High-redshift Lyman-α galaxies

Sangeeta Malhotra, James E. Rhoads

Research output: Contribution to journalArticle

Abstract

A strong Lyman- line enables relatively easy detection of high redshift galaxies. Lyman- galaxies are now known from z = 3 to 6.6. No evolution is discerned in the Lyman- line luminosity function in this redshift range. This implies that the intergalactic medium at z = 6 is at least 50% ionized over more than 50% of the volume. Recent continuum detections of these galaxies from HST, MMT and Spitzer are now allowing us to address questions about the nature of these Lyman- emitters, their stellar populations and ages. We find that by and large the Lyman- galaxies are young galaxies dominated by stellar populations that are less than 25 Myr old.

Original languageEnglish (US)
Number of pages1
JournalProceedings of the International Astronomical Union
Volume2
Issue number14
DOIs
StatePublished - Aug 1 2006

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Astronomy and Astrophysics
  • Nutrition and Dietetics
  • Public Health, Environmental and Occupational Health
  • Space and Planetary Science

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