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A First Constraint on the Thick Disk Scale Length: Differential Radial Abundances in K Giants at Galactocentric Radii 4, 8, and 12 kpc

Bensby, T; Alves-Brito, A; Oey, M. S.; Yong, David; Melendez, Jorge


Based on high-resolution spectra obtained with the MIKE spectrograph on the Magellan telescopes, we present detailed elemental abundances for 20 red giant stars in the outer Galactic disk, located at Galactocentric distances between 9 and 13kpc. The outer disk sample is complemented with samples of red giants from the inner Galactic disk and the solar neighborhood, analyzed using identical methods. For Galactocentric distances beyond 10kpc, we only find chemical patterns associated with the...[Show more]

CollectionsANU Research Publications
Date published: 2011
Type: Journal article
Source: Astrophysical Journal, The
DOI: 10.1088/2041-8205/735/2/L46
Access Rights: Open Access


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