Browsing Exact and Earth Sciences by Author "Valentini, Marica"

Now showing items 1-4 of 4

    • Chrono-chemodynamical analysis of the globular cluster NGC 6355 : looking for the fundamental bricks of the Bulge 

      Souza, Stefano O.; Ernandes, Heitor; Valentini, Marica; Barbuy, Beatriz; Chiappini, C.C.M.; Pérez Villegas, Maria de Los Angeles; Ortolani, Sergio; Friaça, Amâncio César Santos; Queiroz, Anna Bárbara de Andrade; Bica, Eduardo Luiz Damiani (2023) [Journal article]
      The information on Galactic assembly time is imprinted on the chemodynamics of globular clusters. This makes them important probes that help us to understand the formation and evolution of the Milky Way. Discerning between ...

    • Photo-chemo-dynamical analysis and the origin of the bulge globular cluster Palomar 6 

      Souza, Stefano O.; Valentini, Marica; Barbuy, Beatriz; Pérez Villegas, Maria de Los Angeles; Chiappini, C.C.M.; Ortolani, Sergio; Nardiello, Domenico; Dias, Bruno Moreira de Souza; Anders, Friedrich; Bica, Eduardo Luiz Damiani (2021) [Journal article]
      Context. Palomar 6 (Pal6) is a moderately metal-poor globular cluster projected towards the Galactic bulge. A full analysis of the cluster can give hints on the early chemical enrichment of the Galaxy and a plausible origin ...

    • StarHorse results for spectroscopic surveys and Gaia DR3 : chrono-chemical populations in the solar vicinity, the genuine thick disk, and young alpha-rich stars 

      Queiroz, Anna Bárbara de Andrade; Anders, Friedrich; Chiappini, C.C.M.; Barbuy, Beatriz; Khalatyan, Arman V.; Santiago, Basilio Xavier; Nepal, Samir; Steinmetz, M.; Gallart, Carme; Valentini, Marica; Dal Ponte, Marina; Barbuy, Beatriz; Pérez Villegas, Maria de Los Angeles; Masseron, Thomas; Fernández-Trincado, José Gregorio; Khoperskov, Sergey A.; Minchev, Ivan; Fernández Alvar, Emma; Lane, Richard R.; Nitschelm, Christian (2023) [Journal article]
      The Gaia mission has provided an invaluable wealth of astrometric data for more than a billion stars in our Galaxy. The synergy between Gaia astrometry, photometry, and spectroscopic surveys gives us comprehensive information ...

    • Young (α/Fe)-enhanced stars discovered by CoRoT and APOGEE : what is their origin? 

      Chiappini, C.C.M.; Anders, Friedrich; Rodrigues, Thaise da Silva; Miglio, Andrea; Montalbán, Josefina; Mosser, Benoît; Girardi, Leo Alberto; Valentini, Marica; Noels, Arlette; Morel , Thierry; Minchev, Ivan; Steinmetz, M.; Santiago, Basilio Xavier; Schultheis, Mathias; Martig, Marie; Costa, Luiz N. da; Maia, Marcio Antonio Geimba; Allende Prieto, Carlos; Assis Peralta, R. de; Hekker, Saskia; Themeßl, Nathalie; Kallinger, Thomas; Garcia, Rafael A.; Mathur, Savita; Baudin, Frederic; Beers, T.C.; Cunha, Katia; Harding, Paul; Holtzman, J.A.; Majewski, Steven Raymond; Mészáros, S.; Nidever, D.L.; Pan, K.; Schiavon, Ricardo P.; Shetrone, M.; Schneider, D.P.; Stassun, Keivan G. (2015) [Journal article]
      We report the discovery of a group of apparently young CoRoT red-giant stars exhibiting enhanced [ /Fe] abundance ratios (as determined from APOGEE spectra) with respect to solar values. Their existence is not explained ...