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

Joerg Sanner·Michael Geffert·Jens Brunzendorf·Juergen Schmoll
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Abstract

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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Joerg Sanner, Michael Geffert, Jens Brunzendorf, Juergen Schmoll. 1999-08-06. Photometric and Kinematic Studies of Open Star Clusters I: NGC 581 (M 103). https://arxiv.org/abs/astro-ph/9908059

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