Automated analysis of slitless spectra. I - Software, algorithms, and calibrations

Details Automated analysis of slitless spectra. I - Software, algorithms, and calibrations Automated analysis of slitless spectra. I - Software, algorithms, and calibrations

Jun 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987pasp...99..535b&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 99, June 1987, p. 535-551. Research supported by the Mi

Astronomy and Astrophysics

Astronomy

21

Astronomical Spectroscopy, Calibrating, Computer Programs, Data Processing, Spectrum Analysis, Stellar Spectra, Algorithms, Computerized Simulation, Galaxies, Line Spectra, Quasars

Scientific paper

Automated software was developed to process slitless spectra. The software automatically separates stars from extended objects and quasars from stars. Among the many parameters output by the program, are narrow-band and broad-band photometric indices, spectra discontinuities, and emission and absorption lines. The lines are found with respect to an automatic continuum fit. All of these quantities are given with associated errors and signal-to-noise ratios. A considerable effort was made to calibrate the data and to understand systematic effects. An attempt was made to give all relevant quantities in terms of signal-to-noise ratios. Extensive use was made of computer simulations to understand the algorithms and check systematic errors. The program does not depend on the measurement of direct plates. The paper discusses in detail the techniques and algorithms used. The software can be used to study stars, galaxies, and quasars.

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