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2000MNRAS.312..139J - Mon. Not. R. Astron. Soc., 312, 139-150 (2000/February-2)
Multiwavelength observations of an evolved galaxy group: an end-point of galaxy merging?.
JONES L.R., PONMAN T.J. and FORBES D.A.
Abstract (from CDS):
We interpret the properties of the system as a result of galaxy merging within a galaxy group. We find that the central galaxy lies on the Fundamental Plane of ellipticals, has an undisturbed, non-cD morphology, and has no spectral features indicative of recent star formation, suggesting that the last major merger occurred ≳4Gyr ago. The deviation of the system from the cluster LX-T relation in the opposite sense to most groups may be caused by an early epoch of formation of the group or a strong cooling flow.
The unusual elongation of the X-ray isophotes and the similarity between the X-ray and optical ellipticities at large radii (∼230kpc) suggest that both the X-ray gas and the outermost stars of the dominant galaxy are responding to an elongated dark matter distribution. RXJ1340.6+4018 may be part of a filamentary structure related to infall in the outskirts of the cluster A1774.
Abstract Copyright: 2000, Royal Astronomical Society
Journal keyword(s): galaxies: clusters: general - galaxies: elliptical and lenticular, cD - galaxies: interactions - X-rays: galaxies
Nomenclature: Table 1, Fig.1: [JPF2000] GNN (Nos G1-G11).
Simbad objects: 17
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