WHT spectroscopy of emission-line gas around two separate quasars at Z = 0.87

Details WHT spectroscopy of emission-line gas around two separate quasars at Z = 0.87 WHT spectroscopy of emission-line gas around two separate quasars at Z = 0.87

Dec 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988mnras.235p..13f&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 235, Dec. 1, 1988, p. 13P-18P. Research supported by th

Astronomy and Astrophysics

Astronomy

17

Astronomical Spectroscopy, Emission Spectra, Faint Objects, Quasars, Galactic Clusters, Intergalactic Media, Oxygen Spectra, Red Shift

Scientific paper

The authors report observations made with the Faint Object Spectrograph on the 4.2-m William Herschel Telescope (WHT), in which the line emission of the fuzz around two separate quasars, which coincidentally both have redshifts z = 0.87, is detected and measured. The oxygen line ratios are similar to those of the lower-z quasar 3C 48 and imply a high gas density. If confined by surrounding hot gas, the pressure is so high that an intracluster medium is required. This suggests that the quasars lie in clusters or groups of galaxies. The emission-line gas and the fuel for the quasar luminosity then derive from a cooling flow in the intracluster gas.

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