TY - JOUR

T1 - Small-scale hero

T2 - massive-star enrichment in the Hercules dwarf spheroidal

AU - Koch, Andreas

AU - Matteucci, F.

AU - Feltzing, S.

PY - 2012

Y1 - 2012

N2 - Dwarf spheroidal galaxies are often conjectured to be the sites of the first stars. The best current contenders for finding the chemical imprints from the enrichment by those massive objects are the “ultrafaint dwarfs” (UFDs). Here we present evidence for remarkably low heavy element abundances in the metal poor Hercules UFD. Combined with other peculiar abundance patterns this indicates that Hercules was likely only influenced by very few, massive explosive events – thus bearing the traces of an early, localized chemical enrichment with only very little other contributions from other sources at later times.

AB - Dwarf spheroidal galaxies are often conjectured to be the sites of the first stars. The best current contenders for finding the chemical imprints from the enrichment by those massive objects are the “ultrafaint dwarfs” (UFDs). Here we present evidence for remarkably low heavy element abundances in the metal poor Hercules UFD. Combined with other peculiar abundance patterns this indicates that Hercules was likely only influenced by very few, massive explosive events – thus bearing the traces of an early, localized chemical enrichment with only very little other contributions from other sources at later times.

U2 - 10.1063/1.4754353

DO - 10.1063/1.4754353

M3 - Journal article

VL - 1480

SP - 190

JO - AIP Conference Proceedings

JF - AIP Conference Proceedings

SN - 0094-243X

ER -