The survey has been extracted from the COSMOS/APM digitized plates, with an automatic algorithm,
employing the following criteria:
Richness: n ≥ 4, where n is the number of galaxies within 3 mag of the brightest group member;
Isolation: Risol ≥ 3 Rgr, where Risol is the distance from the center of the circle to the nearest
nonmember galaxy within 0.5 mag of the faintest group member
Compactness: μgr < μlimit, where μgr is the mean surface brightness (mag/arcsec2)
within the circle of radius Rgr and μlimit = 27.6 in bj band
Magnitude of the brightest galaxy: bj ≤ 15.0
This has resulted in 121 candidate compact groups over 5200 sq. degrees, of which 49 have the brightest galaxy with a magnitude bj ≤ 14.5, also identified as the brightest groups subsample.
Redshift information has been obtained for all the groups in the sample, resulting in xx confirmed candidates. The brightest subsample has been observed in more detail with the Danish 1.54 m telescope, the ESO 1.52cm telescope and the 3.6m telescope, all located at the Observatory of La Silla, in Chile.
The main goal of the observations was to obtain information on the morphology of the member galaxies, their star formation history, the activity level inside the groups and the environment, making the SCGs sample the southern counterpart of the much better known Hickson compact groups catalog, a.k.a. HCGs.
We list here only the people currently involved with the project; many contributions have also come from R. Coziol (Guanajuato, Mexico),
R.R. de Carvalho (INPE, Brazil), L. Tanvuia (Astronomical Observatory of Wien), S. G. Temporin (now at Saclay) and M. Dahlem (ATCA)
A.
Iovino
Osservatorio astronomico di Brera-Merate
Via Brera 28
20100 Milano
ITALY
iovino@brera.astro.mi.it
E.
Pompei
European Southern Observatory
Alonso de Cordova 3107 - Vitacura
Santiago de Chile
CHILE
epompei@eso.org
S.
Giovanna Temporin
Osservatorio astronomico di Brera-Merate
Via Brera 28
20100 Milano
ITALY
temporin@brera.astro.mi.it
M.
Dahlem
Australia Telescope National Facility - Paul Wild Observatory
Locked Bag 194
Narrabri NSW 2390
AUSTRALIA
michael.dahlem@csiro.au
| Southern Compact Groups | |||
| A. Iovino, I. Prandoni, H.T. McGillivray, P. Hickson, G. Palumbo | 55 new compact groups in the southern sky from an automated search | ASP, 51, 21 | 1992 |
| I. Prandoni, A. Iovino, H.T. McGillivray | Automated search for compact groups in the southern sky | AJ, 107, 1235 | 1994 |
| T. Osterloo, A. Iovino | HI observations of compact groups of galaxies | ASP, 316, 958 | 1997 |
| T. Osterloo, A. Iovino | HI observations of compact groups of galaxies | PASA, 14, 48 | 1997 |
| A. Iovino, P. Hickson | Discordant redshifts in compact groups | MNRAS, 287, 21 | 1997 |
| A. Iovino, E. Tassi, C. Mendes de Oliveira, P. Hickson, H. Mc Gillivray | A new automated sample of compact groups of galaxies | IAU Symp 186, 412 | 1999 |
| A. Iovino | A new compact groups sample in the southern sky | ASPC, 209, 25 | 2000 |
| R. Coziol, A. Iovino, R.R. de Carvalho | The relation between activity and environment in Compact Groups of galaxies | AJ, 120, 47 | 2000 |
| A. Iovino | Detecting fainter compact groups: results from a new automated algorithm | AJ, 124, 2471 | 2002 |
| E. Pompei, A. Iovino | Galaxy evolution in a new Southern Compact Groups sample | Ap&SS, 285, 133 | 2003 |
| E. Pompei, A. Iovino | Galaxy evolution in a new Southern Groups sample | RMxAC, 17, 35 | 2003 |
| A. Iovino | Groups of galaxies | Baryons in dark matter halos, SISSA proceedings, page 30 | 2004 |
| S. G. Temporin, S. Ciroi, A. Iovino, E. Pompei, M. Radovich, P. Rafanelli | Star formation in three nearby galaxy systems | ASSL, 329, 78 | 2005 |
| E. Pompei, M. Dahlem, A. Iovino | Optical and radio survey of Southern Compact Groups of galaxies. I. Pilot study of six groups | A&A, accepted | 2007 |
Observational cosmology, IAU Symp, September 21-25, 1992
The nature of elliptical galaxies, 2 Stromlo symposium, 1997
Galaxy interactions at low and high redshift, August 26-30, 1997, Kyoto, JAPAN
Small galaxy groups, June 13-18, 1999, Turku, FINLAND
From 30 Doradus to Lyman break galaxies, September 6-10, 2004, Heidelberg, GERMANY
Baryons in dark matter halos, October 5-9, 2004, Novigrad, CROATIA
Groups of galaxies in the nearby Universe, December 5-9 2005, CHILE
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