Extreme r-process Enhanced Stars at High Metallicity in Fornax*
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Extreme r-process Enhanced Stars at High Metallicity in Fornax*. / Reichert, M.; Hansen, C. J.; Arcones, A.
In: Astrophysical Journal, Vol. 912, No. 2, 157, 05.2021.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Extreme r-process Enhanced Stars at High Metallicity in Fornax*
AU - Reichert, M.
AU - Hansen, C. J.
AU - Arcones, A.
PY - 2021/5
Y1 - 2021/5
N2 - We present and discuss three extremely r-process enhanced stars located in the massive dwarf spheroidal galaxy Fornax. These stars are very unique with an extreme Eu enrichment (1.25 1) at high metallicities (i.e., [Fe/H] greater than or similar to -1.5). The stellar abundance pattern contains Lu, observed for the first time in a dwarf galaxy, and reveals that a late burst of star formation has facilitated extreme r-process enhancement late in the galaxy's history (
AB - We present and discuss three extremely r-process enhanced stars located in the massive dwarf spheroidal galaxy Fornax. These stars are very unique with an extreme Eu enrichment (1.25 1) at high metallicities (i.e., [Fe/H] greater than or similar to -1.5). The stellar abundance pattern contains Lu, observed for the first time in a dwarf galaxy, and reveals that a late burst of star formation has facilitated extreme r-process enhancement late in the galaxy's history (
KW - METAL-POOR STARS
KW - LABORATORY TRANSITION-PROBABILITIES
KW - CORE-COLLAPSE SUPERNOVAE
KW - OSCILLATOR-STRENGTHS
KW - ABUNDANCE PATTERNS
KW - NEUTRON-CAPTURE
KW - CHEMICAL-COMPOSITIONS
KW - SOLAR ABUNDANCE
KW - DWARF GALAXIES
KW - ZR I
U2 - 10.3847/1538-4357/abefd8
DO - 10.3847/1538-4357/abefd8
M3 - Journal article
VL - 912
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 2
M1 - 157
ER -
ID: 271822485