Deep imaging search for Lyman-alpha emission associated with an H I cloud at Z = 3.4

Details Deep imaging search for Lyman-alpha emission associated with an H I cloud at Z = 3.4 Deep imaging search for Lyman-alpha emission associated with an H I cloud at Z = 3.4

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...406...26r&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 406, no. 1, p. 26-28.

Astronomy and Astrophysics

Astronomy

3

Galactic Evolution, Lyman Alpha Radiation, Ultraviolet Astronomy, Astronomical Photometry, Radio Galaxies

Scientific paper

We have carried out deep broad- and narrow-band imaging of a field reported to contain a possible Zel'dovich pancake at z = 3.4 in order to search for Ly-alpha emission from galaxies or protogalaxies associated with the cloud. We are sensitive to objects with sizes less than 5 arcsec but do not detect any Ly-alpha emission-line objects down to a limiting flux level of 3.8 x 10 exp -30 ergs/s/sq cm/Hz, or an integrated line flux of 4.4 x 10 exp -17 ergs/s/sq cm. This limit is some 25 to 50 times fainter than the Ly-alpha emission detected from a nearby radio galaxy at the same redshift.

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