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2005MNRAS.360..610S - Mon. Not. R. Astron. Soc., 360, 610-618 (2005/June-3)
Submillimetre photometry of X-ray absorbed quasi-stellar objects: their formation and evolutionary status.
STEVENS J.A., PAGE M.J., IVISON R.J., CARRERA F.J., MITTAZ J.P.D., SMAIL I. and McHARDY I.M.
Abstract (from CDS):
Combining these results with previously published data for X-ray unabsorbed QSOs and submillimetre-selected galaxies, we propose the following evolutionary sequence:
(i) the forming galaxy is initially far-infrared luminous but X-ray weak similar to the sources discovered by the Submillimetre Common-User Bolometer Array (SCUBA);
(ii) as the black hole and spheroid grow with time, a point is reached when the central QSO becomes powerful enough to terminate the star formation and eject the bulk of the fuel supply (the Compton-thin absorbed QSO phase);
(iii) this transition is followed by a period of unobscured QSO activity, which subsequently declines to leave a quiescent spheroidal galaxy.
Abstract Copyright: 2005 RAS
Journal keyword(s): galaxies: evolution - galaxies: formation - X-rays: galaxies
Simbad objects: 25
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