SIMBAD references

We report the result of searching for globular clusters (GCs) around 55 Milky Way (MW) satellite dwarf galaxies within the distance of 450 kpc from the Galactic Centre except for the Large and Small Magellanic Clouds and the Sagittarius dwarf. For each dwarf, we analyse the stellar distribution of sources in Gaia DR2, selected by magnitude, proper motion, and source morphology. Using the kernel density estimation of stellar number counts, we identify 11 possible GC candidates. Cross-matched with existing imaging data, all 11 objects are known either GCs or galaxies and only Fornax GC 1-6 among them are associated with the targeted dwarf galaxy. Using simulated GCs, we calculate the GC detection limit M_V^lim that spans the range from M_V^lim∼-7 for distant dwarfs to M_V^lim∼0 for nearby systems. Assuming a Gaussian GC luminosity function, we compute that the completeness of the GC search is above 90 per cent for most dwarf galaxies. We construct the 90 per cent credible intervals/upper limits on the GC specific frequency S_N of the MW dwarf galaxies: 12 < S_N < 47 for Fornax, S_N < 20 for the dwarfs with -12 < M_V < -10, S_N < 30 for the dwarfs with -10 < M_V < -7, and S_N < 90 for the dwarfs with M_V > -7. Based on S_N, we derive the probability of galaxies hosting GCs given their luminosity, finding that the probability of galaxies fainter than M_V = -9 to host GCs is lower than 0.1.