The Hi-Gal Consortium public database provides an incremental access to compact source catalogues through Vizier (http://vizier.u-strasbg.fr/viz-bin/VizieR-3?-source=J/A%2bA/591/A149&-out.max=50&-out.form=HTML%20Table&-out.add=_r&-out.add=_RAJ,_DEJ&-sort=_r&-oc.form=sexa) as well as through the Vialactea Project web-interface (http://tools.asdc.asi.it/HiGAL.jsp).
It would be a useful scientific tool and a great added value if EsaSky can provide a capability to overlay catalogues on background intensity maps. The interwoven structure of filaments Herschel resolves in large-scale images are well correlated with locations of starless and star forming cores. An overlay functionality could guide scientist to identify 'interesting' areas for follow-up studies. Filtering of overlaid sources based on catalogued observables (colours, photometry, size, shape parameters etc.) could further enhance the science use of such functionality.
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