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| Paper: |
Search for New Open Clusters in Huge Catalogues |
| Volume: |
351, Astronomical Data Analysis Software and Systems XV |
| Page: |
240 |
| Authors: |
Zolotukhin, I.; Koposov, S.; Glushkova, E. |
| Abstract: |
Current catalogues (lists indeed) of open clusters are simply heterogeneous and incomplete compilations. No attempts to search for open clusters through huge photometric catalogues using an homogeneous approach have been done so far.
We have developed a method based on the analysis of star densities. Our algorithm finds star density peaks and then builds the colormagnitude diagram. We exploit the fact that only stars lying on the isochrone show a density peak whereas field stars show a flat distribution. An automatic procedure eliminates occasional density peaks and obtains the isochrone and the geometrical parameters of the survived candidates (coordinates, size, distance, age and color excess).
A preliminary study of 150 sq. degrees in the Galaxy Anticentre region yielded 10 new clusters. The system will allow us to build, for the first time, an homogeneous catalogue of open clusters on an all-sky basis. Although we have started with 2MASS data, it will be possible to apply the automated pipeline on any multicolor catalogue provided that a VOcompliant way of access (e.g. ADQL + SkyNode) is implemented (SDSS, etc.). |
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