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Blue Straggler Stars in Galactic Open Clusters and the effect of field star contamination
G. Carraro, R. A. Vazquez, A. Moitinho
We investigate the distribution of Blue Straggler stars in the field of three open star clusters. The main purpose is to highlight the crucial role played by general Galactic disk…
Milli-arcsecond astrophysics with VSI, the VLTI spectro-imager in the ELT era
F. Malbet, D. Buscher, G. Weigelt +49
Nowadays, compact sources like surfaces of nearby stars, circumstellar environments of stars from early stages to the most evolved ones and surroundings of active galactic nuclei c…
Stellar populations in the Canis Major over-density
Giovanni Carraro, Andre' Moitinho, Ruben A. Vazquez
We performed a photometric multicolor survey of the core of the Canis Major over-density at l 244, -8.0, reaching V = 22 and covering 0.3 x 1 degree. The main aim is to unravel the…
Spiral structure in the outer Galactic disk. I. The Third Galactic Quadrant
Ruben A. Vazquez, Jorge May, Giovanni Carraro +3
We combine optical and radio observations to trace the spiral structure in the Third Quadrant of the Milky Way. The optical observations consist of a large sample of young open clu…
Photometry of a Galactic field at l = 232, b = -6. The old open cluster Auner 1, the Norma-Cygnus spiral arm and the signature of the warped Galactic Thick Disk
Giovanni Carraro, Andre' Moitinho, Manuela Zoccali +2
We perform a detailed photometric study of the stellar populations in a Galactic Field at l = 232, b = -6 in the Canis Major (CMa) constellation. We present the first U,B,V,I photo…
On the difference between nuclear and contraction ages
W. Lyra, A. Moitinho, N. van der Bliek +1
Context:Ages derived from the low mass stars still contracting onto the main sequence often differ from ages derived from the high mass ones that have already evolved away from it.…