Quasars and the Hubble Relation

TL;DR

This paper proposes that active galaxies evolve from high to low redshift states, transitioning from quasars to galaxies, ultimately aligning with the Hubble relation as they age.

Contribution

It introduces an evolutionary model linking quasars and active galaxies through redshift changes over time.

Findings

Evidence for a redshift sequence from quasars to galaxies

Active galaxies evolve from high to low redshift

Objects eventually conform to the Hubble relation

Abstract

If active galaxies are defined as extragalactic objects with appreciably non thermal spectra then a continuity exists in redshift from the highest redshift quasars to low redshift Seyferts, AGNs and allied galaxies. Evidence is discussed for this sequence to be an evolutionary track with objects evolving from high to low intrinsic redshift with time. At the end of this evolution the objects are nearly the same age as our own galaxy and they come to rest on the traditional Hubble relation.