Ultraviolet spectra of a large sample of quasars. I - Data and data reduction

Details Ultraviolet spectra of a large sample of quasars. I - Data and data reduction Ultraviolet spectra of a large sample of quasars. I - Data and data reduction

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989mnras.237..739g&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 237, April 1, 1989, p. 739-755.

Astronomy and Astrophysics

Astronomy

8

Quasars, Stellar Spectra, Ultraviolet Astronomy, Ultraviolet Spectra, Data Reduction, Signal To Noise Ratios

Scientific paper

IUE UV spectrophotometric data of quasars are reextracted directly from the photometrically corrected images, forming a data set of 117 quasars with 173 spectra in the short wavelength (1250-1950 A) region and 167 in the long (2200-3200 A) region. The absolute flux in these low dispersion spectra is within 7 percent of the absolute flux in the spectra provided by the IUE observatories. The median value of the s/n ratio in the continuum is about 6 and the quasars in the sample cover an absolute magnitude range from -23 to -30.

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