TitleSpitzer Observations of Passive and Star-Forming Early-Type Galaxies: An Infrared Color-Color Sequence
AuthorsTemi, Pasquale; Brighenti, Fabrizio; Mathews, William G.

2009ApJ...707..890T   Search ADS ↗

AbstractWe describe the infrared properties of a large sample of early-type galaxies, comparing data from the Spitzer archive with Ks-band emission from the Two Micron All Sky Survey. While most representations of this data result in correlations with large scatter, we find a remarkably tight relation among colors formed by ratios of luminosities in Spitzer-Multiband Imaging Photometer bands (24, 70, and 160 μm) and the Ks ...

225 Objects    Search NED ↙