Galaxies in the first billion years

Implications for re-ionization and the star formation history at z>6

Andrew J. Bunker, Elizabeth R. Stanway, Laurence P. Eyles, Richard S. Ellis, Richard G. McMahon, Mark Lacy, Daniel P Stark

Research output: Contribution to journalArticle

Abstract

We discuss the selection of star-forming galaxies at z6 through the Lyman-break technique. Spitzer imaging implies many of these contain older stellar populations (>200Myr) which produce detectable Balmer breaks. The ages and stellar masses (1010M) imply that the star formation rate density at earlier epochs may have been significantly higher than at z6, and might have played a key role in re-ionizing the universe.

Original languageEnglish (US)
Pages (from-to)248
Number of pages1
JournalProceedings of the International Astronomical Union
Volume2
Issue number14
DOIs
StatePublished - Aug 2006
Externally publishedYes

Fingerprint

Galaxies
star formation rate
stellar mass
Stars
Ionization
star formation
ionization
universe
time measurement
histories
galaxies
stars
history
Imaging techniques
rate

Keywords

  • Evolution
  • Formation
  • Galaxies: high-redshift
  • Stellar content

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Aerospace Engineering

Cite this

Galaxies in the first billion years : Implications for re-ionization and the star formation history at z>6. / Bunker, Andrew J.; Stanway, Elizabeth R.; Eyles, Laurence P.; Ellis, Richard S.; McMahon, Richard G.; Lacy, Mark; Stark, Daniel P.

In: Proceedings of the International Astronomical Union, Vol. 2, No. 14, 08.2006, p. 248.

Research output: Contribution to journalArticle

Bunker, Andrew J. ; Stanway, Elizabeth R. ; Eyles, Laurence P. ; Ellis, Richard S. ; McMahon, Richard G. ; Lacy, Mark ; Stark, Daniel P. / Galaxies in the first billion years : Implications for re-ionization and the star formation history at z>6. In: Proceedings of the International Astronomical Union. 2006 ; Vol. 2, No. 14. pp. 248.
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