The celestial reference frame Gaia-CRF2.
a , b , CMDs of the area sampled with the parallel WFC3 observations beyond the tidal radius of Liller1, illustrating the distribution of Galactic field stars in the vicinity of the cluster.
This indicates that its progenitor was probably one of the giant structures that are thought to generate bulges through coalescence.
Nature 462 , 483 486 2009.
also acknowledges financial support from the Dirección de Investigación y Desarrollo de la Universidad de La Serena through the Programa de Incentivo a la Investigación de Académicos PIA-DIDULS.
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