Young Stellar Populations at High z: Where are They?

Details Young Stellar Populations at High z: Where are They? Young Stellar Populations at High z: Where are They?

Jul 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999ap%26ss.265..533g&link_type=abstract

Astrophysics and Space Science, v. 265, Issue 1/4, p. 533-540 (1999).

Astronomy and Astrophysics

Astrophysics

Scientific paper

Our view on the deep universe is strongly biassed towards the starlight that directly escapes from high-redshift galaxies, since we know very little on the fraction of luminosity absorbed by dust. Attempts to correct for this effect directly from the slope of the UV spectra seem to suggest that a significant fraction of the UV flux is extinguished. New constraints are now set on the fraction of dust-enshrouded young stellar populations by the detection of the Cosmic Infrared Background, and faint galaxy counts at IR and submm wavelengths. We briefly review the observations and use a semi-analytic model of galaxy formation and evolution to predict number counts consistent with the background.

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