Artículo de revista
Whiting 1: Confirmation of its accretion by the Milky Way
Fecha
2017Registro en:
EPJ Web of Conferences, Volumen 152, 152:04006 · January 2017
2100014X
21016275
10.1051/epjconf/201715204006
Autor
Carballo Bello, Julio
Corral Santana, Jesús M.
Martínez Delgado, David
Sollima, Antonio
Muñoz Vidal, Ricardo Rodrigo
Duffau, Sonia
Catelán, Márcio
Institución
Resumen
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.