Dusty Feedback from Massive Black Holes in Two Elliptical GalaxiesFar-infrared dust emission from elliptical galaxies informs us about galaxy mergers, feedback energy outbursts from supermassive black holes and the age of galactic stars. We report on the role of AGN feedback observationally by looking for its signatures in elliptical galaxies at recent epochs in the nearby universe. We present Herschel observations of two elliptical galaxies with strong and spatially extended FIR emission from colder grains 5-10 kpc distant from the galaxy cores. Extended excess cold dust emission is interpreted as evidence of recent feedback-generated AGN energy outbursts in these galaxies, visible only in the FIR, from buoyant gaseous outflows from the galaxy cores.
Document ID
20160002237
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Temi, P. (NASA Ames Research Center Moffett Field, CA United States)
Brighenti, F. (Bologna Univ. Italy)
Mathews, W. G. (California Univ. Santa Cruz, CA, United States)
Amblard, A. (Bay Area Environmental Research Inst. Moffett Field, CA, United States)
Riguccini, L. (NASA Ames Research Center Moffett Field, CA United States)