Mathematics – Logic
Scientific paper
Sep 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...396..411g&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 396, no. 2, Sept. 10, 1992, p. 411-415.
Mathematics
Logic
19
Cosmology, Luminosity, Quasars, Spectrum Analysis, Galactic Evolution, Magnitude, Maximum Likelihood Estimates, Red Shift, Time Dependence
Scientific paper
Uncertainties in the spectral index of the optical spectrum of QSOs induce systematic biases in the estimate of the cosmological evolution of the luminosity function. In a framework of pure luminosity evolution, a slower intrinsic evolution of the luminosity function for z is less than 2.2 after correction for uncertainties in the adopted K-correction is obtained. The slower evolution is consistent with the apparent density decline of high-redshift QSOs (z is greater than 2.5) observed in the red band. It is found that a scenario of uniform luminosity evolution up to z equal to or about 4 is suggested. The apparent decline in the redshift distribution is explained in terms of the sliding down along the steep side of the luminosity function for increasing redshift.
Giallongo Emanuele
Vagnetti Fausto
No associations
LandOfFree
The evolution of the QSO luminosity function up to Z = 4 - The role of K-correction uncertainties does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The evolution of the QSO luminosity function up to Z = 4 - The role of K-correction uncertainties, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The evolution of the QSO luminosity function up to Z = 4 - The role of K-correction uncertainties will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1765837