Spectroscopic limits on high-redshift Ly-alpha emission

Details Spectroscopic limits on high-redshift Ly-alpha emission Spectroscopic limits on high-redshift Ly-alpha emission

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...357....3l&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 357, July 1, 1990, p. 3-7.

Astronomy and Astrophysics

Astrophysics

32

Galactic Evolution, Lyman Alpha Radiation, Red Shift, Relic Radiation, Charge Coupled Devices, Emission Spectra, Line Spectra

Scientific paper

A deep long-slit spectroscopic search was conducted for high-redshift Ly-alpha emission. No emission features were found down to a limiting line surface brightness of 1-4 x 10 to the -18th ergs/s sq cm sq arcsec. The data set upper limits on the mean space density and line flux of randomly distributed Ly-alpha-emitting clouds. These limits approach expected emission levels for fairly conservative published primeval galaxy models. In addition, Ly-alpha emission was searched for, but not detected, from a known Ly-alpha-limit absorption cloud toward QSO 0731 + 653.

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