X-ray spectra of PG quasars. I - The continuum from X-rays to infrared

Details X-ray spectra of PG quasars. I - The continuum from X-rays to infrared X-ray spectra of PG quasars. I - The continuum from X-rays to infrared

Nov 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...310..291e&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 310, Nov. 1, 1986, p. 291-316.

Astronomy and Astrophysics

Astronomy

127

Astronomical Spectroscopy, Continuous Spectra, Infrared Astronomy, Quasars, X Ray Astronomy, Astronomical Catalogs, Iue, Spaceborne Astronomy, Spectrophotometry, Synchrotron Radiation

Scientific paper

Einstein IPC X-ray spectra for a sample of eight optically selected quasars from the Palomar Bright Quasar survey are presented. The quasars have a mean power law energy slope which in five individual cases is inconsistent with the value found in hard X-ray selection criterion rather than luminosity, redshift, or U-B color. New IUE and optical continuum spectra and infrared photometry are presented for these quasars. The data are combined into log vf(v) and log v distributions which support the decomposition of the overall quasar spectrum into a power law plus a superposed optical-UV 'big bump' which may be due to an accretion disk. At least six of the quasars have vf(v)s which are roughly constant between their infrared and X-ray power laws, suggesting a strong link between the two regions.

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