NOAO >   Observing Info >   Approved Programs >   2014A-0143

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Proposal Information for 2014A-0143


PI: Andrea Kunder, Leibniz Insitute of Astrophysics, amkunder@gmail.com
Address: Milky Way Structure, An der Sternwarte 16, Potsdam 14482, Germany

CoI: Roberto De Propris, Finnish Center for Astronomy with ESO
CoI: R. Michael Rich, UCLA
CoI: Andreas Koch, Heidelberg University
CoI: Christian I. Johnson, Harvard Smithsonian Center for Astrophysics

Title: Characterization of Stellar Sub-Structure in the Galactic Bulge

Abstract: We have discovered a group of 7 bulge giants with radial velocities of +300 km/s in a two degree field toward the Galactic bulge at (l,b)=(-6,-8). They are separated from the highest velocity bulge members by ~100 km/s. Recently, ARGOS reported a group of 4 kinematically distinct metal-poor bulge stars in their bulge fields at l=-20. Coincidentally, these stars have radial velocities of +300 km/sec. Given the scarcity of stars with velocities of +300 km/s in the bulge, these stellar features are likely related and part of a large independent stream or moving group in the inner Galaxy. We propose to search for connecting stars that link these two features and trace the extent of this newly discovered stream and understand their stellar system of origin, via their chemical composition.


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NOAO >   Observing Info >   Approved Programs >   2014A-0143

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