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 results of a study of Planck Sunyaev-Zel'dovich effect (SZE)selected galaxy cluster candidates using the Panoramic Survey Telescope & RapidResponse System (Pan-STARRS) imaging data. We first examine 150 Planckconfirmed galaxy clusters with spectroscopic redshifts to test our algorithmfor identifying optical counterparts and measuring their redshifts; ourredshifts have a typical accuracy of $\sigma_{z/(1+z)} \sim 0.022$ for thissample. Using 60 random sky locations, we estimate that our chance ofcontamination through a random superposition is ~ 3 per cent. We then examinean additional 237 Planck galaxy cluster candidates that have no redshift in thesource catalogue. Of these 237 unconfirmed cluster candidates we are able toconfirm 60 galaxy clusters and measure their redshifts. A further 83 candidatesare so heavily contaminated by stars due to their location near the Galacticplane that we do not attempt to identify counterparts. For the remaining 94candidates we find no optical counterpart but use the depth of the Pan-STARRS1data to estimate a redshift lower limit $z_{\text{lim}(10^{15})}$ beyond whichwe would not have expected to detect enough galaxies for confirmation. Scalingfrom the already published Planck sample, we expect that $\sim$12 of theseunconfirmed candidates may be real clusters.

Optical Confirmation and Redshift Estimation of the Planck Cluster Candidates overlapping the Pan-STARRS Survey