SIMBAD references

We present the results of a 73ks long Chandra observation of the dipping source X 1624-490. During the observation a complex dip lasting 4h is observed. We analyse the persistent emission detecting, for the first time in the 1st-order spectra of X 1624-490, an absorption line associated to CaXX. We confirm the presence of the FeXXV K_α and FeXXVI K_α absorption lines with a larger accuracy with respect to a previous XMM observation. Assuming that the line widths are due to a bulk motion or a turbulence associated to the coronal activity, we estimate that the lines have been produced in a photoionized absorber between the coronal radius and the outer edge of the accretion disk.