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Astron. Astrophys. Suppl. Ser.
Volume 118, Number 3, September 1996
Page(s) 429 - 439
Published online 15 September 1996
Morphology of early--type galaxies in compact groups.IV. Rose groups DOI: 10.1051/aas:1996209

Astronomy and Astrophysics Supplement Series, Vol. 118, September 1996, 429-439

Morphology of early--type galaxies in compact groups.IV. Rose groups

D. Bettoni and G. Fasano

Send offprint requests to: D. Bettoni

Osservatorio Astronomico, Vicolo dell' Osservatorio, 5, I--35122 Padova, Italy

Received July 28, 1995; accepted January 23, 1996


In the previous papers of this series (Bettoni & Fasano 1993, 1995 and Fasano & Bettoni 1994) we presented data relative to early-type galaxies in several Hickson (1982) and Shakhbazyan (1973-1979) Compact Groups. In this paper we present, for the first time, data on early-type galaxies belonging to 9 Rose (1977) compact groups. The selection criteria of these groups make them more compact than the Hickson and Shakhbazyan groups and, for this reason, the Rose groups constitute a good sample for testing the properties of early-type galaxies in environments of extreme (at least apparent) density. Even if the present sample is not a sizeable one (18 objects), we find that morphological and photometric properties of E and S0 galaxies in the Rose groups are fairly consistent with those of galaxies in the Hickson and Shakhbazyan samples. In particular, there is a lack of very flat objects in the ellipticity distribution.

Key words: galaxies: compact

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