Mass segregation in the young open cluster NGC 2547
Abstract
We present a study of mass segregation of the young (20-35 Myr isochronal age) open cluster NGC 2547. We find good evidence that mass segregation exists in NGC 2547 down to 3 Msolar, and weak evidence for mass segregation down to 1 Msolar. Theoretical models of an initially unsegregated model of NGC 2547 using the NBODY2 code show weaker mass segregation, implying that at least some of the observed mass segregation has a primordial origin. We also report the discovery of three possible escaped cluster members, which share the proper motion and colours of the cluster, but lie nearly a degree from the cluster centre.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- November 2003
- DOI:
- 10.1046/j.1365-2966.2003.07035.x
- arXiv:
- arXiv:astro-ph/0308320
- Bibcode:
- 2003MNRAS.345.1205L
- Keywords:
-
- stars: formation;
- stars: pre-main-sequence;
- open clusters and associations: individual: NGC 2547;
- Astrophysics
- E-Print:
- 7 pages, 7 figures. To appear in Monthly Notices (in press)