Groups of Galaxies in the Las Campanas Survey Slice at delta =-6deg

Details Groups of Galaxies in the Las Campanas Survey Slice at delta =-6deg Groups of Galaxies in the Las Campanas Survey Slice at delta =-6deg

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aas...183.7108t&link_type=abstract

American Astronomical Society, 183rd AAS Meeting, #71.08; Bulletin of the American Astronomical Society, Vol. 25, p.1399

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Scientific paper

The Las Campanas Deep Redshift Survey (LCDRS) is an attempt to survey a sufficiently large volume of the universe in order to determine the scale of the largest structures, and thereby obtain a fair sample of the three-dimensional galaxy distribution in the nearby universe. Presented are results from a group catalogue derived by means of a "friends-of-friends" percolation algorithm for the LCDRS slice at delta = -6deg . Groups in this catalogue are defined to be delta rho /rho = 80 number density enhancements above the global mean; roughly 23% of LCDRS -6deg Slice galaxies are group members. The median line-of-sight velocity dispersion for the LCDRS groups is sigma_ {los} = 177 km s({-) 1}; the median mass-to-light ratio is M/L = 182h M_&sun;/L_&sun; in the R-band ( ~ 200h M_&sun;/L_&sun; in the de Vaucouleurs B(0)-band). LCDRS group properties are compared with those of other group catalogues.

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