Spitzer Observations of the Prototypical Extremely Red Objects HR 10 and LBDS 53W091: Separating Dusty Starbursts from Old Elliptical Galaxies

@article{Stern2006SpitzerOO,
  title={Spitzer Observations of the Prototypical Extremely Red Objects HR 10 and LBDS 53W091: Separating Dusty Starbursts from Old Elliptical Galaxies},
  author={Daniel K. Stern and Ranga Ram Chary and Peter Eisenhardt and Leonidas A. Moustakas},
  journal={The Astronomical Journal},
  year={2006},
  volume={132},
  pages={1405 - 1414}
}
We present Spitzer Space Telescope observations of the well-studied extremely red objects (EROs) HR 10 and LBDS 53W091 from 3.6 to 160 μm. These galaxies are the prototypes of the two primary classes of EROs: dusty starbursts and old, evolved galaxies, respectively. Both galaxies, as well as LBDS 53W069, another example of an old, quiescent galaxy, are well detected out to 8 μm. However, only the dusty starburst HR 10 is detected in the far-infrared. All three EROs have stellar masses of a few… 

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