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- W3100914594 endingPage "949" @default.
- W3100914594 startingPage "931" @default.
- W3100914594 abstract "We present an abundance analysis based on high resolution spectra of 10 stars selected to span the full range in metallicity in the Ursa Minor dwarf spheroidal galaxy. We find [Fe/H] for the sample stars ranges from -1.35 to -3.10 dex and establish the trends of the abundance ratios [X/Fe]. In key cases, particularly for the alpha-elements, these resemble those for stars in the outer part of the Galactic halo, especially at the lowest metallicities probed. The n-capture elements show a r-process distribution over the full range of Fe-metallicity. This suggests that the duration of star formation in the UMi dSph was shorter than in other dSph galaxies. The derived ages for a larger sample of UMi stars with more uncertain metallicities also suggest a population dominated by uniformly old (~13 Gyr) stars, with a hint of an age-metallicity relationship. In comparing our results for UMi, our earlier work in Draco, and published studies of more metal-rich dSph Galactic satellites, there appears to be a pattern of moving from a chemical inventory for dSph giants with [Fe/H] < -2 dex which is very similar to that of stars in the outer part of the Galactic halo (enhanced alpha/Fe relative to the Sun, coupled with subsolar [X/Fe] for the heavy neutron capture elements and r-process domination), switching to subsolar alpha-elements and super-solar s-process dominated neutron capture elements for the highest [Fe/H] dSph stars. The combination of low star formation rates over a varying and sometimes extended duration that produced the stellar populations in the local dSph galaxies with [Fe/H] > -1.5 dex leads to a chemical inventory wildly discrepant from that of any component of the Milky Way." @default.
- W3100914594 created "2020-11-23" @default.
- W3100914594 creator A5042918487 @default.
- W3100914594 creator A5063795060 @default.
- W3100914594 date "2010-07-23" @default.
- W3100914594 modified "2023-10-02" @default.
- W3100914594 title "THE CHEMICAL EVOLUTION OF THE URSA MINOR DWARF SPHEROIDAL GALAXY" @default.
- W3100914594 cites W1588138813 @default.
- W3100914594 cites W1965561594 @default.
- W3100914594 cites W1967911932 @default.
- W3100914594 cites W1968608320 @default.
- W3100914594 cites W1971292707 @default.
- W3100914594 cites W1972699824 @default.
- W3100914594 cites W1977330688 @default.
- W3100914594 cites W1980935497 @default.
- W3100914594 cites W1981945647 @default.
- W3100914594 cites W1984607950 @default.
- W3100914594 cites W1988764816 @default.
- W3100914594 cites W1989788227 @default.
- W3100914594 cites W1992798342 @default.
- W3100914594 cites W1994166266 @default.
- W3100914594 cites W1998001053 @default.
- W3100914594 cites W2003102625 @default.
- W3100914594 cites W2008710846 @default.
- W3100914594 cites W2013605750 @default.
- W3100914594 cites W2021860039 @default.
- W3100914594 cites W2023559740 @default.
- W3100914594 cites W2032927073 @default.
- W3100914594 cites W2033027392 @default.
- W3100914594 cites W2033185789 @default.
- W3100914594 cites W2034457553 @default.
- W3100914594 cites W2040458777 @default.
- W3100914594 cites W2043258333 @default.
- W3100914594 cites W2045214379 @default.
- W3100914594 cites W2047798125 @default.
- W3100914594 cites W2050756618 @default.
- W3100914594 cites W2050809554 @default.
- W3100914594 cites W2064076500 @default.
- W3100914594 cites W2064191750 @default.
- W3100914594 cites W2064235661 @default.
- W3100914594 cites W2069486258 @default.
- W3100914594 cites W2073049721 @default.
- W3100914594 cites W2075085955 @default.
- W3100914594 cites W2075834906 @default.
- W3100914594 cites W2083255549 @default.
- W3100914594 cites W2083789047 @default.
- W3100914594 cites W2088048947 @default.
- W3100914594 cites W2103024508 @default.
- W3100914594 cites W2103367868 @default.
- W3100914594 cites W2103941552 @default.
- W3100914594 cites W2107380670 @default.
- W3100914594 cites W2108059869 @default.
- W3100914594 cites W2111817932 @default.
- W3100914594 cites W2113340703 @default.
- W3100914594 cites W2116841933 @default.
- W3100914594 cites W2123829915 @default.
- W3100914594 cites W2124199755 @default.
- W3100914594 cites W2126331421 @default.
- W3100914594 cites W2128841780 @default.
- W3100914594 cites W2131999259 @default.
- W3100914594 cites W2139031955 @default.
- W3100914594 cites W2142471547 @default.
- W3100914594 cites W2142484509 @default.
- W3100914594 cites W2147838072 @default.
- W3100914594 cites W2152671803 @default.
- W3100914594 cites W2153223411 @default.
- W3100914594 cites W2157594202 @default.
- W3100914594 cites W2157917411 @default.
- W3100914594 cites W2164187700 @default.
- W3100914594 cites W2169155543 @default.
- W3100914594 cites W2169323726 @default.
- W3100914594 cites W2172241324 @default.
- W3100914594 cites W2761457172 @default.
- W3100914594 cites W2950005664 @default.
- W3100914594 cites W3023613093 @default.
- W3100914594 cites W3036308761 @default.
- W3100914594 cites W3098274896 @default.
- W3100914594 cites W3099080542 @default.
- W3100914594 cites W3099556949 @default.
- W3100914594 cites W3100085507 @default.
- W3100914594 cites W3100312073 @default.
- W3100914594 cites W3100413654 @default.
- W3100914594 cites W3101317883 @default.
- W3100914594 cites W3101542695 @default.
- W3100914594 cites W3102340708 @default.
- W3100914594 cites W3103956180 @default.
- W3100914594 cites W3104570421 @default.
- W3100914594 cites W3104756897 @default.
- W3100914594 cites W3104832054 @default.
- W3100914594 cites W3104935922 @default.
- W3100914594 cites W3105170935 @default.
- W3100914594 cites W3105212326 @default.
- W3100914594 cites W3105948342 @default.
- W3100914594 cites W3106002991 @default.
- W3100914594 cites W3106100530 @default.
- W3100914594 cites W3121389110 @default.
- W3100914594 cites W4292310541 @default.
- W3100914594 cites W4292954434 @default.