SIMBAD references

2004MNRAS.348..866E - Mon. Not. R. Astron. Soc., 348, 866-878 (2004/March-1)

Galaxy groups in the 2dFGRS: the group-finding algorithm and the 2PIGG catalogue.

EKE V.R., BAUGH C.M., COLE S., FRENK C.S., NORBERG P., PEACOCK J.A., BALDRY I.K., BLAND-HAWTHORN J., BRIDGES T., CANNON R., COLLESS M., COLLINS C., COUCH W., DALTON G., DE PROPRIS R., DRIVER S.P., EFSTATHIOU G., ELLIS R.S., GLAZEBROOK K., JACKSON C., LAHAV O., LEWIS I., LUMSDEN S., MADDOX S., MADGWICK D., PETERSON B.A., SUTHERLAND W. and TAYLOR K.

Abstract (from CDS):

The construction of a catalogue of galaxy groups from the Two-degree Field Galaxy Redshift Survey (2dFGRS) is described. Groups are identified by means of a friends-of-friends percolation algorithm which has been thoroughly tested on mock versions of the 2dFGRS generated from cosmological N -body simulations. The tests suggest that the algorithm groups all galaxies that it should be grouping, with an additional 40 per cent of interlopers. About 55 per cent of the ∼190 000 galaxies considered are placed into groups containing at least two members of which ∼29 000 are found. Of these, ∼7000 contain at least four galaxies, and these groups have a median redshift of 0.11 and a median velocity dispersion of 260 km/s. This 2dFGRS Percolation-Inferred Galaxy Group (2PIGG) catalogue represents the largest available homogeneous sample of galaxy groups. It is publicly available on the World Wide Web.

Abstract Copyright: 2004 RAS

Journal keyword(s): catalogues - galaxies: clusters: general

VizieR on-line data: <Available at CDS (J/MNRAS/348/866): 2dfngpga.dat 2dfsgpga.dat 2dfngpgr.dat 2dfsgpgr.dat mocngpga.dat mocsgpga.dat mocngpgr.dat mocsgpgr.dat>

Nomenclature: 2PIGG wNNNNN (Nos n1-n11920, s1-s16957).

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 0

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