THE NATURE OF LINER-LIKE EMIssION IN RED GALAXIES

• Published in: The Astrophysical journal Vol. 747; no. 1; pp. 1 - 25
• Main Authors: Yan, Renbin, Blanton, Michael R
• Format: Journal Article
• Language: English
• Published: United States 01.03.2012
• Subjects: Active galactic nuclei; Apertures; ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; BOLOMETERS; BRIGHTNESS; Density; Emission spectroscopy; GALAXIES; GALAXY NUCLEI; IONIZATION; LUMINOSITY; PHOTON EMISSION; Pollution sources; SPECTROSCOPY; STARS

Passive red galaxies frequently contain warm ionized gas and have spectra similar to low-ionization nuclear emission-line regions (LINERs). Here we investigate the nature of the ionizing sources powering this emission, by comparing nuclear spectroscopy from the Palomar survey with larger aperture da...