Authors
Abstract
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-parameter King 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_⊙, and for about half of the clusters, the masses were obtained with a relative error better than 50%. Full Table 2 is only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/468/151
Details
| Publication | Astronomy and Astrophysics, Volume 468, Issue 1, June II 2007, pp.151-161 |
| Publication Date | June 2007 |
| DOI | |
| arXiv | arXiv:astro-ph/0702517 |
| Bibcode | 2007A&A...468..151P |
| Collection | |
| Keywords | |
| UAT Keyword (generated)BETA | |
| E-Print Comment(s) | 11 pages, 7 figures, accepted for publication in Astronomy & Astrophysics; doi:10.1051/0004-6361:20077073 |