Mostrando ítems 1-10 de 129
Magnetic fields in close white dwarf binaries
(Universidad de Valparaíso, 2020-09)
White dwarfs are the degenerate remnants of stars that are born with initial masses 8 − 10 Mο (e.g., Smartt et al. 2009 [63], Cummings et al.2019 [16]). Whereas the possibility that some of these stellar remnants possess ...
Milho consorciado com guandu-anão em diferentes arranjos de plantas em sistema orgânico
(Universidade Federal de São CarlosUFSCarPrograma de Pós-Graduação em Agroecologia e Desenvolvimento Rural - PPGADR-ArCâmpus Araras, 2016-02-25)
The corn is among the crops produced more in intercropping systems, mainly due to its architecture and ecophysiology. The objective of the study was to evaluate the growth, productivity and nutritional status of maize in ...
The origin of brown dwarfs
(Universidad de Valparaíso, 2019-09)
In the present thesis we study the problem of the formation of brown dwarfs, objects whose masses are in the range between planets and stars. There are four main for- mation theories for these substellar objects: turbulent ...
Star formation of ultra-faint dwarf spheroidal galaxies: formation of dwarf spheroidal galaxies = Formación estelar de galaxias enanas esferoidales ultra débiles: formación de galaxias enanas esferoidales.
(Universidad de Concepción, Facultad de Ciencias Físicas y Matemáticas, Departamento de Astronomía., 2020)
La galaxias enanas esferoidales descubiertas antes del 2005 presentan magnitudes absolutas
mayores a Mv = −8.7 y luminosidades mayores a 2.5×105 L¯. Sus radios de Pummer son & 200 pc,
a excepción de las galaxias Sextans ...