Clustering and light profiles of galaxies in the environment of 20 ultra-steep-spectrum radio sources

Carlos G. Bornancini, Héctor J. Martínez, Diego G. Lambas, Wim De Vries, Wil Van Breugel, Carlos De Breuck, Dante Minniti

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

7 Citas (Scopus)

Resumen

We have analyzed galaxy properties in the neighborhood of 20 ultra-steep-spectrum (USS) radio sources taken from the Westerbork in the Southern Hemisphere (WISH) catalog of De Breuck and coworkers. Galaxies in these USS fields were identified in deep observations that were carried out in the K′ band using the OSIRIS imager at the CTIO 4 m telescope. We find a statistically significant signal of clustering around our sample of USS sources. The angular extension of the detected USS source-galaxy clustering is θ c ∼ 20″, corresponding to a spatial scale of ∼120 h -1 kpc, assuming the sources are at z ∼ 1 in an Ω m = 0.3, Ω A = 0.7 model universe. These results are in agreement with those obtained by Best for radio galaxy-galaxy correlation, and Best and coworkers for radio-loud AGN-galaxy correlation. We have also analyzed the light distribution of the galaxies by fitting Sérsic's law profiles. Our results show no significant dependence of the galaxy shape parameters on the projected distance to the USS source.

Idioma originalInglés
Páginas (desde-hasta)679-685
Número de páginas7
PublicaciónAstronomical Journal
Volumen127
N.º2 1778
DOI
EstadoPublicada - feb 2004

Áreas temáticas de ASJC Scopus

  • Astronomía y astrofísica
  • Ciencias planetarias y espacial

Huella

Profundice en los temas de investigación de 'Clustering and light profiles of galaxies in the environment of 20 ultra-steep-spectrum radio sources'. En conjunto forman una huella única.

Citar esto