English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We have conducted a deep multi-color imaging survey of 0.2 degrees^2 centeredon the Hubble Deep Field North (HDF-N). We shall refer to this region as theHawaii-HDF-N. Deep data were collected in U, B, V, R, I, and z' bands over thecentral 0.2 degrees^2 and in HK' over a smaller region covering the ChandraDeep Field North (CDF-N). The data were reduced to have accurate relativephotometry and astrometry across the entire field to facilitate photometricredshifts and spectroscopic followup. We have compiled a catalog of 48,858objects in the central 0.2 degrees^2 detected at 5 sigma significance in a 3"aperture in either R or z' band. Number counts and color-magnitude diagrams arepresented and shown to be consistent with previous observations. Using colorselection we have measured the density of objects at 3<z<7. Our multi-colordata indicates that samples selected at z>5.5 using the Lyman break techniquesuffer from more contamination by low redshift objects than suggested byprevious studies.

A Deep Wide-Field, Optical, and Near-Infrared Catalog of a Large Area around the Hubble Deep Field North