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Related papers: A Magellanic Origin of the DES Dwarfs

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We address the presently exciting issue of the presence of stellar clusters in the periphery of the Magellanic Clouds (MCs) and beyond by making use of a wealth of wide-field high-quality images released in advance from the Magellanic…

Astrophysics of Galaxies · Physics 2017-01-18 Andrés E. Piatti

The Magellanic Cloud system represents a unique laboratory for study of both interacting dwarf galaxies and the ongoing process of the formation of the Milky Way and its halo. We focus on one aspect of this complex, 3 body interaction - the…

A variety of observational campaigns seek to test dark-matter models by measuring dark-matter subhaloes at low masses. Despite their predicted lack of stars, these subhaloes may be detectable through gravitational lensing or via their…

Astrophysics of Galaxies · Physics 2023-07-20 Megan Barry , Andrew Wetzel , Sierra Chapman , Jenna Samuel , Robyn Sanderson , Arpit Arora

We present the final results of the Exploration of Local VolumE Satellites (ELVES) Survey, a survey of the dwarf satellites of a nearly volume-limited sample of Milky Way (MW)-like hosts in the Local Volume. Hosts are selected simply via a…

Astrophysics of Galaxies · Physics 2022-07-20 Scott G. Carlsten , Jenny E. Greene , Rachael L. Beaton , Shany Danieli , Johnny P. Greco

We compare spherically-averaged radial number counts of bright (> 10^5 Lsun) dwarf satellite galaxies within 400 kpc of the Milky Way (MW) and M31 and find that the MW satellites are much more centrally concentrated. Remarkably, the two…

Astrophysics of Galaxies · Physics 2014-03-05 Basilio Yniguez , Shea Garrison-Kimmel , Michael Boylan-Kolchin , James S. Bullock

A wealth of tiny galaxies populates the surroundings of the Milky Way. Some of these objects might have their origin as former satellites of the Large Magellanic Cloud. Examples of the importance of understanding how many systems are…

Astrophysics of Galaxies · Physics 2019-03-20 T. K. Fritz , R. Carrera , G. Battaglia , S. Taibi

We explore the connection between galaxies and dark matter halos in the Milky Way (MW) and quantify the implications on properties of the dark matter particle and the phenomenology of low-mass galaxy formation. This is done through a…

Astrophysics of Galaxies · Physics 2018-02-07 Prashin Jethwa , Denis Erkal , Vasily Belokurov

We provide new constraints on the dark matter halo density profile of Milky Way (MW) dwarf spheroidal galaxies (dSphs) using the phase-space distribution function (DF) method. After assessing the systematics of the approach against mock…

Astrophysics of Galaxies · Physics 2024-05-31 Kevin E. Andrade , Manoj Kaplinghat , Mauro Valli

We present a new observation of satellite galaxies around seven Milky Way (MW)-like galaxies located outside of the Local Group (LG) using Subaru/Hyper Suprime-Cam imaging data to statistically address the missing satellite problem. We…

Astrophysics of Galaxies · Physics 2022-09-07 Masashi Nashimoto , Masayuki Tanaka , Masashi Chiba , Kohei Hayashi , Yutaka Komiyama , Takashi Okamoto

We show that a Magellanic Cloud origin for the warp of the Milky Way can explain most quantitative features of the outer HI layer recently identified by Levine, Blitz & Heiles (2005). We construct a model similar to that of Weinberg (1998)…

Astrophysics · Physics 2009-11-11 Martin D. Weinberg , Leo Blitz

The highly-substructured outskirts of the Magellanic Clouds provide ideal locations for studying the complex interaction history between both Clouds and the Milky Way (MW). In this paper, we investigate the origin of a >20$^\circ$ long…

Astrophysics of Galaxies · Physics 2021-12-15 L. R. Cullinane , A. D. Mackey , G. S. Da Costa , D. Erkal , S. E. Koposov , V. Belokurov

The vast majority of the mass in the Milky Way (MW) is in dark matter (DM); we therefore cannot directly observe the MW mass distribution, and have to use tracer populations in order to infer properties of the MW DM halo. However, MW halo…

In HST Cycles 11 and 13 we obtained two epochs of ACS/HRC data for fields in the Magellanic Clouds centered on background quasars. We used these data to determine the proper motions of the LMC and SMC to better than 5% and 15% respectively.…

The Large and Small Magellanic Clouds (LMC, SMC) are nearby dwarf galaxies whose proximity uniquely enables molecular cloud-scale resolution observations across the entire Magellanic system, a capability unmatched in any other external…

Recent observations on structural properties of the Large Magellanic Cloud (LMC) based on the Deep Near-Infrared Southern Sky Survey (DENIS) and Two Micron All-Sky Survey (2MASS) have revealed that the LMC has an off-center bar even in the…

Astrophysics · Physics 2009-11-13 Kenji Bekki

Dwarf galaxies provide a unique opportunity for studying the evolution of the Milky Way (MW) and the Local Group as a whole. Analysing the running solar apex based on the kinematics of the MW satellites, we discovered an unexpected…

Astrophysics of Galaxies · Physics 2023-03-29 Dmitry Makarov , Sergey Khoperskov , Danila Makarov , Lidia Makarova , Noam Libeskind , Jean-Baptiste Salomon

We suggest a new component of the Milky Way galaxy that can account for both the optical depth and the event durations obtained by the MACHO microlensing survey toward the Large Magellanic Cloud. This component is consistent with recent…

Astrophysics · Physics 2007-05-23 Evalyn I. Gates , Geza Gyuk

The Magellanic Clouds are nearby dwarf irregular galaxies whose morphologies show different properties when traced by different stellar populations, making them an important laboratory for studying galaxy morphologies. We study the…

We examine the prevalence, longevity, and causes of planes of satellite dwarf galaxies, as observed in the Local Group. We use 14 Milky Way/Andromeda-(MW/M31) mass host galaxies from the FIRE-2 simulations. We select the 14 most massive…