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Related papers: The Orbits and Total Mass of the Magellanic Clouds

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Recent proper motion measurements of the Large and Small Magellanic Clouds (LMC and SMC, respectively) by Kallivayalil et al (2006a,b) suggest that the 3D velocities of the Clouds are substantially higher (~100 km/s) than previously…

We have determined the proper motion (PM) of the Large Magellanic Cloud (LMC) relative to four background quasi-stellar objects, combining data from two previous studies made by our group, and new observations carried out in four epochs not…

Astrophysics · Physics 2008-11-26 Mario H. Pedreros , Edgardo Costa , Rene A. Mendez

In recent years, with new ground-based and HST measurements of proper motions of the Magellanic Clouds being published, a need of a reanalysis of possible orbital history has arisen. As complementary to other studies, we present a partial…

Astrophysics of Galaxies · Physics 2015-06-03 Katerina Bartoskova , Bruno Jungwiert , Adam Ruzicka , Edgardo Costa

The HST proper motion (PM) measurements of the Clouds have severe implications for their interaction history with the Milky Way (MW) and with each other. The Clouds are likely on their first passage about the MW and the SMC's orbit about…

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…

Astrophysics of Galaxies · Physics 2011-06-09 Michael Boylan-Kolchin , Gurtina Besla , Lars Hernquist

Recent observational and theoretical studies on the three-dimensional (3D) space motions of the Large and the Small Magellanic Clouds (LMC and SMC, respectively) have strongly suggested that the latest proper motion measurements of the…

Astrophysics · Physics 2009-11-13 Kenji Bekki

We review the recent theoretical and observational developments concerning the interaction of the Large Magellanic Cloud (LMC) with the Milky Way and its neighbourhood. An emerging picture is that the LMC is a fairly massive companion…

Astrophysics of Galaxies · Physics 2023-04-19 Eugene Vasiliev

Important problems to which we would like to find answers are: What are the distances to the Large Magellanic Cloud (LMC) and the Small Magellanic Cloud (SMC)? What is the present distribution of stars, gas and dark matter in the Clouds,…

Astrophysics · Physics 2016-08-30 Sidney van den Bergh

We propose a scenario in which the Large Magellanic Cloud (LMC) is on its second passage around the Milky Way. Using a series of tailored N-body simulations, we demonstrate that such orbits are consistent with current observational…

Astrophysics of Galaxies · Physics 2023-11-03 Eugene Vasiliev

Recent high precision proper motions from the Hubble Space Telescope (HST) suggest that the Large and Small Magellanic Clouds (LMC and SMC, respectively) are either on their first passage or on an eccentric long period (>6 Gyr) orbit about…

Astrophysics of Galaxies · Physics 2015-05-19 Gurtina Besla , Nitya Kallivayalil , Lars Hernquist , Roeland P. van der Marel , T. J. Cox , Dusan Keres

We examine the implications of recent measurements of the Milky Way rotation for the trajectory of the Large Magellanic Cloud. The ~ 14+/-6% increase in the MW circular velocity relative to the IAU standard of 220 km/s changes the…

Astrophysics · Physics 2009-11-13 Genevieve Shattow , Abraham Loeb

The Large Magellanic Cloud is the most massive satellite galaxy of the Milky Way, with an estimated mass exceeding a tenth of the mass of the Milky Way. Just past its closest approach of about 50 kpc, and flying by the Milky Way at an…

Astrophysics of Galaxies · Physics 2020-11-24 Michael S. Petersen , Jorge Peñarrubia

The history of the Magellanic Clouds is investigated using N-body hydrodynamic simulations where the initial conditions are set by a genetic algorithm. This technique allows us to identify possible orbits for the Magellanic Clouds around…

Astrophysics of Galaxies · Physics 2015-06-22 Magda Guglielmo , Geraint F. Lewis , Joss Bland-Hawthorn

We review our understanding of the kinematics of the LMC and the SMC, and their orbit around the Milky Way. The line-of-sight velocity fields of both the LMC and SMC have been mapped with high accuracy using thousands of discrete traces, as…

Astrophysics · Physics 2009-11-13 Roeland P. van der Marel , Nitya Kallivayalil , Gurtina Besla

We present a new measurement of the mass of the Milky Way (MW) based on observed properties of its largest satellite galaxies, the Magellanic Clouds (MCs), and an assumed prior of a {\Lambda}CDM universe. The large, high-resolution Bolshoi…

Astrophysics of Galaxies · Physics 2015-05-20 Michael T. Busha , Philip J. Marshall , Risa H. Wechsler , Anatoly Klypin , Joel Primack

Motivated by recent studies suggesting that the Large Magellanic Cloud (LMC) could be significantly more massive than previously thought, we explore whether the approximation of an inertial Galactocentric reference frame is still valid in…

Astrophysics of Galaxies · Physics 2016-08-08 Facundo A. Gómez , Gurtina Besla , Daniel D. Carpintero , Álvaro Villalobos , Brian W. O'Shea , Eric F. Bell

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…

Astrophysics of Galaxies · Physics 2016-12-07 Ekta Patel , Gurtina Besla , Tony Sohn

We present proper motions for the Large & Small Magellanic Clouds (LMC & SMC) based on three epochs of \textit{Hubble Space Telescope} data, spanning a $\sim 7$ yr baseline, and centered on fields with background QSOs. The first two epochs,…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 Nitya Kallivayalil , Roeland P. van der Marel , Gurtina Besla , Jay Anderson , Charles Alcock

We estimate the mass of the Large Magellanic Cloud (LMC) using the kinematics of 30 LMC globular clusters (GCs). We combine proper motions (PMs) measured with HST, Gaia, or a combination of the two, from a recent study by Bennet et al.…

Astrophysics of Galaxies · Physics 2024-01-29 Laura L. Watkins , Roeland P. van der Marel , Paul Bennet

We use a distribution function analysis to estimate the mass of the Milky Way out to 100 kpc using a large sample of halo stars. These stars are compiled from the literature, and the vast majority (~98%) have 6D phase-space information. We…

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