Browsing by Author "Sollima, Antonio"

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    Tails and streams around the galactic globular clusters NGC1851, NGC1904, NGC2298 and NGC2808
    (2018) Carballo Bello, Julio A.; Martínez Delgado, David; Navarrete Silva, Camila Andrea; Catelan, Márcio; Muñoz, Ricardo R.; Antoja, Teresa; Sollima, Antonio
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    Whiting 1: Confirmation of its accretion by the Milky Way
    (2017) Carballo-Bello, Julio A.; Corral-Santana, Jesús M.; Martínez-Delgado, David; Sollima, Antonio; Muñoz, Ricardo R.; Duffau, Sonia; Catelan, Marcio
    We investigate the association of Whiting 1 with the Sagittarius tidal stream by obtaining radial velocities for a sample of 101 stars observed with VIMOS. Our results reveal the presence of a component of the Sagittarius tidal stream with a radial velocity - and distance - compatible with that of the globular cluster. Therefore, we conclude that Whiting1 was formed in the interior of the Sagittarius dwarf spheroidal galaxy and later accreted by the Milky Way. In addition, our data also reveal the detection for the first time of an ancient wrap of the Sagittarius tidal stream along the same line-of-sight and at the same heliocentric distance....