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相关论文: Spatial motion of the Magellanic Clouds. Tidal mod…

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The dominant gaseous structure in the Galactic halo is the Magellanic Stream, an extended network of neutral and ionized filaments surrounding the Large and Small Magellanic Clouds (LMC/SMC), the two most massive satellite galaxies of the…

星系天体物理 · 物理学 2020-09-10 Scott Lucchini , Elena D'Onghia , Andrew J Fox , Chad Bustard , Joss Bland-Hawthorn , Ellen Zweibel

The Magellanic Stream might have grown out of tidal interactions at high redshift, when the young galaxies were close together, rather than from later interactions among the Magellanic Clouds and Milky Way. This is illustrated in solutions…

宇宙学与河外天体物理 · 物理学 2015-06-16 P. J. E. Peebles , R. Brent Tully

We predict and compare the distributions and properties of hyper-velocity stars (HVSs) ejected from the centres of the Milky Way (MW) and the Large Magellanic Cloud (LMC). In our model, HVSs are ejected at a constant rate -- equal in both…

星系天体物理 · 物理学 2021-08-18 Fraser A. Evans , Tommaso Marchetti , Elena Maria Rossi , Josephine F. W. Baggen , Sanne Bloot

We performed an extended analysis of the parameter space for the interaction of the Magellanic System with the Milky Way (MW). The varied parameters cover the phase space parameters, the masses, the structure, and the orientation of both…

天体物理学 · 物理学 2009-11-11 A. Ruzicka , J. Palous , Ch. Theis

The time-scales associated with various stages of the star formation process represent major unknowns in our understanding of galactic evolution, as well as of star and planet formation. This is the second paper in a series aiming to…

星系天体物理 · 物理学 2022-09-28 Jacob L. Ward , J. M. Diederik Kruijssen , Mélanie Chevance , Jaeyeon Kim , Steven N. Longmore

Recently obtained kinematic data has shown that the Large Magellanic Cloud (LMC) possesses an old stellar halo. In order to further characterize the properties of this halo, parametric King models are fit to the surface density of RR Lyrae…

天体物理学 · 物理学 2009-11-10 David R. Alves

We model the response of spherical, non-rotating Milky Way (MW) dark matter and stellar halos to the Large Magellanic Cloud (LMC) using the matrix method of linear response theory. Our computations reproduce the main features of the dark…

星系天体物理 · 物理学 2022-07-20 Simon Rozier , Benoit Famaey , Arnaud Siebert , Giacomo Monari , Christophe Pichon , Rodrigo Ibata

We present radial velocities for 2045 stars in the Small Magellanic Cloud (SMC), obtained from the 2dF survey by Evans et al. (2004). The great majority of these stars are of OBA type, tracing the dynamics of the young stellar population.…

天体物理学 · 物理学 2014-11-18 Christopher J. Evans , Ian D. Howarth

Magellanic Cloud Planetary Nebulae (PNs) offer insight of both the population and evolution of low- and intermediate-mass stars, in environments that are free of the distance bias and the differential reddening that hinder the observations…

天体物理学 · 物理学 2007-05-23 Letizia Stanghellini

By fitting the tilt in the path of the Orphan-Chenab Stream (OCS), we conclude that the current mass of the Large Magellanic Cloud (LMC) within 30 kpc is $4.7$-$5.1 \times 10^{10}$ M$_\odot$. We note that the tidal radius of the LMC of this…

星系天体物理 · 物理学 2025-10-02 Hiroka T. Warren , Heidi Jo Newberg , Autumn G. Guffey , JiaZhao Lin , Eric J. Mendelsohn , Kevin Roux

The Magellanic Clouds are a local laboratory for understanding the evolution and properties of dwarf irregular galaxies. To reveal the extended structure and interaction history of the Magellanic Clouds we have undertaken a large-scale…

We derive structural parameters and evidence for extended tidal debris from star count and preliminary standard candle analyses of the Large Magellanic Cloud based on Two Micron All Sky Survey (2MASS) data. The full-sky coverage and low…

天体物理学 · 物理学 2010-01-07 Martin D. Weinberg , Sergei Nikolaev

We report results of proper motions of 15 known Large Magellanic Cloud (LMC) old globular clusters (GCs) derived from the Gaia DR2 data sets. When these mean proper motions are gathered with existent radial velocity measurements to compose…

星系天体物理 · 物理学 2019-01-09 Andrés E. Piatti , Emilio J. Alfaro , Tristan Cantat-Gaudin

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

Analysing all Galaxy and Mass Assembly (GAMA) galaxies within a factor two (+/- 0.3 dex) of the stellar mass of the Milky Way (MW), there is a 11.9% chance that one of these galaxies will have a close companion (within a projected…

As part of a series of papers aimed at understanding the evolution of the Milky Way's Central Molecular Zone (CMZ), we present hydrodynamical simulations of turbulent molecular clouds orbiting in an accurate model of the gravitational…

星系天体物理 · 物理学 2019-04-10 James E. Dale , J. M. Diederik Kruijssen , S. N. Longmore

This paper explores the effect of the LMC on the mass estimates obtained from the timing argument. We show that accounting for the presence of the LMC systematically lowers the Local Group mass ($M_{\rm LG}$) derived from the relative…

星系天体物理 · 物理学 2015-12-02 Jorge Peñarrubia , Facundo A. Gómez , Gurtina Besla , Denis Erkal , Yin-Zhe Ma

We identify and investigate a pre-infall analog of the Large and Small Magellanic Clouds (LMC, SMC) in the HESTIA suite of constrained cosmological simulations. The system, dynamically isolated from the Local Group, evolves over ~6 Gyr and…

星系天体物理 · 物理学 2025-09-27 Robin Chisholm , Elena D'Onghia , Noam Libeskind , Scott Lucchini , Andrew J. Fox , Matthias Steinmetz

We investigate the non-adiabatic effect of time-dependent deformations in the Milky Way (MW) halo potential on stellar streams. Specifically, we consider the MW's response to the infall of the Large Magellanic Cloud (LMC) and how this…

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