Astronomy and Astrophysics – Astronomy
Scientific paper
May 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21840712l&link_type=abstract
American Astronomical Society, AAS Meeting #218, #407.12; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
We plan to conduct a comprehensive search for uncatalogued galactic open clusters using Pan-STARRS (Panoramic Survey Telescope And Rapid Response System) data in five optical bands (g, r, i, z, y) to a depth of 24 magnitude, about 100 times more sensitive than currently available surveys. A ``star-count'' pipeline has been tested on the 2MASS point-source catalog. In a demonstration region with a sky coverage between galactic longitude 2 < l < 358 degrees and galactic latitude |b| < 50 degrees, we identified 502 cluster candidates. Of these, two are galaxies, 32 (6.3%) are cluster of galaxies, 91 (18.1%) are globular clusters, and 360 (71.7%) are open clusters. Seventeen (3.3%) of our candidates are newly identified. Overall, the detection rate of stellar clusters using our algorithm is about 90%. In addition, we have characterized some of the fundamental parameters of clusters, such as age and distance, using the Pan-STARRS 1 photometry, and the results are in good agreement with previous results.
Chen Wei
Lin Chien-Cheng
Magnier Eugene
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