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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We report the multi-wavelength identification of the X-ray sources found inthe Subaru-XMM-Newton Deep Survey (SXDS) using deep imaging data covering thewavelength range between the far-UV to the mid-IR. We select a primarycounterpart of each X-ray source by applying the likelihood ratio method toR-band, 3.6micron, near-UV, and 24micron source catalogs as well as matchingcatalogs of AGN candidates selected in 1.4GHz radio and i'-band variabilitysurveys. Once candidates of Galactic stars, ultra-luminous X-ray sources in anearby galaxy, and clusters of galaxies are removed there are 896 AGNcandidates in the sample. We conduct spectroscopic observations of the primarycounterparts with multi-object spectrographs in the optical and NIR; 65\% ofthe X-ray AGN candidates are spectroscopically-identified. For the remainingX-ray AGN candidates, we evaluate their photometric redshift with photometricdata in 15 bands. Utilising the multi-wavelength photometric data of the largesample of X-ray selected AGNs, we evaluate the stellar masses, M*, of the hostgalaxies of the narrow-line AGNs. The distribution of the stellar mass isremarkably constant from z=0.1 to 4.0. The relation between M* and 2--10 keVluminosity can be explained with strong cosmological evolution of therelationship between the black hole mass and M*. We also evaluate the scatterof the UV-MIR spectral energy distribution (SED) of the X-ray AGNs as afunction of X-ray luminosity and absorption to the nucleus. The scatter iscompared with galaxies which have redshift and stellar mass distributionmatched with the X-ray AGN. The UV-NIR SEDs of obscured X-ray AGNs are similarto those of the galaxies in the matched sample. In the NIR-MIR range, themedian SEDs of X-ray AGNs are redder, but the scatter of the SEDs of the X-rayAGN broadly overlaps that of the galaxies in the matched sample.

publications of the astronomical society of japan

The Subaru-XMM-Newton Deep Survey (SXDS) VIII.: Multi-wavelength  Identification, Optical/NIR Spectroscopic Properties, and Photometric  Redshifts of X-ray Sources