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Journal Article

3C 17: The BCG of a Galaxy Cluster at z = 0.22

MPS-Authors

Madrid,  Juan P.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Donzelli,  Carlos J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Rodríguez-Ardila,  Alberto
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Paggi,  Alessandro
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Massaro,  Francesco
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Schirmer,  Mischa
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

External Resource

https://ui.adsabs.harvard.edu/abs/2018ApJS..238...31M
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Citation

Madrid, J. P., Donzelli, C. J., Rodríguez-Ardila, A., Paggi, A., Massaro, F., & Schirmer, M. (2018). 3C 17: The BCG of a Galaxy Cluster at z = 0.22. The Astrophysical Journal Supplement Series, 238.


Cite as: https://hdl.handle.net/21.11116/0000-0005-CC5E-D
Abstract
Gemini Multi Object Spectrograph medium-resolution spectra and photometric data of 39 objects in the field of the radio galaxy 3C 17 are presented. Based on the new data, a previously uncataloged cluster of galaxies is identified at a mean redshift of z = 0.220 ± 0.003, a projected virial radius of 0.37 Mpc, and a velocity dispersion of σ v = 821 ± 171 km s-1. The brightest member of this cluster is 3C 17, with M r = -22.45 mag. The surface brightness profile of 3C 17 is best fit with two components (Exponential + Sérsic) characteristic of brightest cluster galaxies. The spectrum of 3C 17 is dominated by broad emission lines Hα + N[ II] and Hβ + [O III]. Analysis of Chandra data shows extended emission around the cluster core that supports the existence of hot gas cospatial with 3C 17. The discovery of a cluster of galaxies around 3C 17 better explains the sharply bent morphology of the radio jet given that it propagates through a dense intracluster medium.