Lyman alpha forest of 55 QSOs : J/ApJ/662/72

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Authors : Becker G.D. orcid , Rauch M., Sargent W.L.W. (hide) , Rauch M., Sargent W.L.W. et..al

VizieR DOI : 10.26093/cds/vizier.16620072
Bibcode : 2007ApJ...662...72B (ADS) (Simbad) (Objects)
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CDS Keywords : QSOs; Redshifts; Spectroscopy
UAT : Quasars, Redshifted, Spectroscopy

Observation (OC)

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Inserted into VizieR : 16-May-2009
Last modification : 29-Sep-2017

The evolution of optical depth in the Ly{alpha} forest evidence against reionization at z~6. (2007)

Keywords : cosmology observations - early universe - intergalactic medium - quasars: absorption lines

Abstract:We examine the evolution of the IGM Ly{alpha} optical depth distribution using the transmitted flux probability distribution function (PDF) in a high-resolution sample of 55 QSOs spanning absorption redshifts 1.7<z<5.8. The data are compared to two theoretical {tau} distributions: a model distribution based on the density distribution of Miralda-Escude et al. (2000ApJ...530....1M; MHR00) and a lognormal distribution. ...(more)
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Observations were made using the HIRES spectrograph on Keck I between 1993 and 2006. 


                


                

                    

                


                

                    

                


                

                    
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