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We report the results of our observations of the nebular complex MH9/10/11,associated with the ULX HoIX X-1, with scanning Fabry-Perot Interferometer. Tworegions differing by their kinematics and line ratios may be distinguished,roughly corresponding to the bubble nebula MH9/10 and fainter HII-region MH11.For MH9/10 we find the expansion rate of 20-70km/s that is different for theapproaching and receding parts. MH11 is characterised by very low velocitydispersion (less than or about 15km/s) and nearly constant line-of-sightvelocities. Properties of MH11 may be explained by photoionization of gas withhydrogen density of about 0.2cm^-3. Luminosity required for that should be ofthe order of 10^39erg/s. Similar power source is required to explain theexpansion rate of MH9/10. Modelling results also indicate that oxygen abundancein MH11 is about solar.

Kinematics of the Nebular Complex MH9/10/11 Associated with HoIX X-1