"The HARPS search for southern extra-solar planets XI. Super-Earths (5 & 8 M_Earth) in a 3-planet system"
S. Udry, X. Bonfils, X. Delfosse, T. Forveille, M. Mayor, C. Perrier, F. Bouchy, C. Lovis, F. Pepe, D. Queloz, J.-L. Bertaux, 2007
A&A 469, L43 (ADS)
"The HARPS search for southern extra-solar planets. VI. A Neptune-mass planet around the nearby M dwarf Gl 581"
X. Bonfils, T. Forveille, X. Delfosse, S. Udry, M. Mayor, C. Perrier, F. Bouchy, F. Pepe, D. Queloz, J.-L. Bertaux, 2005
A&A 443, L15 (ADS)
Gl 581 b announced during the Colloquium "The Tenth Anniversary of 51 Peg b" at Observatoire de Haute-Provence, August the 22nd 2005.
Gl 581 c and d announced on April the 25th 2007 in ESO-PR 22/07
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Extrasolar planet page
Planet Search and Stellar Kinematics group page
Geneva observatory
University of Geneva