A Dynamical Study of the Formation of Peculiar Galaxies

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

RESUMEN. Un estudlo de la formaci6n de diferentes tipos de galaxias peculiares (interactuantes) es conducido en base de la dina'mioa de la colisi6n lievando a su formaci6n usando la aproximaci6n impulsiva. Los resultados indican la existencia de una relaci6n caracteristica en base del camblo de la energia interna durante la colisi6n, cual determina el tipo de la galaxia peculiar formado. La relacion es analisada y valores criticos del camblo de Ia energia interna, ilevando a la interacci6n entre galaxias de varias intensidades y la formaci6n consecuente de varios tipos de sistemas peculiares es discutido. ABSTRACT. A study of the formation of different types of peculiar (interacting) galaxies is conducted based on the dynamics of the collision leading to their formation, using the impulsive approximation. Results indicate the existance of a characteristic relationship, based on the internal energy changes during the collision, governing the type of peculiar galaxy formed. The relationship is analysed and critical values of internal energy changes, leading to galaxy interaction of varying intensities and consequent formation of different types of peculiar galaxies is discussed. Key words: GALAXIES-DYNAMICS -- GALAXIES-FORMATION

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