A search for primeval galaxies using a narrow-band imaging technique

Details A search for primeval galaxies using a narrow-band imaging technique A search for primeval galaxies using a narrow-band imaging technique

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...320..464p&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 320, Sept. 15, 1987, p. 464-467.

Astronomy and Astrophysics

Astrophysics

30

Galactic Evolution, Lyman Alpha Radiation, Optical Emission Spectroscopy, Optical Filters, Visual Observation, Bandwidth, Emission Spectra, Imaging Techniques

Scientific paper

A search has been made for faint emission-line objects by using a narrow-band imaging technique at wavelengths between 6000 and 8000 A. The observations are used to place constraints on the number density of Ly-alpha emission objects at redshifts of z = 4-6; either the surface density of primeval galaxies at z = 5 with strong Ly-alpha is less than about 0.1/sq arcmin, or such objects possess R magnitudes fainter than +27.5. Both of these possibilities appear to contravene current theoretical models, although a variety of explanations are possible.

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