Formación de estructura a gran escala: alineamiento de galaxias pares con filamentos cósmicos

MESA V.; DUPLANCIC, F.; ALONSO, S.; MUÑOZ JOFRE, R.; GARCIA LAMBAS, D.

Malargüe, Mendoza

Congreso; 60° Reunión Anual de la Asociación Argentina de Astronomía; 2017

Asociación Argentina de Astronomía

This paper presents a sample of galaxy pairs, obtained from the Sloan Digital Sky Survey (SDSS), with projected separation r p < 100 h −1 kpc and relative radial velocity ∆V < 500 km s −1 , within z < 0.1.The sample were divided taking into account the morphologies of the galaxy members of the pair systems, using the classification of the Galaxy Zoo project. Three types of galaxy pairs were obtained: pairs elliptical-elliptical (E-E), elliptical-spiral (E-S) and spiral-spiral(S-S). Using a catalog of filaments, this paper provides a study of the relative orientation of the axis of union between the galaxies in pair systems with respect to the filament to which they belong. In addition, we analized the general properties of the filaments inhabited by our galaxies.