The Parallelism between Galaxy Clusters and Early-type Galaxies. I. The Light and Mass Profiles

@article{DOnofrio2020ThePB,
  title={The Parallelism between Galaxy Clusters and Early-type Galaxies. I. The Light and Mass Profiles},
  author={Mauro D’Onofrio and Mauro Sciarratta and Stefano Cariddi and Paola Marziani and Cesare Chiosi},
  journal={The Astrophysical Journal},
  year={2020},
  volume={875}
}
We have analyzed the parallelism between the properties of galaxy clusters and early-type galaxies (ETGs) by looking at the similarity between their light profiles. We find that the equivalent luminosity profiles of all these systems in the V band, once normalized to the effective radius Re and shifted in surface brightness, can be fitted by the Sérsic law and superposed with a small scatter (≤0.3 mag). By grouping objects in different classes of luminosity, the average profile of each class… 
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