Compact Group Catalogue in 2MASS

M. C. PACHECO; M. E. DÍAZ-GIMÉNEZ

Córdoba

Encuentro; Friend of Friend meeting; 2011

IATE

We present a catalog of compact groups automatically extracted from the 2MASS extended dource catalog. Following the criteria defined by Hickson (1982), we find 329 Compact Groups. After a visual inspection, we find out that only 295 groups contitute our final catalog, due to some galaxy miss-identification in the parent catalog. Finally, we found 175 previouly known Compact Groups while the remaining (83%) represent a brand nex sample. From these Compact Groups, 172 have all their members with redshifts available in the literature, however only 97 of these groups (56%) have four or more accordant galaxies. This is the largest velocity filtered sample available at present and constitute the baseline to our statistical studies of Compact Groups.