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Almost all dwarf galaxies in the Local Group that are not satellites of theMilky Way or M31, belong to either one of two highly-symmetric planes. It isstill a matter of debate, whether these planar structures are dynamicallystable or whether they only represent a transient alignment. Proper motions, ifthey could be measured, could help to discriminate between these scenarios.Such motions could be determined with multi-epoch Very Long BaselineInterferometry (VLBI) of sources that show emission from water and methanol atfrequencies of 22 and 6.7 GHz, respectively. We report searches for suchmasers. We have mapped three Local Group galaxies, NGC6822, IC1613 and WLM inthe bands covering the water vapor and methanol lines. These systems aremembers of the two above mentioned planes of galaxies. We have produced deepradio continuum (RC) maps and spectral line cubes. The former have been used toidentify star forming regions and to derive global galactic star formationrates (SFRs). These SFRs turn out to be lower than those determined at otherwavelengths in two of our sources. This indicates that dwarf galaxies mayfollow predictions on the RC-SFR relation only in individual regions ofenhanced radio continuum emission, but not when considering the entire opticalbody of the sources. No methanol or water maser emission has been confidentlydetected, down to line luminosity limits of ~0.004 and 0.01 solar luminosities,respectively. This finding is consistent with the small sizes, low SFRs andmetallicities of these galaxies.

Sardinia Radio Telescope observations of Local Group dwarf galaxies -- I. The cases of NGC6822, IC1613, and WLM