We carried out detailed kinematic studies of the complex of multiple HÂ I and HÂ II shells that represent the only region of ongoing star formation in the dwarf irregular galaxy ICÂ 1613 .
We investigated the ionized-gas kinematics by using Fabry–Perot H \alpha observations with the 6-m Special Astrophysical Observatory telescope and the neutral-gas kinematics by using VLA 21-cm radio observations .
We identified three extended ( 300–350Â pc ) neutral shells with which the brightest HÂ II shells in the complex of star formation are associated .
The neutral-gas kinematics in the complex has been studied for the first time and the H I shells were found to expand at a velocity of 15–18 km s ^ { -1 } .
We constructed velocity ellipses for all HÂ II shells in the complex and refined ( increased ) the expansion velocities of most of them .
The nature of the interacting ionized and neutral shells is discussed .