Abstract
Abstract In statistical studies of open clusters, great attention should be paid to possible field contamination. The importance of correct handling of membership probabilities in the calculation of the virial mass of a cluster is emphasized. Our analysis shows that reasonable virial mass can be obtained only if we use only those member stars with large membership probabilities. Our re-calculation for M11 gives a virial mass of 5094 μ ⊙, in good agreement with the latest result of 4671 μ ⊙, directly derived from observed luminosities, giving a virial coefficient of 0.9.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
