Triggered star formation in giant HI supershells: ionized gas

Авторы: Egorov O.V., Lozinskaya T.A., Moiseev A.V.
Журнал: Astronomical and Astrophysical Transactions
Том: 29
Номер: 1
Год издания: 2015
Издательство: Cambridge Scientific Publishers
Местоположение издательства: Cambridge
Первая страница: 17
Последняя страница: 24
Аннотация: We considered the regions of triggered star formation inside kpc-sized HI supershells in three dwarf galaxies: IC 1613, IC 2574 and Holmberg II. The ionized and neutral gas morphology and kinematics were studied based on our observations with scanning Fabry–Perot interferometer at the SAO RAS 6-m telescope and 21 cm archival data of THINGS and LITTLE THINGS surveys. Qualitative analysis of the observational data was performed in order to highlight two questions: why the star formation occurred very locally in the supershells, and how the ongoing star formation in HI supershells rims influence its evolution? During the investigation we discovered the phenomenon never before observed in galaxies IC 2574 and Holmberg II: we found faint giant (kpc- sized) ionized shells in Hα and [SII]6717,6731 lines inside the supergiant HI shells.
Добавил в систему: Егоров Олег Владимирович

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