Groups of Galaxies in the Las Campanas Redshift Survey
| dc.creator | Tucker, D. L. | |
| dc.creator | Hashimoto, Y. | |
| dc.creator | Kirshner, R. P. | |
| dc.creator | Landy, S. D. | |
| dc.creator | Lin, H. | |
| dc.creator | Oemler, A. | |
| dc.creator | Schechter, P. L. | |
| dc.creator | Shectman, S. A. | |
| dc.date | 1997-11-15 | |
| dc.date.accessioned | 2026-07-07T02:25:07Z | |
| dc.date.available | 2026-07-07T02:25:07Z | |
| dc.description | A "friends-of-friends" percolation algorithm has been used to extract a catalogue of drho/rho = 80 density enhancements (groups) from the six slices of the Las Campanas Redshift Survey (LCRS). The full catalogue contains 1495 groups and includes 35% of the LCRS galaxy sample. A statistical sample of 394 groups has been derived by culling groups from the full sample which either are too close to a slice edge, have a crossing time greater than a Hubble time, have a corrected velocity dispersion of zero or less, or contain a 55 arcsec "orphan" (a galaxy with a "faked" redshift excluded from the original LCRS redshift catalogue due to its proximity --- i.e., within 55 arcsec --- of another galaxy). Median properties derived from the statistical sample include: line-of-sight velocity dispersion sigma_los = 164 km/s, crossing time t_cr = 0.10/H_0, harmonic radius R_h = 0.58/h Mpc, pairwise separation R_p = 0.64/h Mpc, virial mass M_vir = (1.90x10^13)/h M_sun, total group R-band luminosity L_tot = (1.40x10^11)/h^2 L_sun, and R-band mass-to-light ratio M/L = 153h M_sun/L_sun. | |
| dc.description | 11 pages, LaTeX. A poster paper which appeared at the the 12th Potsdam Cosmology Workshop, "Large Scale Structure: Tracks and Traces". A 2-page writeup of the poster will appear in the conference proceedings and is presently available at http://manaslu.astro.utoronto.ca:80/~lin/ConfProc/ConfProc.html and at http://www.aip.de:8080/~tucker/ConfProc/ConfProc.html | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9711176 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9711176 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/11806 | |
| dc.subject | Astrophysics | |
| dc.title | Groups of Galaxies in the Las Campanas Redshift Survey | |
| dc.type | text |