Near Infrared Imaging of the Proposed z=2 Cluster Behind CL 0939+4713 (Abell 851) | Zendy

J. B. Hutchings | Zendy; T. J. Davidge | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Near Infrared Imaging of the Proposed z=2 Cluster Behind CL 0939+4713 (Abell 851)

Author(s) -

J. B. Hutchings,

T. J. Davidge

Publication year - 1997

Publication title -

publications of the astronomical society of the pacific

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.294

H-Index - 172

eISSN - 1538-3873

pISSN - 0004-6280

DOI - 10.1086/133929

Subject(s) - physics , astrophysics , galaxy , redshift , luminosity , luminous infrared galaxy , population , astronomy , cluster (spacecraft) , galaxy cluster , demography , sociology , computer science , programming language

We have obtained deep J and K' images of a 90 arcsec square field containingthe z=2.0 QSO that is viewed through the z=0.4 rich cluster A851. Brightnessesof individual galaxies are measured from these data, and archival F702W WFPC2images from HST. The results are used to construct 2-colour diagrams,colour-magnitude diagrams, and luminosity functions of galaxies in A851 and thefaint objects discovered by Dressler et al (1993) near the QSO. The QSO faintcompanions appear to form a separate population from other faint galaxies inthe field. Comparisons with the GISSEL models covering redshifts from 0 to 3indicate that (1) the A851 galaxies have ages between 3 and 10 Gyr, and (2) ifthey are at the QSO redshift, the QSO companion galaxies are within 1Gyr ofcessation of star-formation.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research