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- W1918803940 abstract "We analyse the ionized gas kinematics in the star formation regions of the supergiant shell (SGS) of the IC 2574 galaxy using observations made with the Fabry–Perot interferometer at the 6-m telescope of the Special Astrophysical Observatory of the Russian Academy of Sciences; the data of the H i Nearby Galaxy Survey (THINGS) are used to analyse the neutral gas kinematics in the area. We perform the ‘derotation’ of the Hα and H i data cubes and show its efficiency in the kinematics analysis. We confirm the SGS expansion velocity of 25 km s−1 obtained previously and conclude that the SGS is located at the far side of the galactic disc plane. We determine the expansion velocities, kinematic ages and the required mechanical energy input rates for four star formation complexes in the walls of the SGS; for those remaining, we give the limiting values of the above parameters. A comparison with the age and energy input of the stellar population of the complexes shows that sufficient energy is fed to all H ii regions except one. We discuss in detail the possible nature of this region and that of another region, which was believed to be a supernova remnant, according to radio observations. We have measured the expansion velocity of the latter and we can confirm its identification as an old supernova remnant. Our observations have allowed us to identify a faint diffuse Hα emission inside the SGS, which was not been previously observed." @default.
- W1918803940 created "2016-06-24" @default.
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- W1918803940 date "2014-08-16" @default.
- W1918803940 modified "2023-09-26" @default.
- W1918803940 title "The supergiant shell with triggered star formation in the dwarf irregular galaxy IC 2574: neutral and ionized gas kinematics" @default.
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- W1918803940 doi "https://doi.org/10.1093/mnras/stu1369" @default.
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