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

STREAMFINDER is a new algorithm that we have built to detect stellar streamsin an automated and systematic way in astrophysical datasets that possess anycombination of positional and kinematic information. In Paper I, we introducedthe methodology and the workings of our algorithm and showed that it is capableof detecting ultra-faint and distant halo stream structures containing as fewas $\sim 15$ members ($\Sigma_{\rm G} \sim 33.6\, {\rm mag \, arcsec^{-2}}$) inthe Gaia dataset. Here, we test the method with real proper motion data fromthe Pan-STARRS1 survey, and by selecting targets down to $r_{0}=18.5$ mag weshow that it is able to detect the GD-1 stellar stream, whereas the structureremains below a useful detection limit when using a Matched Filter technique.The radial velocity solutions provided by STREAMFINDER for GD-1 candidatemembers are found to be in good agreement with observations. Furthermore, ouralgorithm detects a $\sim 40^{\deg}$ long structure approximately parallel toGD-1, and which fans out from it, possibly a sign of stream-fanning due to thetriaxiality of the Galactic potential. This analysis shows the promise of thismethod for detecting and analysing stellar streams in the upcoming Gaia DR2catalogue.

STREAMFINDER II: A possible fanning structure parallel to the GD-1 stream in Pan-STARRS1