PACS spectrum of the active galaxy Mrk 231

Date: 26 November 2009
Satellite: Herschel
Copyright: ESA and the PACS consortium; background image: NASA, ESA, the Hubble Heritage Team (STScI/AURA)-ESA/Hubble Collaboration and A. Evans (University of Virginia, Charlottesville/NRAO/Stony Brook University)
Last Update: 1 September 2019