With a deep Chandra ACIS pointing of the compact radio elliptical NGC4278, representative of the less explored class of low/medium mass ellipticals, we studied the origin of the very sub-Eddington nuclear emission, the radiative and mechanical accretion energy outputs, and the unusual sharp increase of the gas temperature at the center. Extended hot gas was also detected, misaligned with the stars and aligned with the ionized gas and dust, an effect possibly due to accreting cold gas triggering the hot gas cooling.
AGN activity and the extended hot ISM in the compact radio elliptical NGC 4278
PELLEGRINI, SILVIA;
2013
Abstract
With a deep Chandra ACIS pointing of the compact radio elliptical NGC4278, representative of the less explored class of low/medium mass ellipticals, we studied the origin of the very sub-Eddington nuclear emission, the radiative and mechanical accretion energy outputs, and the unusual sharp increase of the gas temperature at the center. Extended hot gas was also detected, misaligned with the stars and aligned with the ionized gas and dust, an effect possibly due to accreting cold gas triggering the hot gas cooling.File in questo prodotto:
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