The DOI matches its Crossref record; 20 of the 20 references it cites were found in a registry or an index.
A Pair of Resonant Planets Orbiting GJ 876
Open accessAbstract
Precise Doppler measurements during 6 yr from the Lick and Keck observatories reveal two planets orbiting GJ 876 (M4V). The orbital fit yields companion masses of M sin i = 0.56 and 1.89 M J , orbital periods of P = 30.1 and 61.0 days, semimajor axes of a = 0.13 and 0.21 AU, and eccentricities of e = 0.28 and 0.10, respectively. The orbital periods are nearly in the ratio of 2 : 1, unprecedented among major planets but common among moons and asteroids. Moreover, the axes of the elliptical orbits appear to be nearly aligned. The inner companion was not recognized previously owing to the 2 : 1 ratio of periods, which allowed its signature to masquerade as added orbital eccentricity of the outer planet. Dynamical simulations show that the system is stable within a subset of the observed orbital parameters. The stability may be provided by a mean-motion resonance and the apparent alignment of the major axes. These planets pose unsolved questions about their formation and dynamical evolution, which brought them within 0.08 AU of each other and locked them in resonance.
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Cites
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ARCHITECTURE AND DYNAMICS OF KEPLER 'S CANDIDATE MULTIPLE TRANSITING PLANET SYSTEMS
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Self-citationPlanet-Disk Interaction and Orbital Evolution
Kley, W., & Nelson, R. P. (2012) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev-astro-081811-125523 · Cited by 722
The HARPS search for southern extra-solar planets: XXXI. The M-dwarf sample
Bonfils, X., Delfosse, X., Udry, S., Forveille, T., Mayor, M., Perrier, C., Bouchy, F., Gillon, M., Lovis, C., Pepe, F., et al. (2013) · Astronomy & Astrophysics · doi:10.1051/0004-6361/201014704 · Cited by 653
Dynamics and Origin of the 2 : 1 Orbital Resonances of the GJ 876 Planets
Lee, M. H., & Peale, S. J. (2002) · The Astrophysical Journal · doi:10.1086/338504 · Cited by 538
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Metadata
- Authors
- Marcy, G. W., Butler, R. P., Fischer, D., Vogt, S. S., Lissauer, J. J., & Rivera, E. J.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 2001-07-20
- Volume
- 556
- Issue
- 1
- Pages
- 296-301
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W2024785675
- Cited by
- 393
- References
- 20
- FWCI
- 18.12
- Type
- journal article
- Language
- en
- Open access
- bronze
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