Towards absolute scales of radii and masses of open clusters

Details Towards absolute scales of radii and masses of open clusters Towards absolute scales of radii and masses of open clusters

2007-02-20

arxiv.org/abs/astro-ph/0702517v1

Astronomy and Astrophysics

Astrophysics

11 pages, 7 figures, accepted for publication in Astronomy & Astrophysics

Scientific paper

10.1051/0004-6361:20077073

Aims: In this paper we derive tidal radii and masses of open clusters in the nearest kiloparsecs around the Sun. Methods: For each cluster, the mass is estimated from tidal radii determined from a fitting of three-parametric King's profiles to the observed integrated density distribution. Different samples of members are investigated. Results: For 236 open clusters, all contained in the catalogue ASCC-2.5, we obtain core and tidal radii, as well as tidal masses. The distributions of the core and tidal radii peak at about 1.5 pc and 7 - 10 pc, respectively. A typical relative error of the core radius lies between 15% and 50%, whereas, for the majority of clusters, the tidal radius was determined with a relative accuracy better than 20%. Most of the clusters have tidal masses between 50 and 1000 $m_\odot$, and for about half of the clusters, the masses were obtained with a relative error better than 50%.

Affiliated with

Also associated with

No associations

Rating

Towards absolute scales of radii and masses of open clusters does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Towards absolute scales of radii and masses of open clusters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Towards absolute scales of radii and masses of open clusters will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-382929