text:   clusters in the halo of Centaurus A",7,"['Today our new paper on how we can find globular clusters with the help of @ESAGaia is out on the arxiv! with @anilcseth @caprastro &amp; @sand_dave <LINK>', '@ESAGaia @anilcseth @caprastro @sand_dave We tried to find globular clusters in Centaurus A by using colour and astrometric excess factors in Gaia DR2. We realized that star clusters in nearby galaxies do not appear like standard point sources in Gaia. https://t.co/nkpMAxKJZ9', '@ESAGaia @anilcseth @caprastro @sand_dave Normally these excess factors are used as a quality assessment tool in Gaia to purge out bad sources!', '@ESAGaia @anilcseth @caprastro @sand_dave We have followe up a few candidates, and identified 5 brand new GCs in the outskirts of CenA. They actually are clearly visible as star clusters in good seeing imaging but we had not found them because the outer Halo of Gaia spans several square degrees on the sky. https://t.co/xDCaSyUi7X', '@ESAGaia @anilcseth @caprastro @sand_dave These newly confirmed clusters (Blue datapoints) are now the record holders for the three most distant known GCs in CenA! This shows the power of this Gaia method to identify good candidates in the distant outskirts. https://t.co/YmA7KTnz3X', '@ESAGaia @anilcseth @caprastro @sand_dave And we expect that this @ESAGaia method is applicable to find bright GCs in most Local Volume galaxies out to 25Mpc. Especially in those sparse outer Halos of galaxies! https://t.co/8xVH1LvTF3', '@ESAGaia @anilcseth @caprastro @sand_dave On top of that we also show that the excess factors are directly correlated to the physical size of the GCs. Meaning that you can use the excess factors to get a rough size estimate of their sizes without the need for high-resolution HST imaging. https://t.co/qlkSS1SIHx']",20,01,1649