SIMBAD references

2015ApJ...806L..11P - Astrophys. J., 806, L11 (2015/June-2)

The unification of powerful quasars and radio galaxies and their relation to other massive galaxies.

PODIGACHOSKI P., BARTHEL P., HAAS M., LEIPSKI C. and WILKES B.

Abstract (from CDS):

The unification model for powerful radio galaxies (RGs) and radio-loud quasars postulates that these objects are intrinsically the same but viewed along different angles. Herschel Space Observatory data permit the assessment of that model in the far-infrared spectral window. We analyze photometry from Spitzer and Herschel for the distant 3CR hosts, and find that RGs and quasars have different mid-infrared, but indistinguishable far-infrared colors. Both these properties, the former being orientation dependent and the latter orientation invariant, are in line with expectations from the unification model. Adding powerful radio-quiet active galaxies and typical massive star-forming (SF) galaxies to the analysis, we demonstrate that infrared colors not only provide an orientation indicator, but can also distinguish active from SF galaxies.

Abstract Copyright:

Journal keyword(s): galaxies: active - galaxies: formation - galaxies: high-redshift - galaxies: starburst - infrared: galaxies

Simbad objects: 28

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2021.03.04-10:29:28

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