Photometric and kinematic studies of open star clusters I. NGC 581 (M 103)

Authors
Sanner, J Geffert, M Brunzendorf, J Schmoll, J
Citation
J. Sanner et al., Photometric and kinematic studies of open star clusters I. NGC 581 (M 103), ASTRON ASTR, 349(2), 1999, pp. 448-456
Citations number
21
Categorie Soggetti
Space Sciences
Journal title
ASTRONOMY AND ASTROPHYSICS
ISSN journal
00046361 → ACNP
Volume
349
Issue
2
Year of publication
1999
Pages
448 - 456
Database
ISI
SICI code
0004-6361(199909)349:2<448:PAKSOO>2.0.ZU;2-A
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 diagra m, 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 br ighter to be cluster members. We combine membership determination by proper motions and statistical field star subtraction to derive the IMF of the cl uster and find a quite steep slope of r = -1.80.