Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apj...442..569m&link_type=abstract
Astrophysical Journal (ISSN 0004-637X), vol. 442, no. 2, Part 1, p. 569-578
Astronomy and Astrophysics
Astronomy
16
Emission Spectra, Galactic Evolution, Infrared Astronomy, Infrared Spectra, Line Spectra, Star Formation, Stellar Composition, Astronomical Spectroscopy, Cosmic Dust, Near Infrared Radiation, Star Distribution, Stellar Luminosity
Scientific paper
The first generation of stars at high redshift should have produced bright optical lines of common elements. These lines would appear now in near-infrared bands. We estimate the line fluxes and large-area surface brightnesses of the prominent lines Ly-alpha, H-alpha, H-beta, (O III) lambda 5007, and (O II) lambda 3727 from the first galaxies under a variety of assumptions about the epochs of star formation and cosmology. The results show that these galaxies are within the reach of the present generation of infrared instrumentation for a wide range of star formation histories. We discuss the efficacy for searching for emission-line objects in the near-infrared as a means of finding primeval galaxies and discuss the possible searching strategies with respect to the expected intrinsic scatter of the properties of the forming galaxies.
Beckwith Steven V. W.
Mannucci Filippo
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