From astrobites: “Snake (on a Plane) in the Clouds”

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Title: Snake in the Clouds: A new nearby dwarf galaxy in the Magellanic bridge
Authors: Sergey E. Koposov, Matthew G. Walker, Vasily Belokurov, Andrew R. Casey, Alex Geringer-Sameth, Dougal Mackey, Gary Da Costa, Denis Erkal, Prashin Jethwa, Mario Mateo, Edward W. Olszewski, John I. Bailey III
First Author’s Institutions: McWilliams Center for Cosmology, Carnegie Mellon University, Pittsburgh, PA, USA; Institute for Astronomy, University of Cambridge, UK

Status: Submitted to MNRAS [open access on arXiv]

The Magellanic Clouds are two prominent splotches of light visible in the sky of the Southern Hemisphere.

Small Magellanic Cloud. NASA/ESA Hubble and ESO/Digitized Sky Survey 2

Large Magellanic Cloud. Adrian Pingstone December 2003

Magellanic Bridge ESA_Gaia satellite. Image credit V. Belokurov D. Erkal A. Mellinger.

Named for their relative sizes, the Large Magellanic Cloud (LMC) and the Small Magellanic Cloud (SMC) are two dwarf galaxies, satellites of the Milky Way which are believed to have been pulled into the domain of our galaxy some several billion years ago. During this accretion event, gravitational interactions flung a wide field of debris from the Clouds. While studying the Magellanic Bridge between the two Clouds, the authors of today’s paper found another piece of the puzzle: an intriguing little dwarf galaxy occupying the bridge of debris. Dubbed Hydrus I after the constellation of sky it occupies, a preliminary investigation of this ultra-faint dwarf galaxy (UFD) is the focus of today’s paper.

See the full article here .

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