We present detailed spatially-resolved spectroscopy results of the observation of Abell 1835 using the European Photon Imaging Cameras ( EPIC ) and the Reflection Grating Spectrometers ( RGS ) on the XMM-Newton observatory .
Abell 1835 is a luminous ( 10 ^ { 46 } ergs \mbox { s } ^ { -1 } ) , medium redshift ( z = 0.2523 ) , X-ray emitting cluster of galaxies .
The observations support the interpretation that large amounts of cool gas are present in a multi-phase medium surrounded by a hot ( kT _ { e } =8.2 keV ) outer envelope .
We detect O VIII Ly \alpha and two Fe XXIV complexes in the RGS spectrum .
The emission measure of the cool gas below kT _ { e } =2.7 keV is much lower than expected from standard cooling-flow models , suggesting either a more complicated cooling process than simple isobaric radiative cooling or differential cold absorption of the cooler gas .