A possible blackbody temperature indicator of quasars.

Details A possible blackbody temperature indicator of quasars. A possible blackbody temperature indicator of quasars.

Aug 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989kext...34.1280c&link_type=abstract

Kexue Tongbao, Vol. 34, No. 15, p. 1280 - 1282

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Quasars: Spectra, Quasars: Temperatures

Scientific paper

Malkan and Sargent have fitted the continuum of quasars and Seyfert galaxies by use of three spectra, (1) a power law with slope α ≍ 1.1 (fν ≡ ν-α); (2) a blackbody with temperature between 23,000 and 30,000K and (3) a Balmer continuum. Therefore, if the temperature of the blackbody component changes, its peak will move and the slope of the composite spectrum will be also changed. One can see that the contribution of the Balmer continuum to the composite spectrum is negligibly small in the ultraviolet (UV) band, and then the slope of the continuum at UV band will be sensitively affected by the variation of the blackbody temperature. On the other hand, one has a natural thought that the UV spectral index may be a blackbody temperature indicator of quasars. In this report the authors study the quasar 3C 273 as an example.

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