Disk stars in the Milky Way detected beyond 25 kpc from its center M. López-Corredoira, C. Allende Prieto, F. Garzón, H. Wang, C. Liu and L. Deng A&A, 612 (2018) L8 Published online: 07 May 2018 DOI: 10.1051/0004-6361/201832880