EDP Sciences
Free access
Volume 398, Number 1, January IV 2003
Page(s) 13 - 22
Section Extragalactic astronomy
DOI http://dx.doi.org/10.1051/0004-6361:20021636

A&A 398, 13-22 (2003)
DOI: 10.1051/0004-6361:20021636

Optical observations of a newly identified compact galaxy group near the Zone of Avoidance

S. Temporin1 and S. Ciroi2

1  Institut für Astrophysik, Universität Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria
2  Dipartimento di Astronomia dell' Universitá di Padova, Vicolo dell'Osservatorio 2, 35122 Padova, Italy
    e-mail: ciroi@pd.astro.it

(Received 11 September 2002 / Accepted 22 October 2002)

We have identified a new group of galaxies, CG J0247+44.9 , at low galactic latitude ( $l=143^{\circ}.64$, $b=-13^{\circ}.29$), which satisfies Hickson's criteria (Hickson 1997 for Compact Groups (CGs)). Our group consists of six members, two of which are in close interaction ( IRAS 02443+4437 ).

We present here optical photometry (BVRI) and low resolution spectroscopy of the individual galaxies and investigate the global properties of the group. Our morphological analysis reveals that two out of the six objects are lenticular galaxies. The others are spirals showing emission lines in their spectra through which we could classify them as a starburst galaxy (the spiral member of the IRAS 02443+4437 close pair), a Seyfert 2, a LINER and a weak HII galaxy. Since the S0/Sa is the prevailing morphology for the galaxies of this group, which is also characterized by a short crossing time and a relatively high velocity dispersion, we suggest that CG J0247+44.9 is a dynamically old compact group.

Key words: galaxies: clusters: individual: CG J0247+44.9 -- galaxies: photometry -- galaxies: interactions

Offprint request: S. Temporin, giovanna.temporin@uibk.ac.at

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© ESO 2003