La densidad de galaxias en el entorno de galaxias huésped de Gamma-Ray Burst'

BORNANCINI CARLOS G.; MARTÍNEZ HÉCTOR J.; GARCÍA LAMBAS DIEGO; LE FLOC´H EMERIC; MIRABEL FÉLIX I.; MINNITI DANTE

San Juan, Argentina

Congreso; Reunión de la Asociación Argentina de Astronomía; 2004

Asociación Argentina de Astronomía

We analyze cross-correlation functions between gamma-ray burst (GRB) hosts and surrounding galaxies. We have used data obtained with the Very Large Telescope at Cerro Paranal (Chile), as well as public Hubble Space Telescope data. Our results indicate that GRB host galaxies do not reside in high galaxy density environments. Moreover, the host galaxy-galaxy cross-correlations show a relatively low amplitude. Our results are in agreement with the cross-correlation function between star forming galaxies and surrounding objects in the Hubble Deep Field-North (HDF-N).