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ON THE RELATIVE SIZES OF PLANETS WITHIN KEPLER MULTIPLE-CANDIDATE SYSTEMS
Open accessAbstract
We present a study of the relative sizes of planets within the multiple-candidate systems discovered with the Kepler mission. We have compared the size of each planet to the size of every other planet within a given planetary system after correcting the sample for detection and geometric biases. We find that for planet pairs for which one or both objects are approximately Neptune-sized or larger, the larger planet is most often the planet with the longer period. No such size–location correlation is seen for pairs of planets when both planets are smaller than Neptune. Specifically, if at least one planet in a planet pair has a radius of ≳ 3 R ⊕ , 68% ± 6% of the planet pairs have the inner planet smaller than the outer planet, while no preferred sequential ordering of the planets is observed if both planets in a pair are smaller than ≲ 3 R ⊕ .
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If outer systems of smaller planets resemble inner ones, they are multi-planet systems of similar mass/size planets.
“If outer systems of smaller planets resemble inner ones, they are multi-planet systems of similar mass/size planets (Ciardi et al. 2013).”
From Origins of Hot Jupiters (2018) · cites this paper as Ciardi et al. 2013
The Discussion (§3.3; page unavailable) says the overall planet-radii ratio is near unity, and the Summary (§4; page unavailable) finds no apparent size hierarchy when both planets are smaller than Neptune. These findings concern radii in observed Kepler multiple-candidate systems; they do not establish similar masses or show that outer systems of smaller planets resemble the inner ones. (LLM, conf=0.78)
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Borucki, W. J., Koch, D., Basri, G., Batalha, N., Brown, T., Caldwell, D., Caldwell, J., Christensen-Dalsgaard, J., Cochran, W. D., DeVore, E., et al. (2010) · Science · doi:10.1126/science.1185402 · Cited by 4,035
Self-citationTwo Earth-sized planets orbiting Kepler-20
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Cited by
Sorted by citations
Dawson, R. I., & Johnson, J. A. (2018) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev-astro-081817-051853 · Cited by 622
Metadata
- Authors
- Ciardi, D. R., Fabrycky, D. C., Ford, E. B., Gautier, T. N., Howell, S. B., Lissauer, J. J., Ragozzine, D., & Rowe, J. F.
- Affiliations
- California Institute of Technology (US)
- University of California, Santa Cruz (US)
- University of Florida (US)
- Jet Propulsion Laboratory (US)
- Ames Research Center (US)
- Corresponding author
- Ciardi, David R.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 2013-01-07
- Volume
- 763
- Issue
- 1
- Pages
- 41
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W1990121949
- Cited by
- 130
- References
- 2
- Citations by year
- 2026: 2 · 2025: 3 · 2024: 3 · 2023: 7 · 2022: 10 · 2021: 12 · 2020: 12 · 2019: 7 · 2018: 35 · 2017: 7 · 2016: 7 · 2015: 7 · 2014: 7 · 2013: 8
- FWCI
- 5.21
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- The Astrophysical Journal (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- CaltechAUTHORS (California Institute of Technology) (submittedVersion)
- Topics
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Stellar, planetary, and galactic studies
- Physical Sciences › Physics and Astronomy › Instrumentation › Astronomy and Astrophysical Research
- Physical Sciences › Earth and Planetary Sciences › Space and Planetary Science › Astro and Planetary Science
- Keywords
- multi-planet systems, Kepler mission, planet pairs, detection bias, orbital period, super-Earths, Neptune-sized planets, planetary system architecture
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