On the early evolution of Local Group dwarf galaxy types: star formation and supernova feedback
نویسندگان
چکیده
منابع مشابه
formation and evolution of regional organizations: the case study of the economic cooperation organization (eco)
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We have conducted an optical long-term monitoring survey of the majority of dwarf galaxies in the Local Group, with the Isaac Newton Telescope (INT), to identify the long period variable (LPV) stars. LPV stars vary on timescales of months to years, and reach the largest amplitudes of their brightness variations at optical wavelengths, due to the changing temperature. They trace stellar populati...
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40 galaxies are currently known as, or suspected to be LG members within a radius of 1.8 Mpc. 37 of these galaxies are dwarf galaxies with MB > −18.5 mag. I present a compilation of the star formation histories of dwarf irregulars, dwarf ellipticals, and dwarf spheroidals in the Local Group, and visualize their evolutionary histories through Hodge’s population boxes. The study of these star for...
متن کاملIncluding star formation and supernova feedback within cosmological simulations of galaxy formation
We investigate phenomenological models of star formation and supernova feedback in N -body/SPH simulations of galaxy formation. First, we compare different prescriptions in the literature for turning cold gas into stars neglecting feedback effects. We find that most prescriptions give broadly similar results: the ratio of cold gas to stars in the final galaxies is primarily controlled by the ra...
متن کاملStar Formation and Feedback in Dwarf Galaxies
We examine the star formation history and stellar feedback effects of dwarf galaxies under the influence of extragalactic ultraviolet radiation. Previous work has indicated that the background UV flux can easily ionize the gas within typical dwarf galaxies, delaying or even preventing cooling and star formation within them. Many dwarf galaxies within the Local Group are, however, observed to co...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2018
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/sty1651