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Some studies have suggested an abrupt drop-off of the stellar density of the disk at Galactocentric distances $R\\gtrsim 15$ kpc, which means that in practice no disk stars or only very few of them should be found beyond this limit. However, stars in the Milky Way plane are detected at larger distances. In addition to the halo component, star counts have placed the end of the disk beyond 20 kpc, although this has not been spectroscopically confirmed so far.\n  AIMS. 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Allende Prieto, C. Liu, F. Garzon, H. Wang, L. Deng, M. Lopez-Corredoira","submitted_at":"2018-04-09T15:46:57Z","abstract_excerpt":"CONTEXT. The maximum size of the Galactic stellar disk is not yet known. Some studies have suggested an abrupt drop-off of the stellar density of the disk at Galactocentric distances $R\\gtrsim 15$ kpc, which means that in practice no disk stars or only very few of them should be found beyond this limit. However, stars in the Milky Way plane are detected at larger distances. In addition to the halo component, star counts have placed the end of the disk beyond 20 kpc, although this has not been spectroscopically confirmed so far.\n  AIMS. 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