SIMBAD references

We present deep pointed observations of nine globular clusters obtained with the Rosat PSPC. The clusters observed were selected to be nearby, have low interstellar absorption towards them, and to have high collision number. X-ray sources are detected in the cores of seven of them, at luminosities of ∼1-6x10³²erg/s. At least two of these are multiple. The sources are too dim to obtain spectra of them, but analysis of the X-ray colours indicates that their spectra are not all identical. Four of the seven have colours indicating soft spectra, with blackbody temperatures kT ≲0.3keV. Soft spectra can be excluded for the other three sources.