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Effect of Prior Information on Bayesian Membership Calculations for Nearby Young Star Associations

Published online by Cambridge University Press:  27 January 2016

Jinhee Lee  and
Inseok Song
Jinhee Lee
Affiliation:
Department of Physics and Astronomy, The University of Georgia, Athens, GA 30602-2451 email: jinhee@uga.edu, song@uga.edu
Inseok Song
Affiliation:
Department of Physics and Astronomy, The University of Georgia, Athens, GA 30602-2451 email: jinhee@uga.edu, song@uga.edu
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Abstract

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We present a refined moving group membership diagnostics scheme based on Bayesian inference. Compared to the BANYAN II method, we improved the calculation by updating bona fide members of a moving group, field star treatment, and uniform spatial distribution of moving group members. Here, we present the detailed description of our method and the new results for Bayesian membership calculation. Comparison of our method with BANYAN II shows probability differences up to ~90%. We conclude that more cautious consideration is needed in moving group membership based on Bayesian inference.

Keywords

open clusters and associationsstars: kinematics and dynamicsstars: statisticsstars: pre-main-sequence
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 10 , Issue S314: Young Stars & Planets Near the Sun , November 2015 , pp. 67 - 68
Copyright
Copyright © International Astronomical Union 2016 

References

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