Statistics – Computation
Scientific paper
Nov 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984mnras.211..485t&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 211, Nov. 15, 1984, p. 485-495.
Statistics
Computation
1
Astronomical Spectroscopy, Line Spectra, Quasars, Absorption Spectra, Algorithms, Calibrating, Signal To Noise Ratios, Wavelengths
Scientific paper
A technique is presented for computationally enhancing the resolution of quasar emission lines. Quasar spectral data are normally reduced to wavelength-calibrated, sky-subtracted, flat-field spectra with a Poisson distribution about the mean. A straight line can be assigned to the reduced spectra once the lines are divided into a finite number of segment-intervals. The line is fitted with a least squares method and allows for abrupt slope and rate of slope change variations. High-deviance lines are sought out and removed and high deviance segments are ignored. A lower limit is found for the probabilithy of the presence of any specific line. It is found, in comparison with actual data, that selection of a 90 percent efficiency level is sufficient for deriving a complete, uncontaminated data set. Absorption lines are calculated and provided for the quasar 1146+11D.
Brand Peter W. J. L.
Trew A. S.
No associations
LandOfFree
Detection of lines by a calibrated algorithm in a close pair of quasars 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 Detection of lines by a calibrated algorithm in a close pair of quasars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detection of lines by a calibrated algorithm in a close pair of quasars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1755602