Wylie de Boer, Elizabeth; Freeman, Kenneth; Williams, Mary; Steinmetz, Matthias; Munari, U; Keller, Stefan
We present an abundance analysis of six member stars of the recently discovered Aquarius stream, in an attempt to ascertain whether this halo stream is real and, if so, to understand its origin. The mean metallicities of the six stars have a dispersion of only 0.10 dex, indicating that they are part of a chemically coherent structure. We then investigate whether the stream represents the debris of a disrupted dwarf galaxy or a disrupted globular cluster. The [Ni/Fe]-[Na/Fe] plane provides a...[Show more]
Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.