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Thread: Extensive cataloguing of chemical composition of Sagittarius dwarf galaxy

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    Default Extensive cataloguing of chemical composition of Sagittarius dwarf galaxy



    "An international team of astronomers has performed detailed measurements of the chemical composition of 158 red giant stars in the nearby Sagittarius dwarf galaxy. The study, presented in a paper published July 11 on arXiv.org, is so far the largest and most chemically extensive high-resolution survey of this galaxy."

    ""We find that the Sgr stars with [Fe/H] > -0.8 are deficient in all elemental abundance ratios (expressed as [X/Fe]) relative to the Milky Way, suggesting that Sgr stars observed today were formed from gas that was less enriched by Type II SNe than stars formed in the Milky Way," the paper reads."

    "The team also also found that asymptotic giant branch stars are much larger contributors to the chemical enrichment of Sagittarius when compared to our Milky Way galaxy."

    https://phys.org/news/2017-07-astron...rs-nearby.html
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