410 citations · 998 across the 12 of their papers we have counts for
3 papers · 1 filter
Predicting QSO Continua in the Ly Alpha Forest
Nao Suzuki, David Tytler, David Kirkman +2
We present a method to make predictions with sets of correlated data values, in this case QSO flux spectra. We predict the continuum in the Lyman-Alpha forest of a QSO, from 1020 -…
Relative Flux Calibration of Keck HIRES Echelle Spectra
Nao Suzuki, David Tytler, David Kirkman +2
We describe a new method to calibrate the relative flux levels in spectra from the HIRES echelle spectrograph on the Keck-I telescope. Standard data reduction techniques that trans…
The cosmological baryon density from the deuterium to hydrogen ratio towards QSO absorption systems: D/H towards Q1243+3047
David Kirkman, David Tytler, Nao Suzuki +2
We report the detection of Deuterium absorption at redshift 2.525659 towards Q1243+3047. We describe improved methods to estimate the Deuterium to Hydrogen abundance ratio (D/H) in…