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Observational signs of planet infall and Roche lobe overflow outward migration

Published online by Cambridge University Press:  10 November 2011

Stuart F. Taylor  and
Ing-Guey Jiang
Stuart F. Taylor
Affiliation:
Institute of Astronomy and Department of Physics, National Tsing Hua University, 101 Section 2 Kuang Fu Road, Hsinchu, Taiwan30013 email: astrostuart@gmail.com, jiang@phys.nthu.edu.tw Global Telescope Science Group, Los Angeles, California, USA Eureka Scientific, Inc., Oakland, California, USA
Ing-Guey Jiang
Affiliation:
Institute of Astronomy and Department of Physics, National Tsing Hua University, 101 Section 2 Kuang Fu Road, Hsinchu, Taiwan30013 email: astrostuart@gmail.com, jiang@phys.nthu.edu.tw
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Abstract

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Outward migration of planets due to Roche lobe overflow may play an important role in producing the presently observed distribution of planet parameters. We suggest that many of the currently known short period planets may have already migrated into the Roche distance from the star, and then deposited at their current semi-major axes by being migrated outwards due to angular momentum transfer from an episode of Roche lobe overflow (RLO). This RLO outward migration (RLOOM) could be sustained in the region where planetary radius increases with decreasing mass. We are modeling how RLOOM may leave what kind of planet parameter statistics. This modeling seeks to predict what observable signs of RLOOM there may be. Overflow of planetary mass may leave behind characteristic hot dust and gas as well as produce luminous signatures.

Keywords

planetary systemsplanetary systems: formationstars: rotationstars: statisticsstars: evolutionstars: variables: other
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 6 , Symposium S276: The Astrophysics of Planetary Systems: Formation, Structure, and Dynamical Evolution , October 2010 , pp. 513 - 514
Copyright
Copyright © International Astronomical Union 2011

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