Browsing by Author "Villanova, S."

Now showing items 1-5 of 5

    • The Araucaria Project: High-precision orbital parallax and masses of the eclipsing binary TZ Fornacis 
      Gallenne, A.; Pietrzynski, G.; Graczyk, D.; Konorski, P.; Kervella, Pierre; Merand, A.; Gieren, W.; Anderson, R.; Villanova, S. (EDP SCIENCES, 2016)
      Context. Independent distance estimates are particularly useful to check the precision of other distance indicators, while accurate and precise masses are necessary to constrain evolution models. Aims. The goal is to ...
    • The metallicity of the open cluster Tombaugh 2* 
      Villanova, S.; Randich, S.; Geisler, D.; Carraro, Giovanni; Costa Hechenleitner, Edgardo (ESO, 2010)
      Context. Open clusters are excellent tracers of the structure, kinematics, and chemical evolution of the disk and a wealth of information can be derived from the spectra of their constituent stars. Aims. We investigate ...
    • NGC 2401: a template of the young population of the Norma-Cygnus arm in the Third Galactic Quadrant 
      Baume, Gustavo; Moitinho, A.; Vázquez, Rúben A.; Solivella, G.; Carraro, Giovanni; Villanova, S. (BLACKWELL PUBLISHING, 2006-04-21)
      Based on a deep optical CCD [UBV(RI)(C)] photometric survey and on the Two-Micron All Sky Survey (2MASS) data, we derived the main parameters of the open cluster NGC 2401. We found that this cluster is placed at 6.3 +/- ...
    • Observational templates of star cluster disruption - The stellar group NGC 1901 in front of the Large ... 
      Carraro, Giovanni; Fuente, Marcos R. de la; Villanova, S.; Bidin, C. Moni; Fuente, Marcos C. de la; Baumgardt, H.; Solivella, G. (2007)
      Context. Observations indicate that present-day star formation in the Milky Way disk takes place in stellar ensembles or clusters rather than in isolation. Bound, long-lived stellar groups are known as open clusters. They ...
    • The old open cluster NGC 2112: updated estimates of fundamental parameters based on a membership analysis 
      Carraro, Giovanni; Villanova, S.; Demarque, Pierre; Moni Bidin, Christian; McSwain, M. Virginia (BLACKWELL, 2008-05-21)
      We report on a new, wide-field (20 x 20 arcmin(2)), multicolour (U BV I), photometric campaign in the area of the nearby old open cluster NGC 2112. At the same time, we provide medium-resolution spectroscopy of 35 (and ...