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We identify the rich Carbon star population of the Magellanic-type dwarfirregular galaxy WLM (Wolf-Lundmark-Melotte) and study its photometricproperties from deep near-IR observations. The galaxy exhibits also a clearpresence of Oxygen rich population. We derive a Carbon to M-star ratio ofC/M=0.56(+/-0.12), relatively high in comparison with many galaxies. Thespatial distribution of the AGB stars in WLM hints at the presence of twostellar complexes with a size of a few hundred parsecs. Using the HI map of WLMand the derived gas-to-dust ratio for this galaxy we re-determined the distancemodulus of WLM from the IR photometry of four known Cepheids, obtaining(m-M)o=24.84(+/-0.14) mag. In addition, we determine the scale length of0.75(+/-)0.14 kpc of WLM disk in J-band.Comment: 8 pages, 9 eps figures, Accepted for publication in A&

Carbon stars and C/M ratio in the WLM dwarf irregular galaxy