@Article{CarvalhoRiStRoCoMo:2017:InReGa,
               author = "Carvalho, Reinaldo Ramos de and Ribeiro, A. L. B. and Stalder 
                         Diaz, Diego Herbin and Rosa, Reinaldo Roberto and Costa, A. P. and 
                         Moura, Tatiana Coelho de",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and 
                         {Universidade Estadual Santa Cruz} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and {Universidade Estadual Santa Cruz} and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Investigating the relation between galaxy properties and the 
                         gaussianity of the velocity distribution of groups and clusters",
              journal = "The Astronomical Journal",
                 year = "2017",
               volume = "154",
               number = "3",
                month = "Sept.",
             keywords = "evolution, galaxies: clusters: general, galaxies: formation, 
                         galaxies: groups: general.",
             abstract = "We investigate the dependence of stellar population properties of 
                         galaxies on group dynamical stage for a subsample of the Yang 
                         catalog. We classify groups according to their galaxy velocity 
                         distribution into Gaussian (G) and Non-Gaussian (NG). Using two 
                         totally independent approaches, we have shown that our measurement 
                         of Gaussianity is robust and reliable. Our sample covers Yang's 
                         groups in the redshift range 0.03 <= z <= 0.1, with mass >= 
                         10(14)M(circle dot). The new method, called Hellinger Distance, to 
                         determine whether a group has a velocity distribution Gaussian or 
                         NG is very effective in distinguishing between the two families. 
                         NG groups present halo masses higher than the G ones, confirming 
                         previous findings. Examining the skewness and kurtosis of the 
                         velocity distribution of G and NG groups, we find that faint 
                         galaxies in NG groups are mainly infalling, for the first time, 
                         into the groups. We show that considering only faint galaxies in 
                         the outskirts; those in NG groups are older and more metal-rich 
                         than those in G groups. Also, examining the Projected Phase Space 
                         of cluster galaxies, we see that bright and faint galactic systems 
                         in G groups are in dynamical equilibrium-which does not seem to be 
                         the case in NG groups. These findings suggest that NG systems have 
                         a higher infall rate, assembling more galaxies that have 
                         experienced preprocessing before entering the group.",
                  doi = "10.3847/1538-3881/aa7f2b",
                  url = "http://dx.doi.org/10.3847/1538-3881/aa7f2b",
                 issn = "0004-6256",
             language = "en",
           targetfile = "carvalho_investigating.pdf",
        urlaccessdate = "27 abr. 2024"
}