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Three dimensional interstellar extinction map towards the Galactic Bulge
B. Q. Chen, M. Schultheis, B. W. Jiang +4
Studies of the properties of the inner Galactic Bulge depend strongly on the assumptions about the interstellar extinction. Most of the extinction maps available in the literature…
Population gradients and photometric metallicities in early- and transition-type dwarf galaxies: Clues from the Sculptor group
S. Lianou, E. Grebel, G. S. Da Costa +3
We focus on the resolved stellar populations of one early- and four transition-type dwarf galaxies in the Sculptor group, with the aim to examine the potential presence of populati…
Milky Way demographics with the VVV survey. I. The 84-million star colour-magnitude diagram of the Galactic bulge
R. K. Saito, D. Minniti, B. Dias +9
The Milky Way (MW) bulge is a fundamental Galactic component for understanding the formation and evolution of galaxies, in particular our own. The ESO Public Survey VISTA Variables…
Integrated J- and H-band spectra of globular clusters in the LMC: implications for stellar population models and galaxy age dating
Mariya Lyubenova, Harald Kuntschner, Marina Rejkuba +3
(Abridged) The rest-frame near-IR spectra of intermediate age (1-2 Gyr) stellar populations are dominated by carbon based absorption features offering a wealth of information. Yet,…
A wide-area view of the Phoenix dwarf galaxy from VLT/FORS imaging
Giuseppina Battaglia, Marina Rejkuba, Eline Tolstoy +2
We present results from a wide-area photometric survey of the Phoenix dwarf galaxy, one of the rare dwarf irregular/ dwarf spheroidal transition type galaxies (dTs) of the Local Gr…
C and N abundances of MS and SGB stars in NGC 1851
C. Lardo, A. P. Milone, A. F. Marino +6
We present the first chemical analysis of stars on the double subgiant branch (SGB) of the globular cluster NGC 1851. We obtained 48 Magellan IMACS spectra of subgiants and fainter…