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Related papers: A Magellanic Origin of the DES Dwarfs

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We infer the local stellar-to-halo/subhalo mass relations (MRs) for central and satellite galaxies separately. We constraint this relations by using several combinations of observational data, consisting of the total galaxy stellar mass…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 A. Rodriguez-Puebla , V. Avila-Reese , N. Drory

The long term time evolution of tidal dwarf satellite galaxies with two different initial densities orbiting a host galaxy that resembles the Milky Way has been studied using a large set of Newtonian N-Body simulations. From the simulations…

Astrophysics of Galaxies · Physics 2016-02-11 R. A. Casas , V. Arias , K. Pena Ramírez , P. Kroupa

We investigate how the Large Magellanic Cloud (LMC) impacts the predicted signals in near-future direct detection experiments for non-standard dark matter (DM) interactions, using the Auriga cosmological simulations. We extract the local DM…

High Energy Physics - Phenomenology · Physics 2024-09-17 Javier Reynoso-Cordova , Nassim Bozorgnia , Marie-Cécile Piro

Semi-analytic modeling furnishes an efficient avenue for characterizing the properties of dark matter halos associated with satellites of Milky Way-like systems, as it easily accounts for uncertainties arising from halo-to-halo variance,…

Astrophysics of Galaxies · Physics 2025-10-06 Dylan Folsom , Oren Slone , Mariangela Lisanti , Fangzhou Jiang , Manoj Kaplinghat

How has the ``fluffy'' core of the Sgr dwarf galaxy survived multiple strong shocks from the tidal force of the Galactic halo and disc since the formation of the core a Hubble time ago? A scenario that Sgr was deflected to its current orbit…

Astrophysics · Physics 2009-10-30 HongSheng Zhao

The first infall of the LMC into the Milky Way (MW) represents a large and recent disruption to the MW circumgalactic medium (CGM). In this work, we use idealized, hydrodynamical simulations of a MW-like CGM embedded in a live dark matter…

The Small Magellanic Cloud (SMC), a satellite galaxy of the Milky Way, is an irregular dwarf galaxy exhibiting evidence of recent and ongoing star formation. We performed a spatial clustering analysis of far-ultraviolet stars in the SMC…

Astrophysics of Galaxies · Physics 2025-06-11 Sipra Hota , Richard de Grijs , Annapurni Subramaniam

Based on the results of N-body simulations on the last 2.5 Gyr evolution of the Large and Small Magellanic Clouds (LMC and SMC, respectively) interacting with the Galaxy, we firstly show when and where the leading arms (LAs) of the…

Astrophysics · Physics 2015-05-13 Kenji Bekki

Recently, Kallivayalil et al. derived new values of the proper motion for the Large and Small Magellanic Clouds (LMC and SMC, respectively). The spatial velocities of both Clouds are unexpectedly higher than their previous values resulting…

Astrophysics · Physics 2009-11-13 Adam Ruzicka , Christian Theis , Jan Palous

The Large and Small Magellanic Clouds (LMC and SMC) are the Milky Way's nearest interacting galaxy pair, offering a unique laboratory for studying tidal effects on galactic disks. Despite extensive survey efforts, the three-dimensional…

We present a new, probabilistic method for determining the systemic proper motions of Milky Way (MW) ultra-faint satellites in the Dark Energy Survey (DES). We utilize the superb photometry from the first public data release (DR1) of DES to…

Astrophysics of Galaxies · Physics 2019-04-24 Andrew B. Pace , Ting S. Li

The stellar halo of the Milky Way records the history of its interactions with dwarf galaxies, whose subsequent destruction results in the formation of an extended stellar component. Recent works have suggested that galaxies with masses…

Astrophysics of Galaxies · Physics 2023-05-10 Sownak Bose , Alis J. Deason

I present a new analysis of the MACHO Project 5.7 year Large Magellanic Cloud (LMC) microlensing data set that incorporates the effects of contamination of the microlensing event sample by variable stars. Photometric monitoring of MACHO LMC…

Astrophysics · Physics 2009-11-10 David P. Bennett

Stellar streams are excellent probes of the underlying gravitational potential in which they evolve. In this work, we fit dynamical models to five streams in the Southern Galactic hemisphere, combining observations from the Southern Stellar…

The 3D observed velocities of the Large and Small Magellanic Clouds(LMC and SMC) provide an opportunity to probe the Galactic potential in the outskirt of the Galactic halo. Based on a canonical NFW model of the Galactic potential, Besla et…

Astrophysics of Galaxies · Physics 2015-06-11 Xiaojia Zhang , Douglas N. C. Lin , Andreas Burkert , Ludwig Oser

We present deep optical photometry from the DECam imager on the 4m Blanco telescope of over 12 deg$^2$ around the Carina dwarf spheroidal, with complete coverage out to 1 degree and partial coverage extending out to 2.6 degrees. Using a…

We use a volume-limited spectroscopic sample of isolated galaxies in the Sloan Digital Sky Survey (SDSS) to investigate the frequency and radial distribution of luminous (M_r <~ -18.3) satellites like the Large Magellanic Cloud (LMC) around…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Erik J. Tollerud , Michael Boylan-Kolchin , Elizabeth J. Barton , James S. Bullock , Christopher Q. Trinh

I review recent results from gravitational microlensing surveys of the Large Magellanic Cloud. The combined microlensing optical depth of the MACHO and EROS-1 surveys is tau_LMC = 2.1{+1.3/-0.8}* 10^{-7} which is substantially larger than…

Astrophysics · Physics 2009-10-30 David Bennett

We present a new analysis of the Aquarius simulations done in combination with a semi-analytic galaxy formation model. Our goal is to establish whether the subhalos present in LCDM simulations of Milky Way-like systems could host the dwarf…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 Carlos A. Vera-Ciro , Amina Helmi , Else Starkenburg , Maarten A. Breddels

The analysis of the orbits of 47 dwarf satellite galaxies of the Milky Way, built using three models of the Galactic gravitational potential with different masses, is presented. The models of the Galactic potential were chosen based on the…

Astrophysics of Galaxies · Physics 2021-03-10 A. T. Bajkova , V. V. Bobylev