The hidden giant: discovery of an enormous Galactic dwarf satellite in Gaia DR2

Torrealba, G.; Belokurov, Vasily; E. Koposov, S.; S Li, T; G. Walker, Matthew; L. Sanders, Jason; Geringer-Sameth, Alex; B. Zucker, D.; Kuehn, K.; W. Evans, N.; Dehnen, Walter

doi:10.1093/mnras/stz1624

Public

The hidden giant: discovery of an enormous Galactic dwarf satellite in Gaia DR2

Published in Monthly Notices of the Royal Astronomical Society • Jun 11, 2019

Authors:

G. Torrealba

Vasily Belokurov

S. E. Koposov

Abstract

ABSTRACT We report the discovery of a Milky Way satellite in the constellation of Antlia. The Antlia 2 dwarf galaxy is located behind the Galactic disc at a latitude of b ∼ 11° and spans 1.26°, which corresponds to ∼2.9 kpc at its distance of 130 kpc. While similar in spatial extent to the Large Mag...

Subject

Physics

Astrophysics

Dwarf galaxy

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