After the conquest of the peninsula (25–20 BCE), Augustus divided it into the southwestern Hispania Baetica and the western Hispania Lusitania, the latter including the territories of the Celtic tribes known as the Astures (in Asturia) and the Gallaeci (in Gallaecia). In 27 BCE, the Emperor Augustus made a smaller division of the province: Asturia and Gallaecia were ceded to the jurisdiction of the new province Tarraconensis, the former remained as Provincia Lusitania et Vettones. The Roman province of Lusitania comprised what is now central and south Portugal and parts of north-central Spain.