of many dwarf satellite galaxies in the direction of the Small and Large Magellanic Clouds (SMC and LMC) provokes questions of their origins, and what they can reveal about galaxy evolution theory. Here, we predict the…

星系天体物理 · 物理学 2017-09-20 Gregory A. Dooley , Annika H. G. Peter , Jeffrey L. Carlin , Anna Frebel , Keith Bechtol , Beth Willman

The Milky Way (MW) and M31 both harbor massive satellite galaxies, the Large Magellanic Cloud (LMC) and M33, which may comprise up to 10 per cent of their host's total mass. Massive satellites can change the orbital barycentre of the…

星系天体物理 · 物理学 2016-12-07 Ekta Patel , Gurtina Besla , Tony Sohn

We use the Auriga cosmological simulations of Milky Way (MW)-mass galaxies and their surroundings to study the satellite populations of dwarf galaxies in $\Lambda$CDM. As expected from prior work, the number of satellites above a fixed…

We present a study illustrating the effects of the passage of a Large Magellanic Cloud (LMC) mass satellite on the distance and velocity distributions of satellites in $\Lambda+$Cold Dark Matter simulations of Milky Way (MW) sized halos. In…

星系天体物理 · 物理学 2024-06-24 Andrey Kravtsov , Sophia Winney

The Large and Small Magellanic Clouds (LMC/SMC) are the closest major satellite galaxies of the Milky Way. They are likely on their first passage on an infalling orbit towards our Galaxy (Besla et al. 2007) and trace the ongoing dynamics of…

The Large and Small Magellanic Clouds (LMC and SMC, respectively) are the largest satellite galaxies of the Milky Way (MW) and their interactions with each other have given rise to multiple stellar substructures in their periphery as well…

星系天体物理 · 物理学 2026-02-06 Bethany Garver , David Nidever , Victor Debattista , Nathan Deg

The hierarchical nature of LCDM suggests that the Magellanic Clouds must have been surrounded by a number of satellites before their infall into the Milky Way. Many of those satellites should still be in close proximity to the Clouds, but…

星系天体物理 · 物理学 2016-12-21 Laura V. Sales , Julio F. Navarro , Nitya Kallivayalil , Carlos S. Frenk

Space observatories like the Hubble Space Telescope and Gaia are providing unprecedented 6D phase space information of satellite galaxies. Such measurements can shed light on the structure and assembly history of the Local Group, but…

星系天体物理 · 物理学 2017-05-03 Ekta Patel , Gurtina Besla , Kaisey Mandel

Understanding the physical mechanism behind the formation of a co-rotating thin plane of satellite galaxies, like the one observed around the Milky Way (MW), has been challenging. The perturbations induced by a massive satellite galaxy,…

Satellite galaxies are predicted to generate gravitational density wakes as they orbit within the dark matter (DM) halos of their hosts, causing their orbits to decay over time. The recent infall of the Milky Way's (MW) most massive…

The ongoing interaction between the Milky Way (MW) and its largest satellite - the Large Magellanic Cloud (LMC) - creates a significant perturbation in the distribution and kinematics of distant halo stars, globular clusters and satellite…

星系天体物理 · 物理学 2022-02-25 Lilia Correa Magnus , Eugene Vasiliev

We establish the connection between the Magellanic Clouds (MCs) and the dwarf galaxy candidates discovered in the Dark Energy Survey (DES) by building a dynamical model of the MC satellite populations, based on an extensive suite of…

星系天体物理 · 物理学 2016-06-15 Prashin Jethwa , Denis Erkal , Vasily Belokurov

The infall of the Large Magellanic Cloud (LMC) into the Milky Way (MW) has displaced the MW's centre of mass, manifesting as an observed reflex motion in the velocities of outer halo stars. We use a Simulation Based Inference framework to…

High accuracy proper motions (PMs) of M31 and other Local Group satellites have now been provided by the {\it Gaia} satellite. We revisit the Timing Argument to compute the total mass $M$ of the Local Group from the orbit of the Milky Way…

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