Discovery of a normal galaxy at Z = 1.018

Abstract

view Abstract Citations (19) References (19) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Discovery of a Normal Galaxy at Z = 1.018 Thompson, D. J. ; Djorgovski, S. Abstract We report on the discovery of an apparently normal galaxy at z = 1.018, designated G0333 + 3208, found during a long-slit search for faint emission-line objects. One strong emission line has been detected in the wavelength range 3800-8500 A, which we attribute to [O II] λ3727. The object is a ~24 mag galaxy with a relatively flat optical spectrum. There are no morphological or spectroscopic signs of an active nucleus in the object, or in its vicinity, and no radio flux from the object down to 200μJy rms at λ = 20 cm. From the emission-line flux, assuming photoionization by young stars and a normal IMF, we estimate a star formation rate of ~3.5h^2^ M_sun_ yr^-1^(for {OMEGA}_0_= 1). This object would thus be among the most distant of normal galaxies now known. It may be representative of the faint blue or flat-spectrum population, which dominates deep galaxy counts. Publication: The Astrophysical Journal Pub Date: April 1991 DOI: 10.1086/186001 Bibcode: 1991ApJ...371L..55T Keywords: Cosmology; Emission Spectra; Faint Objects; Galactic Evolution; Quasars; Spectral Line Width; Astrophysics; COSMOLOGY; GALAXIES: EVOLUTION; GALAXIES: FORMATION; GALAXIES: REDSHIFTS full text sources ADS | data products NED (2) SIMBAD (1)