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- W4292371434 abstract "The H$alpha$ velocity fields of a sample of six luminous blue compact galaxies (BCGs) and two companions have been obtained by observations with a scanning Fabry-Perot interferometer. The Fabry-Perot images, velocity fields and rotations curves have been presented in a previous paper (Paper I). In general, the velocity fields are irregular and often contain secondary dynamical components, but display overall rotation. The two companions have more regular velocity fields and rotation curves. In this article we analyse the velocity fields and dynamics together with the morphology of the studied BCGs, and present detailed mass models. In addition, we model the stellar mass content by means of multicolour surface photometry and spectral evolutionary synthesis analysis. By comparison of the masses of stars and those derived from the rotation curve, we show that about half of the galaxies cannot be supported by rotation alone. The morphology and dynamics of the BCGs suggest that the starburst activity in these galaxies are most likely triggered by mergers involving gas-rich dwarf galaxies and/or massive gas clouds." @default.
- W4292371434 created "2022-08-20" @default.
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- W4292371434 date "2001-08-01" @default.
- W4292371434 modified "2023-10-16" @default.
- W4292371434 title "Dynamics of blue compact galaxies, as revealed by their H<i>α</i>velocity fields" @default.
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- W4292371434 doi "https://doi.org/10.1051/0004-6361:20010832" @default.
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