A search for primeval galaxies at Z = 1.9

Abstract

view Abstract Citations (40) References (29) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A Search for Primeval Galaxies at Z = 1.9 Pritchet, C. J. ; Hartwick, F. D. A. Abstract We report on the first search for primeval galaxies at redshifts lower than 2. An area of 0.1 deg^2^ has been searched for emission-line objects at 3500 A; none has been found down to a 2 σ surface brightness threshold of 5.4 x 10^-17^ ergs cm^-2^ s^-1^ arcsec^-2^, corresponding to a surface brightness μ_v_ ~ 27.6 mag arcsec^-2^ (for a pure emission-line source). For objects with structure similar to that of the z = 1.8 emission-line galaxy 3C 326.1, the limiting flux is somewhat brighter: ~ 7 x 10^-16^ ergs cm^-2^ s^-1^, or ~ 0.1l_3C326.1_. From this limit, constraints have been placed on the formation of galaxies at redshifts 1.8 or greater. The resultant constraints are marginally in conflict with models for the formation of galaxies in universes dominated by cold dark matter. Publication: The Astrophysical Journal Pub Date: May 1990 DOI: 10.1086/185726 Bibcode: 1990ApJ...355L..11P Keywords: Astronomical Models; Cosmology; Galactic Evolution; Line Spectra; Lyman Alpha Radiation; Red Shift; Space Observations (From Earth); Star Formation; Astrophysics; COSMOLOGY; GALAXIES: EVOLUTION; GALAXIES: FORMATION full text sources ADS | data products SIMBAD (2)