Ultraviolet observations of a bright southern quasar

Details Ultraviolet observations of a bright southern quasar Ultraviolet observations of a bright southern quasar

Dec 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aj....102.1933k&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 102, Dec. 1991, p. 1933-1938.

Astronomy and Astrophysics

Astronomy

1

Quasars, Sky Surveys (Astronomy), Southern Sky, Ultraviolet Spectra, Iue, Ultraviolet Absorption, Ultraviolet Astronomy

Scientific paper

Low-resolution ultraviolet spectra of the QSO 09149-6206 (z = 0.057) obtained with the International Ultraviolet Explorer are presented. The spectrum shows strong emission lines of Ly-alpha, C IV, semiforbidden C III, Mg II, and Fe II. The Fe II blend centered at 2080 A is unusually strong; this may be a consequence of overcorrection for the 2175 A silicate feature in the reddening curve. Absorption features from the Milky Way are clearly present. There is no evidence for further absorption features due to objects beyond the Galaxy and in the foreground of the QSO. After correcting for Galactic reddening, the spectral energy distribution is very flat from ultraviolet to far-infrared wavelengths; there is no big blue bump in this object. The QSO is detected weakly at 6 cm; only upper limits are found at X-ray wavelengths. The upper limit to the optical-X-ray spectral index is - 1.35. The H-alpha line strength was measured from a spectrum taken under photometric conditions; the Ly-alpha line ratio is 0.8 after correction for reddening. A spectrum of the fuzz surrounding the QSO shows narrow emission lines of H-alpha and forbidden N II, S II, and O I.

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