086131

We.ve shown in our recent X-ray studies of the Draco comma Willman 1 comma Sagittarius openParSgrclosePar dwarf spheroidal galaxies openPardSphsclosePar that the X-ray population in these very old and faint galaxies is very different from that in other Local Group galaxies and is dominated by accreting white dwarfs openParAWDsclosePardoublePoint at least four AWDs in the Draco dSph comma one in Willman 1 dSph comma and ten in the center of Sgr dSph. Optical and infrared studies show that the closet dwarf galaxy comma Canis Major openParCMaclosePar comma has an old massive core mainly populated by red giant branch openParRGBsclosePar stars. We propose to observe the center of CMa dwarf galaxy comma which have not been yet observed in X- rays in order to analyse AWDs using X-ray and multi-wavelength data comma and to perform a comparative study of the X-ray luminosity function of AWDs of dwarf galaxies.