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Date and Time of the Query: 2019-04-22 T23:43:13 PDT
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For refcode 2002AJ....124.2471I:
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2002AJ....124.2471I DETECTING FAINTER COMPACT GROUPS: RESULTS FROM A NEW AUTOMATED ALGORITHM ANGELA IOVINO Osservatorio Astronomico di Brera, via Brera 28, I-20121 Milano, Italy; iovino@brera.mi.astro.it Received 2002 May 15; accepted 2002 July 17 ABSTRACT We present a new sample of compact groups in the southern sky, selected by an automated detection algorithm applied to a digitized galaxy database. The selection criteria differ slightly from those adopted in the pioneering work by Hickson in 1982. Our search extends to fainter magnitudes and our algorithm tries to minimize contamination by foreground/background galaxies. The selected sample comprises 121 groups over an area of ~5200 deg^2^, i.e., ~25% of the southern sky. The properties of these groups (e.g., luminosity concordance of member galaxies, high group surface brightness) suggest that they are truly high-density systems: dynamical evolutionary effects related to their dense environment have modified the properties of group member galaxies and of each group as a whole. Key words: galaxies: clusters: general - galaxies: interactions
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