Cidade Universitária

Sep 13, 2024 | academic.oup.com | Instituto de Astronomia |Cidade Universitária

Fossil groups have been seen as possible examples of the final stage of evolution of galaxy groups. Not long after Ponman et al. (1994) studied RX J1340.6+4018, it was proposed that they may be the final stage of evolution of a compact group of galaxies and that those galaxies that were close to the centre of the system could have merged in a single elliptical galaxy. Jones et al.

Aug 30, 2024 | link.aps.org | Instituto de Física |Cidade Universitária |Campus Ondina

In this work we present a calculation of exotic charmonium production in ultraperipheral collisions, in which the exotic state is explicitly treated as a meson molecule. Our formalism is general, but we focus on the lightest possible exotic charmonium state: a D+D− molecular bound state. It was proposed some time ago, and it has been an object of experimental searches. Here we study the production of the open charm pair in the process γγ→D+D−.

Jul 18, 2024 | onlinelibrary.wiley.com | Departamento de Ecología |Instituto de Biologia |Cidade Universitária |Bruno B. Althoff

REFERENCES , & (1983). Handbook of tropical aquarium fishes (p. 718). T.F.H. Publications. , , , , , & (2018). Effect of flood pulses on the trophic ecology of four piscivorous fishes from the eastern Amazon. Journal of Fish Biology, 93(1), 30–39. , , & (2008). Life-history of the south American darter, Characidium pterostictum (Chrenuchidae): Evidence for small scale spatial variation in a piedmont stream. Neotropical Ichthyology, 6, 591–598. , , , , & (2015).

Jul 4, 2024 | hispanismo.cervantes.es | Cidade Universitária

Convocante:  Tipo de convocatoria:  Contribuciones (call for papers) Materias de especialidad:  Descripción:  Se invita a todas las personas interesadas a mandar sus propuestas de comunicación. La fecha límite de envío de propuestas es el 11 de agosto de 2024.

Dec 19, 2023 | academic.oup.com | Departamento de Astronomía |Instituto de Astronomia |Cidade Universitária |Av. Shishima Hifumi

This paper presents a method for finding ram-pressure stripped (RPS) galaxy candidates by performing a morphological analysis of galaxy images obtained from the Legacy survey. We consider a sample of about 600 galaxies located in different environments such as groups and clusters, tidally interacting pairs and the field. The sample includes 160 RPS previously classified in the literature into classes from J1 to J5, based on the increasing level of disturbances.