Artículo
3C 17: The BCG of a Galaxy Cluster at z = 0.22
Madrid, Juan P.; Donzelli, Carlos Jose
; Rodríguez-Ardila, Alberto; Paggi, Alessandro; Massaro, Francesco; Schirmer, Mischa
Fecha de publicación:
10/2018
Editorial:
IOP Publishing
Revista:
Astrophysical Journal Supplement Series
ISSN:
0067-0049
e-ISSN:
1538-4365
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
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.
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Articulos(IATE)
Articulos de INST.DE ASTRONOMIA TEORICA Y EXPERIMENTAL
Articulos de INST.DE ASTRONOMIA TEORICA Y EXPERIMENTAL
Citación
Madrid, Juan P.; Donzelli, Carlos Jose; Rodríguez-Ardila, Alberto; Paggi, Alessandro; Massaro, Francesco; et al.; 3C 17: The BCG of a Galaxy Cluster at z = 0.22; IOP Publishing; Astrophysical Journal Supplement Series; 238; 2; 10-2018; 1-9
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