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Near-field cosmology with extremely metal-poor stars

Norris, John; Frebel, Anna

Description

The oldest, most metal-poor stars in the Galactic halo and satellite dwarf galaxies present an opportunity to explore the chemical and physical conditions of the earliest star-forming environments in the Universe. We review the fields of stellar archaeology and dwarf galaxy archaeology by examining the chemical abundance measurements of various elements in extremely metal-poor stars. Focus on the carbon-rich and carbon-normal halo star populations illustrates how these provide insight into the...[Show more]

dc.contributor.authorNorris, John
dc.contributor.authorFrebel, Anna
dc.date.accessioned2016-02-24T22:40:57Z
dc.identifier.issn0066-4146
dc.identifier.urihttp://hdl.handle.net/1885/98509
dc.description.abstractThe oldest, most metal-poor stars in the Galactic halo and satellite dwarf galaxies present an opportunity to explore the chemical and physical conditions of the earliest star-forming environments in the Universe. We review the fields of stellar archaeology and dwarf galaxy archaeology by examining the chemical abundance measurements of various elements in extremely metal-poor stars. Focus on the carbon-rich and carbon-normal halo star populations illustrates how these provide insight into the Population III star progenitors responsible for the first metal enrichment events. We extend the discussion to near-field cosmology, which is concerned with the formation of the first stars and galaxies, and how metal-poor stars can be used to constrain these processes. Complementary abundance measurements in high-redshift gas clouds further help establish the early chemical evolution of the Universe. The data appear consistent with the existence of two distinct channels of star formation at the earliest times.
dc.publisherAnnual Reviews Inc
dc.sourceAnnual Review of Astronomy and Astrophysics
dc.titleNear-field cosmology with extremely metal-poor stars
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume53
dc.date.issued2015
local.identifier.absfor020100 - ASTRONOMICAL AND SPACE SCIENCES
local.identifier.ariespublicationU3488905xPUB5671
local.type.statusPublished Version
local.contributor.affiliationNorris, John, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationFrebel, Anna, Massachusetts Institute of Technology
local.description.embargo2037-12-31
local.bibliographicCitation.issue1
local.bibliographicCitation.startpage631
local.bibliographicCitation.lastpage688
local.identifier.doi10.1146/annurev-astro-082214-122423
dc.date.updated2016-02-24T10:08:12Z
local.identifier.scopusID2-s2.0-84939809923
CollectionsANU Research Publications

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