Test for the cosmological constant with the number count of faint galaxies

Abstract

view Abstract Citations (156) References (22) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Test for the Cosmological Constant with the Number Count of Faint Galaxies Fukugita, M. ; Takahara, F. ; Yamashita, K. ; Yoshii, Y. Abstract Cosmological models are tested against the recent observations of the number count of faint galaxies by Tyson and of the redshift distribution of moderately faint galaxies by Broadhurst, Ellis, and Shanks, particularly with the purpose of examining whether a finite cosmological constant is allowed. Using the canonical galaxy evolution model with the assumption that the comoving number of galaxies is conserved, we have found that these data favor the low-density universe ({OMEGA}_0_ <~ 0.1) and that the high-density universe ({OMEGA}_0_ >~ 0.5) is strongly disfavored. Furthermore, it is shown that the best agreement with the data is obtained with a sizable cosmological constant, including the case of zero curvature model ({OMEGA}_0_ + λ_0_ = 1) as predicted by inflation. Publication: The Astrophysical Journal Pub Date: September 1990 DOI: 10.1086/185813 Bibcode: 1990ApJ...361L...1F Keywords: Cosmology; Faint Objects; Galaxies; Hubble Constant; Astronomical Photometry; Red Shift; Ultraviolet Radiation; Astrophysics; COSMOLOGY; GALAXIES: PHOTOMETRY full text sources ADS | data products SIMBAD (2)