Photometric and Kinematic Studies of Open Star Clusters I: NGC 581 (M 103)

Details Photometric and Kinematic Studies of Open Star Clusters I: NGC 581 (M 103) Photometric and Kinematic Studies of Open Star Clusters I: NGC 581 (M 103)

1999-08-06

arxiv.org/abs/astro-ph/9908059v1

Astronomy and Astrophysics

Astrophysics

9 pages, 11 figures, accepted for publication in Astronomy & Astrophysics, Main Journal

Scientific paper

We present CCD photometry and a proper motion study of the young open star cluster, NGC 581 (M 103). Fitting isochrones to the colour magnitude diagram, we found an age of 16 +/- 4 Myr and a distance of roughly 3 kpc for this cluster. The proper motion study identifies 77 stars of V=14.5 mag or brighter to be cluster members. We combine membership determination by proper motions and statistical field star subtraction to derive the IMF of the cluster and find a quite steep slope of Gamma=-1.80.

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