2003/01/13 by T. A. Lozinskaya, A. V. Moiseev, А. В. Моисеев +1 · 3 citations
Engineering · Physics and Astronomy · #Astronomical Observations and Instrumentation #Astrophysics and Star Formation Studies #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.1134/1.1544529
published as Astron.Lett. 29 (2003) 77-90 · 14 pages, 9 EPS-figures
arxiv created 2003/01/13 · openalex publication_date 2003/02/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We carried out detailed kinematic studies of the complex of multiple H I and H II shells that represent the only region of ongoing star formation in the dwarf irregular galaxy IC 1613. We investigated the ionized-gas kinematics by using Fabry—Perot Hα 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 (300–350 pc) neutral shells with which the brightest H 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 H 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.