In: Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 50, no. 2
V. Pavlík
Details:
Year, pages: 2020, 456 - 460
Language: eng
Keywords:
methods: numerical, data analysis, star clusters: individual (ONC), stars: formation, binaries
Original source URL: http://www.astro.sk/caosp/Eedition/Abstracts/2020/Vol_50/No_2/pp456-460_abstract.html
About article:
Observational results of young star-forming regions suggest that star clusters are completely mass segregated at birth. As a star cluster evolves dynamically, these initial conditions are gradually lost. For star clusters with single stars only and a canonical IMF, it has been suggested that traces of these initial conditions vanish at τv between 3 and 3.5 half-mass relaxation times. Here, by means of numerical models, we investigate the role of the primordial binary population on the loss of primordial mass segregation. We found that τv does not depend on the binary star distribution, yielding 3 < τv / trh < 3.5. We also conclude that the completely mass segregated clusters, even with binaries, are more compatible with the present-day ONC than the non-segregated ones.
How to cite:
ISO 690:
Pavlík, V. 2020. Primordial mass segregation of star clusters: The role of binary stars. In Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 50, no.2, pp. 456-460. 1335-1842. DOI: https://doi.org/10.31577/caosp.2020.50.2.456
APA:
Pavlík, V. (2020). Primordial mass segregation of star clusters: The role of binary stars. Contributions of the Astronomical Observatory Skalnaté Pleso, 50(2), 456-460. 1335-1842. DOI: https://doi.org/10.31577/caosp.2020.50.2.456
About edition:
Publisher: Astronomical Institute, Slovak Academy of Sciences
Published: 1. 3. 2020
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