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@Article{NascimentoRiTrCaPlDu:2016:DyAnCl,
               author = "Nascimento, R. S. and Ribeiro, A. L. B. and Trevisan, Marina and 
                         Carrasco, E. R. and Plana, H. and Dupke, R.",
          affiliation = "{Universidade Federal do Rio de Janeiro (UFRJ)} and {Universidade 
                         Estadual Santa Cruz (UESC)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and {Gemini Observatory} and {Universidade 
                         Estadual Santa Cruz (UESC)} and {Observatorio Nacional (ON)}",
                title = "Dynamical analysis of the cluster pair: A3407+A3408",
              journal = "Monthly Notices of the Royal Astronomical Society",
                 year = "2016",
               volume = "460",
               number = "2",
                pages = "2193--2206",
                month = "Aug.",
             keywords = "galaxies: clusters: general, galaxies: clusters: intracluster 
                         medium, galaxies: evolution, galaxies: statistics.",
             abstract = "We carried out a dynamical study of the galaxy cluster pair A3407 
                         and A3408 based on a spectroscopic survey obtained with the 4 
                         metre Blanco telescope at the Cerro Tololo Interamerican 
                         Observatory, plus 6dF data, and ROSAT All-Sky Survey. The sample 
                         consists of 122 member galaxies brighter than m(R) = 20. Our main 
                         goal is to probe the galaxy dynamics in this field and verify if 
                         the sample constitutes a single galaxy system or corresponds to an 
                         ongoing merging process. Statistical tests were applied to 
                         clusters members showing that both the composite system A3407 + 
                         A3408 as well as each individual cluster have Gaussian velocity 
                         distribution. A velocity gradient of similar to 847 +/- A 114 km 
                         s(- 1) was identified around the principal axis of the projected 
                         distribution of galaxies, indicating that the global field may be 
                         rotating. Applying the kmm algorithm to the distribution of 
                         galaxies, we found that the solution with two clusters is better 
                         than the single unit solution at the 99 per cent cl. This is 
                         consistent with the X-ray distribution around this field, which 
                         shows no common X-ray halo involving A3407 and A3408. We also 
                         estimated virial masses and applied a two-body model to probe the 
                         dynamics of the pair. The more likely scenario is that in which 
                         the pair is gravitationally bound and probably experiences a 
                         collapse phase, with the cluster cores crossing in less than 
                         similar to 1 h(-1) Gyr, a pre-merger scenario. The complex X-ray 
                         morphology, the gas temperature, and some signs of galaxy 
                         evolution in A3408 suggest a post-merger scenario, with cores 
                         having crossed each other similar to 1.65 h(-1) Gyr ago, as an 
                         alternative solution.",
                  doi = "10.1093/mnras/stw1114",
                  url = "http://dx.doi.org/10.1093/mnras/stw1114",
                 issn = "0035-8711 and 1365-2966",
             language = "en",
           targetfile = "nascimento_dynamical.pdf",
        urlaccessdate = "05 dez. 2020"
}


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