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We present a detailed analysis of the neutral hydrogen kinematics of 12 nearby dwarf irregular galaxies observed as part of the Local Volume H  i  Survey conducted at the Australia Telescope Compact Array. For each galaxy we measure the disc parameters (inclination, position angle) and the H  i  rotation curve. Six galaxies in our sample (AM 0605−341, Argo Dwarf, ESO 059−G001, ESO 137−G018, ESO 174−G?001 and ESO 308−G022) have their atomic hydrogen distribution studied for the first time. AM 0605−341 was found to have an extension of redshifted H  i  which we propose is due to a tidal interaction with NGC 2188. There is evidence that ESO 215−G?009 has extraplanar H  i  gas. We also compare the global galaxy properties, in particular the integrated H  i  flux density and velocity widths of the observed H  i  spectra, with the results from the low angular resolution H  i  Parkes All Sky Survey. We discuss under what circumstances the 21 cm emission‐line profile can accurately predict the galaxies rotation velocity, an observational parameter crucial to study the classical and baryonic Tully–Fisher relations.

The Local Volume H i Survey: galaxy kinematics 1★ [link]