High-redshift Lyman-α galaxies

Sangeeta Malhotra, James E. Rhoads

Research output: Contribution to journalArticlepeer-review


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)
Pages (from-to)254
Number of pages1
JournalProceedings of the International Astronomical Union
Issue number14
StatePublished - Aug 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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