ICATE 21876
INSTITUTO DE CIENCIAS ASTRONOMICAS, DE LA TIERRA Y DEL ESPACIO
Unidad Ejecutora - UE
artículos
Título:
Galaxy interactions in SDSS-DR7: Major and minor mergers
Autor/es:
VALERIA MESA; SOL ALONSO; DIEGO G. LAMBAS & ANA L. O'MILL
Revista:
Boletín de la Asociación Argentina de Astronomía
Editorial:
Asociación Argentina de Astronomía
Referencias:
Lugar: Buenos Aires; Año: 2011 vol. 54
ISSN:
1669-9521
Resumen:
We study galaxy pair samples selected from the Sloan Digital Sky Survey (SDSS-DR7) and we perform an analysis of minor and major mergers with the aim of investigating the dependence of galaxy properties on interactions. We build a galaxy pair catalog requiring rp < 25 kpc/h and DeltaV < 350 km/s within redshift z<0.1.By visual inspection of SDSS images we removed false identifications and we classify the interactions into three categories: pairs undergoing merging, M; pairs with evident tidal features, T; and non disturbed, N.We also divide the pair sample into minor and major interactions according to the luminosity ratio of the galaxy members. We conclude that the characteristics of the interactions and the ratio of luminosity galaxy pair members involved in a merger are important parameters in setting galaxy properties.
