SIMBAD references

2003MNRAS.342L..53D - Mon. Not. R. Astron. Soc., 342, L53-L57 (2003/July-2)

Detection of type 2 quasars in the radio galaxies B3 0731+438 and 3C 257.

DERRY P.M., O'BRIEN P.T., REEVES J.N., WARD M.J., IMANISHI M. and UENO S.

Abstract (from CDS):

We present XMM-Newton observations and spectral fitting of two high-redshift, [Oiii]-luminous, narrow-line radio galaxies, B3 0731+438 and 3C 257. Their X-ray continua are well fitted by a partial covering model with intrinsically unabsorbed and absorbed power-law components. The spectral models indicate that both objects harbour highly obscured nuclei, with NH~ 0.5-2 x1023/cm2. Correcting for this absorption we find large intrinsic luminosities in the range LX~ 0.2-1x1045 erg/s. Thus, both sources are type 2 quasars.

Abstract Copyright: 2003 RAS

Journal keyword(s): galaxies: active - galaxies: individual: B3 0731+438 - galaxies: individual: 3C 257 - quasars: general - X-rays: galaxies

Simbad objects: 6

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