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Astron. Astrophys. 321, 64-70 (1997)

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6. Conclusions

We have presented the X-ray, radio data of the cluster A 2717 and analysed the data along with the optical data available in the literature. The cluster has a total X-ray luminosity of [FORMULA] erg s-1 within a radius of 1.3 Mpc and a well determined temperature of [FORMULA] K. The X-ray determined total mass was [FORMULA] [FORMULA] within 1.3 Mpc, comparable to the virial mass given all the uncertainties. The gas mass was found to be [FORMULA] % of the total mass.

The thermal pressure from the ICM was found to be comparable to the minimum pressure in the tails of the radio galaxy associated with the central D galaxy, suggesting that the WAT is most likely to be in equipartition with the surrounding media. The X-ray image of the cluster gas at the PSPC resolution was almost structureless and no obvious interaction between the WAT and the ICM was seen. To obtain detailed morphological information that would show the possible interaction between the radio galaxy and the X-ray medium, as seen in the case of NGC 1275 (Böhringer et al. 1993), we need a higher resolution X-ray image.

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© European Southern Observatory (ESO) 1997

Online publication: June 30, 1998