Bibcode
Nidever, David L.; Allende-Prieto, C.; Bizyaev, D.; Frinchaboy, P. M.; Garcia Perez, A. E.; Holtzman, J.; Majewski, S. R.; Schiavon, R.; Skrutskie, M. F.; Zasowski, G.
Referencia bibliográfica
American Astronomical Society, AAS Meeting #219, #410.06
Fecha de publicación:
1
2012
Número de citas
0
Número de citas referidas
0
Descripción
The SDSS-III Apache Point Observatory Galactic Evolution Experiment
(APOGEE) will obtain high resolution (R 22,500) and high S/N ( 100 per
pixel) H-band spectra of 100,000 giant stars in the Milky Way disk,
bulge and halo to study the chemical and kinematical evolution of the
Milky Way Galaxy. APOGEE will be able to probe deep into regions of our
galaxy that were previously hidden by a thick veil of dust. I will
present first APOGEE results on the Galactic bulge kinematics using
commissioning data in 18 fields. Our reduction pipeline currently
delivers radial velocites with accuracies of 0.2 km/s for the majority
of our target stars. These RVs are used to derive accurate rotation
curves and velocity dispersion profiles for our bulge fields, many of
them in regions not previously probed. We compare our results to other
surveys and to N-body models and confirm that the bulge is dominated by
a bar to large longitudes. We also find the first evidence for
kinematical substructure in our bulge fields.