English

Globular Clusters Lost by the Sagittarius Dwarf Spheroidal Galaxy

Astrophysics of Galaxies 2021-05-21 v1

Abstract

In this work a search was carried out for globular clusters belonging to the Sagittarius (Sgr) tidal stream using the analysis of spatial positions, radial velocities relative to the Galactic Standard of Rest (V_{GSR}),proper motions and ratio of "age -- metallicity" ([Fe/H]) for globular clusters and for stars in the tidal stream. As a result, three categories of globular clusters were obtained: A -- most certainly in the stream: Terzan 8, Whiting 1, Arp 2, NGC 6715, Terzan 7, Pal 12; B -- kinematic outliers: Pal 5, NGC 5904, NGC 5024, NGC 5053, NGC 5272, NGC 288; C -- lowest rank candidates: NGC 6864, NGC 5466, NGC 5897, NGC 7492, NGC 4147.

Keywords

Cite

@article{arxiv.2105.09850,
  title  = {Globular Clusters Lost by the Sagittarius Dwarf Spheroidal Galaxy},
  author = {N. R. Arakelyan and S. V. Pilipenko and M. E. Sharina},
  journal= {arXiv preprint arXiv:2105.09850},
  year   = {2021}
}
R2 v1 2026-06-24T02:18:34.034Z