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2006MNRAS.370.1633H - Mon. Not. R. Astron. Soc., 370, 1633-1650 (2006/August-3)
The co-evolution of the obscured quasar PKS 1549-79 and its host galaxy: evidence for a high accretion rate and warm outflow.
HOLT J., TADHUNTER C., MORGANTI R., BELLAMY M., GONZALEZ-DELGADO R.M., TZIOUMIS A. and INSKIP K.J.
Abstract (from CDS):
Together, the observations lend strong support to the predictions of some recent numerical simulations of galaxy mergers in which the black hole grows rapidly through merger-induced accretion following the coalescence of the nuclei of two merging galaxies, and the major growth phase is largely hidden at optical wavelengths by the natal gas and dust. Although the models also predict that AGN-driven outflows will eventually remove the gas from the bulge of the host galaxy, the visible warm outflow in PKS 1549-79 is not currently capable of doing so. However, much of the outflow may be hidden by the material obscuring the quasar and/or tied up in hotter or cooler phases of the interstellar medium.
By combining our estimates of the reddening of the quasar with the Hi column derived from the 21-cm radio observations, we have also made the first direct estimate of the Hi spin temperature in the vicinity of a luminous AGN: Tspin> 3000 K.
Abstract Copyright: 2006 The Authors. Journal compilation © 2006 RAS
Journal keyword(s): galaxies: formation - galaxies: individual: PKS 1549-79 - galaxies: interactions - quasars: general - galaxies: starburst
Simbad objects: 9
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