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The Kepler-10 planetary system revisited by HARPS-N:a hot rocky world and a solid Neptune-mass planet

Authors :
Dumusque, Xavier
Bonomo, Aldo S.
Haywood, Raphaelle D.
Malavolta, Luca
Segransan, Damien
Buchhave, Lars A.
Cameron, Andrew Collier
Latham, David W.
Molinari, Emilio
Pepe, Francesco
Udry, Stephane
Charbonneau, David
Cosentino, Rosario
Dressing, Courtney D.
Figueira, Pedro
Fiorenzano, Aldo F. M.
Gettel, Sara
Harutyunyan, Avet
Horne, Keith
Lopez-Morales, Mercedes
Lovis, Christophe
Mayor, Michel
Micela, Giusi
Motalebi, Fatemeh
Nascimbeni, Valerio
Phillips, David F.
Piotto, Giampaolo
Pollacco, Don
Queloz, Didier
Rice, Ken
Sasselov, Dimitar
Sozzetti, Alessandro
Szentgyorgyi, Andrew
Watson, Chris
Dumusque, Xavier
Bonomo, Aldo S.
Haywood, Raphaelle D.
Malavolta, Luca
Segransan, Damien
Buchhave, Lars A.
Cameron, Andrew Collier
Latham, David W.
Molinari, Emilio
Pepe, Francesco
Udry, Stephane
Charbonneau, David
Cosentino, Rosario
Dressing, Courtney D.
Figueira, Pedro
Fiorenzano, Aldo F. M.
Gettel, Sara
Harutyunyan, Avet
Horne, Keith
Lopez-Morales, Mercedes
Lovis, Christophe
Mayor, Michel
Micela, Giusi
Motalebi, Fatemeh
Nascimbeni, Valerio
Phillips, David F.
Piotto, Giampaolo
Pollacco, Don
Queloz, Didier
Rice, Ken
Sasselov, Dimitar
Sozzetti, Alessandro
Szentgyorgyi, Andrew
Watson, Chris
Source :
Dumusque , X , Bonomo , A S , Haywood , R D , Malavolta , L , Segransan , D , Buchhave , L A , Cameron , A C , Latham , D W , Molinari , E , Pepe , F , Udry , S , Charbonneau , D , Cosentino , R , Dressing , C D , Figueira , P , Fiorenzano , A F M , Gettel , S , Harutyunyan , A , Horne , K , Lopez-Morales , M , Lovis , C , Mayor , M , Micela , G , Motalebi , F , Nascimbeni , V , Phillips , D F , Piotto , G , Pollacco , D , Queloz , D , Rice , K , Sasselov , D , Sozzetti , A , Szentgyorgyi , A & Watson , C 2014 , ' The Kepler-10 planetary system revisited by HARPS-N : a hot rocky world and a solid Neptune-mass planet ' , The Astrophysical Journal , vol. 789 , no. 2 , 154 .
Publication Year :
2014

Abstract

Kepler-10b was the first rocky planet detected by the Kepler satellite and confirmed with radial velocity follow-up observations from Keck-HIRES. The mass of the planet was measured with a precision of around 30%, which was insufficient to constrain models of its internal structure and composition in detail. In addition to Kepler-10b, a second planet transiting the same star with a period of 45 days was statistically validated, but the radial velocities were only good enough to set an upper limit of 20 M ⊕ for the mass of Kepler-10c. To improve the precision on the mass for planet b, the HARPS-N Collaboration decided to observe Kepler-10 intensively with the HARPS-N spectrograph on the Telescopio Nazionale Galileo on La Palma. In total, 148 high-quality radial-velocity measurements were obtained over two observing seasons. These new data allow us to improve the precision of the mass determination for Kepler-10b to 15%. With a mass of 3.33 ± 0.49 M ⊕ and an updated radius of R ⊕, Kepler-10b has a density of 5.8 ± 0.8 g cm–3, very close to the value predicted by models with the same internal structure and composition as the Earth. We were also able to determine a mass for the 45-day period planet Kepler-10c, with an even better precision of 11%. With a mass of 17.2 ± 1.9 M ⊕ and radius of R ⊕, Kepler-10c has a density of 7.1 ± 1.0 g cm–3. Kepler-10c appears to be the first strong evidence of a class of more massive solid planets with longer orbital periods.

Details

Database :
OAIster
Journal :
Dumusque , X , Bonomo , A S , Haywood , R D , Malavolta , L , Segransan , D , Buchhave , L A , Cameron , A C , Latham , D W , Molinari , E , Pepe , F , Udry , S , Charbonneau , D , Cosentino , R , Dressing , C D , Figueira , P , Fiorenzano , A F M , Gettel , S , Harutyunyan , A , Horne , K , Lopez-Morales , M , Lovis , C , Mayor , M , Micela , G , Motalebi , F , Nascimbeni , V , Phillips , D F , Piotto , G , Pollacco , D , Queloz , D , Rice , K , Sasselov , D , Sozzetti , A , Szentgyorgyi , A & Watson , C 2014 , ' The Kepler-10 planetary system revisited by HARPS-N : a hot rocky world and a solid Neptune-mass planet ' , The Astrophysical Journal , vol. 789 , no. 2 , 154 .
Notes :
English
Publication Type :
Electronic Resource
Accession number :
edsoai.on1322664501
Document Type :
Electronic Resource