Small-scale hero:massive-star enrichment in the Hercules dwarf spheroidal

Koch, Andreas and Matteucci, F. and Feltzing, S. (2012) Small-scale hero:massive-star enrichment in the Hercules dwarf spheroidal. AIP Conference Proceedings, 1480. p. 190. ISSN 0094-243X

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Abstract

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.

Item Type:
Journal Article
Journal or Publication Title:
AIP Conference Proceedings
ID Code:
83582
Deposited By:
Deposited On:
12 Dec 2016 16:42
Refereed?:
No
Published?:
Published
Last Modified:
11 Mar 2020 05:46