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The HARPS search for southern extra-solar planets: XVIII. An Earth-mass planet in the GJ 581 planetary system
Open accessAbstract
The GJ 581 planetary system is already known to harbour three planets, including two super-Earth planets that straddle its habitable zone. We report the detection of an additional planet – GJ 581e – with a minimum mass of 1.9 . With a period of 3.15 days, it is the innermost planet of the system and has a ~5% transit probability. We also correct our previous confusion about the orbital period of GJ 581d (the outermost planet) with a one-year alias, benefitting from an extended time span and many more measurements. The revised period is 66.8 days, and positions the semi-major axis inside the habitable zone of the low mass star. The dynamical stability of the 4-planet system imposes an upper bound on the orbital plane inclination. The planets cannot be more massive than approximately 1.6 times their minimum mass.
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Cites
Queloz, D., Henry, G. W., Sivan, J. P., Baliunas, S. L., Beuzit, J. L., Donahue, R. A., Mayor, M., Naef, D., Perrier, C., & Udry, S. (2001) · Astronomy and Astrophysics · doi:10.1051/0004-6361:20011308 · Cited by 913 · cited 1×
“That apparent Doppler shift can easily happen to mimic a Keplerian orbit (e.g. Queloz et al. 2001; Bonfils et al. 2007).”
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Cited by
A super-Earth transiting a nearby low-mass star
Charbonneau, D., Berta, Z. K., Irwin, J., Burke, C. J., Nutzman, P., Buchhave, L. A., Lovis, C., Bonfils, X., Latham, D. W., Udry, S., et al. (2009) · Nature · doi:10.1038/nature08679 · Cited by 797
Self-citationThe 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
Self-citationAdibekyan, V. Z., Sousa, S. G., Santos, N. C., Delgado Mena, E., González Hernández, J. I., Israelian, G., Mayor, M., & Khachatryan, G. (2012) · Astronomy & Astrophysics · doi:10.1051/0004-6361/201219401 · Cited by 586
Self-citationA dynamically-packed planetary system around GJ 667C with three super-Earths in its habitable zone
Anglada-Escudé, G., Tuomi, M., Gerlach, E., Barnes, R., Heller, R., Jenkins, J. S., Wende, S., Vogt, S. S., Paul Butler, R., Reiners, A., et al. (2013) · Astronomy & Astrophysics · doi:10.1051/0004-6361/201321331 · Cited by 381
State of the Field: Extreme Precision Radial Velocities
Fischer, D. A., Anglada-Escude, G., Arriagada, P., Baluev, R. V., Bean, J. L., Bouchy, F., Buchhave, L. A., Carroll, T., Chakraborty, A., Crepp, J. R., et al. (2016) · Publications of the Astronomical Society of the Pacific · doi:10.1088/1538-3873/128/964/066001 · Cited by 367
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Metadata
- Authors
- Mayor, M., Bonfils, X., Forveille, T., Delfosse, X., Udry, S., Bertaux, J.-L., Beust, H., Bouchy, F., Lovis, C., Pepe, F., Perrier, C., Queloz, D., & Santos, N. C.
- Venue
- Astronomy & Astrophysics
- Publisher
- EDP Sciences
- Published
- 2009-09-24
- Volume
- 507
- Issue
- 1
- Pages
- 487-494
- ISSN
- 0004-6361 (ISSN-L)
- 1432-0746
- OpenAlex
- W2167538092
- Cited by
- 400
- References
- 1
- FWCI
- 35.47
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Mayor, M., Bonfils, X., Forveille, T., Delfosse, X., Udry, S., Bertaux, J.-L., Beust, H., Bouchy, F., Lovis, C., Pepe, F., Perrier, C., Queloz, D., & Santos, N. C. (2009). The HARPS search for southern extra-solar planets: XVIII. An Earth-mass planet in the GJ 581 planetary system. Astronomy & Astrophysics. https://doi.org/10.1051/0004-6361/200912172
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