A short scale length for the α-enhanced thick disk of the Milky Way: Evidence from low-latitude SEGUE data

Cheng, Judy YRockosi, ConstanceMorrison, HeatherLee, Young SunBeers, Timothy CBizyaev, DmitryHarding, PaulMalanushenko, ElenaMalanushenko, ViktorOravetz, DanielSchlesinger, Katharine2015-12-130004-637Xhttp://hdl.handle.net/1885/78107We examine the α-element abundance ratio, [α/Fe], of 5620 stars, observed by the Sloan Extension for Galactic Understanding and Exploration survey in the region 6kpc<R < 16kpc, 0.15kpc<|Z| < 1.5kpc, as a function of Galactocentric radius R and distanceA short scale length for the α-enhanced thick disk of the Milky Way: Evidence from low-latitude SEGUE data201210.1088/0004-637X/752/1/512015-12-11