Unresolved Binaries and Galactic Clusters' Mass Estimates
Astrophysical Journal, ISSN: 1538-4357, Vol: 874, Issue: 2
2019
- 16Citations
- 10Captures
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Article Description
Binary stars are present in all stellar systems, yet their role is far from being fully understood. We investigate the effect of unresolved binaries in the derivation of open clusters' mass by star counts. We start from the luminosity functions of five open clusters: IC 2714, NGC 1912, NGC 2099, NGC 6834, and NGC 7142. Luminosity functions are obtained via star counts extracted from the 2MASS database. The fraction of binaries is considered to be independent of stellar magnitude. We take into account different assumptions for the binary mass ratio distribution and assign binary masses using the so-called luminosity-limited pairing method and Monte-Carlo simulations. We show that cluster masses increase when binary stars are appropriately taken into account.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85064454144&origin=inward; http://dx.doi.org/10.3847/1538-4357/ab08e5; https://iopscience.iop.org/article/10.3847/1538-4357/ab08e5; https://dx.doi.org/10.3847/1538-4357/ab08e5; https://validate.perfdrive.com/9730847aceed30627ebd520e46ee70b2/?ssa=85e3e225-11a3-4419-a29b-3aff9bca4415&ssb=03886271997&ssc=https%3A%2F%2Fiopscience.iop.org%2Farticle%2F10.3847%2F1538-4357%2Fab08e5&ssi=63b13360-cnvj-4626-9326-df30ef8044ac&ssk=botmanager_support@radware.com&ssm=630955432798264599290142201883979850&ssn=e3c31a04d16d99bb202e21916be786b121260900c3c4-8990-4f21-ae5e20&sso=e2ba6f8c-bc564dd29dea7da5390cfc9c499d401e61635c092840a714&ssp=81183231251726568063172713778074419&ssq=21535245495791848404829239756019037733469&ssr=NTIuMy4yMTcuMjU0&sst=com.plumanalytics&ssu=&ssv=&ssw=&ssx=eyJyZCI6ImlvcC5vcmciLCJ1em14IjoiN2Y5MDAwMGMxZDc2YmItMzk2MS00N2VjLTlkZGItNjdmYTVhZTY2ODdlOS0xNzI2NTI5MjM5NDUzNjI1NzE3NzY0LTU1ZmY4N2UxYjdlN2MwYmE5Mjg3MDIiLCJfX3V6bWYiOiI3ZjYwMDBkNzYzNGE3Ni05ZTRkLTRjMmMtYjJhMC1mYzAzNGMyZjE1MjkxNzI2NTI5MjM5NDUzNjI1NzE3NzY0LTE0MDBiZWM5ZDJiNjc5Mjk5Mjg3OTgifQ==
American Astronomical Society
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