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Lithium abundances along the RGB: FLAMES-GIRAFFE spectra of a large sample of low-mass Bulge stars
Thomas Lebzelter, Stefan Uttenthaler, Maurizio Busso +2
Context: A small number of K-type giants on the red giant branch (RGB) is known to be very rich in lithium (Li). This fact is not accounted for by standard stellar evolution theory…
Recent star formation in the inner Galactic Bulge seen by ISOGAL II -- The Central Molecular Zone
K. Immer, F. Schuller, A. Omont +1
We present 5--38 m spectroscopic observations of a sample of 68 ISOGAL sources with unknown natures, taken with the Spitzer Infrared Spectrograph. Based on the characteristics a…
The Milky Way stellar populations in CFHTLS fields
Mélanie Guittet, Misha Haywood, Mathias Schultheis
We investigate the characteristics of the thick disk in the Canada - France - Hawaii - Telescope Legacy Survey (CFHTLS) fields, complemented at bright magnitudes with Sloan Digital…
Stellar populations in the Milky Way bulge region : Towards solving the Galactic bulge and bar shapes using 2MASS data
Annie C. Robin, Douglas J. Marshall, Mathias Schultheis +1
We re-analyse photometric near-infrared data in order to investigate why it is so hard to get a consensus for the shape and density law of the bulge, as seen from the literature. T…
The metallicity distribution of bulge clump giants in Baade's Window
V. Hill, A. Lecureur, A. Gomez +8
We seek to constrain the formation of the Galactic bulge by means of analysing the detailed chemical composition of a large sample of red clump stars in Baade's window. We measure…
Massive Young Stellar Objects in the Galactic Center. I. Spectroscopic Identification from Spitzer/IRS Observations
Deokkeun An, Solange V. Ramírez, Kris Sellgren +7
We present results from our spectroscopic study, using the Infrared Spectrograph (IRS) onboard the Spitzer Space Telescope, designed to identify massive young stellar objects (YSOs…