An Earth-sized planet with an Earth-like density
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An Earth-sized planet with an Earth-like density. / Pepe, Francesco; Cameron, Andrew Collier; Latham, David W.; Molinari, Emilio; Udry, Stéphane; Bonomo, Aldo S.; Buchhave, Lars A.; Charbonneau, David; Cosentino, Rosario; Dressing, Courtney D.; Dumusque, Xavier; Figueira, Pedro; Fiorenzano, Aldo F. M.; Gettel, Sara; Harutyunyan, Avet; Haywood, Raphaëlle D.; Horne, Keith; Lopez-Morales, Mercedes; Lovis, Christophe; Malavolta, Luca; Mayor, Michel; Micela, Giusi; Motalebi, Fatemeh; Nascimbeni, Valerio; Phillips, David; Piotto, Giampaolo; Pollacco, Don; Queloz, Didier; Rice, Ken; Sasselov, Dimitar; Segransan, Damien; Sozzetti, Alessandro; Szentgyorgyi, Andrew; Watson, Christopher A.
In: Nature, Vol. 503, No. 7476, 21.11.2013, p. 377-380.Research output: Contribution to journal › Letter › Research › peer-review
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TY - JOUR
T1 - An Earth-sized planet with an Earth-like density
AU - Pepe, Francesco
AU - Cameron, Andrew Collier
AU - Latham, David W.
AU - Molinari, Emilio
AU - Udry, Stéphane
AU - Bonomo, Aldo S.
AU - Buchhave, Lars A.
AU - Charbonneau, David
AU - Cosentino, Rosario
AU - Dressing, Courtney D.
AU - Dumusque, Xavier
AU - Figueira, Pedro
AU - Fiorenzano, Aldo F. M.
AU - Gettel, Sara
AU - Harutyunyan, Avet
AU - Haywood, Raphaëlle D.
AU - Horne, Keith
AU - Lopez-Morales, Mercedes
AU - Lovis, Christophe
AU - Malavolta, Luca
AU - Mayor, Michel
AU - Micela, Giusi
AU - Motalebi, Fatemeh
AU - Nascimbeni, Valerio
AU - Phillips, David
AU - Piotto, Giampaolo
AU - Pollacco, Don
AU - Queloz, Didier
AU - Rice, Ken
AU - Sasselov, Dimitar
AU - Segransan, Damien
AU - Sozzetti, Alessandro
AU - Szentgyorgyi, Andrew
AU - Watson, Christopher A.
PY - 2013/11/21
Y1 - 2013/11/21
N2 - Recent analyses(1-4) of data from the NASA Kepler spacecraft(5) have established that planets with radii within 25 per cent of the Earth's (R-circle plus) are commonplace throughout the Galaxy, orbiting at least 16.5 per cent of Sun-like stars(1). Because these studies were sensitive to the sizes of the planets but not their masses, the question remains whether these Earth-sized planets are indeed similar to the Earth in bulk composition. The smallest planets for which masses have been accurately determined(6,7) are Kepler-10b (1.42R(circle plus)) and Kepler-36b (1.49R(circle plus)), which are both significantly larger than the Earth. Recently, the planet Kepler-78b was discovered(8) and found to have a radius of only 1.16R(circle plus). Here we report that the mass of this planet is 1.86 Earth masses. The resulting mean density of the planet is 5.57 g cm(-3), which is similar to that of the Earth and implies a composition of iron and rock.
AB - Recent analyses(1-4) of data from the NASA Kepler spacecraft(5) have established that planets with radii within 25 per cent of the Earth's (R-circle plus) are commonplace throughout the Galaxy, orbiting at least 16.5 per cent of Sun-like stars(1). Because these studies were sensitive to the sizes of the planets but not their masses, the question remains whether these Earth-sized planets are indeed similar to the Earth in bulk composition. The smallest planets for which masses have been accurately determined(6,7) are Kepler-10b (1.42R(circle plus)) and Kepler-36b (1.49R(circle plus)), which are both significantly larger than the Earth. Recently, the planet Kepler-78b was discovered(8) and found to have a radius of only 1.16R(circle plus). Here we report that the mass of this planet is 1.86 Earth masses. The resulting mean density of the planet is 5.57 g cm(-3), which is similar to that of the Earth and implies a composition of iron and rock.
U2 - 10.1038/nature12768
DO - 10.1038/nature12768
M3 - Letter
C2 - 24172902
VL - 503
SP - 377
EP - 380
JO - Nature
JF - Nature
SN - 0028-0836
IS - 7476
ER -
ID: 119415734