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The GALAH Survey: No Chemical Evidence of an Extragalactic Origin for the Nyx Stream

Zucker, Daniel; Simpson, Jeffrey D; Martell, Sarah; Lewis, Geraint Francis; Casey, Andrew; Ting, Yuan-Sen; Horner, Jonathan; Nordlander, Thomas; Wyse, Rosemary F G; Zwitter, T; Bland-Hawthorn, Joss; Buder, Sven; Asplund, Martin; Freeman, Kenneth; Lin, Jane; Schlesinger, Katharine


The results from the ESA Gaia astrometric mission and deep photometric surveys have revolutionized our knowledge of the Milky Way. There are many ongoing efforts to search these data for stellar substructure to find evidence of individual accretion events that built up the Milky Way and its halo. One of these newly identified features, called Nyx, was announced as an accreted stellar stream traveling in the plane of the disk. Using a combination of elemental abundances and stellar parameters...[Show more]

CollectionsANU Research Publications
Date published: 2021
Type: Journal article
Source: Astrophysical Journal Letters
DOI: 10.3847/2041-8213/abf7cd
Access Rights: Open Access


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