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Obliquity variations of terrestrial planets in habitable zones
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- Atobe Keiko
- Tokyo Institute of Technology
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- Ida Shigeru
- Tokyo Institute of Technology
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- Ito Takashi
- National Astronomical Observatory of Japan
Bibliographic Information
- Other Title
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- 系外地球型惑星の自転軸傾斜角変動
Description
We have investigated obliquity variations of hypothetical terrestrial planets in habitable zones (HZs) in extrasolar planetary systems. Using analytical expressions, we have shown that the terrestrial planets in a HZ tend to be in spin-orbit resonance when the giant planet is located at where they can keep the orbits of the terrestrial planets marginally stable. We found that the systems with both small obliquity variations and stable orbits in their HZs are only 1/5 of the known extrasolar planetary systems. However, retrograde spin, or a large and/or close satellite might be able to reduce the obliquity variation.
Journal
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- Abstracts for fall meeting of the Japanese Society for Planetary Science
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Abstracts for fall meeting of the Japanese Society for Planetary Science 2003f (0), 57-57, 2003
THE JAPANESE SOCIETY FOR PLANETARY SCIENCES
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Details 詳細情報について
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- CRID
- 1390282680531990400
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- NII Article ID
- 130005011474
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed