Browsing by Author "Hara, N."

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  • Detection and characterisation of 54 massive companions with the SOPHIE spectrograph Seven new brown dwarfs and constraints on the brown dwarf desert 

    Kiefer, F.; Hébrard, G.; Sahlmann, J.; Sousa, S. G.; Forveille, T.; Santos, N.; Mayor, M.; Deleuil, M.; Wilson, P. A.; Dalal, S.; Díaz, R. F.; Henry, G. W.; Hagelberg, J.; Hobson, M. J.; Demangeon, O.; Bourrier, V.; Delfosse, X.; Arnold, L.; Astudillo Defru, Nicola; Beuzit, J. L.; Boisse, I.; Bonfils, X.; Borgniet, S.; Bouchy, F.; Courcol, B.; Ehrenreich, D.; Hara, N.; Lagrange, A. M.; Lovis, C.; Montagnier, G.; Moutou, C.; Pepe, F.; Perrier, C.; Rey, J.; Santerne, A.; Ségransan, D.; Udry, S.; Vidal-Madjar, A. (2019-11-05)
    Brown dwarfs (BD) are substellar objects intermediate between planets and stars with masses of ∼13–80 MJ . While isolated BDs are most likely produced by gravitational collapse in molecular clouds down to masses of a few ...

  • Planetary system LHS 1140 revisited with ESPRESSO and TESS 

    Lillo-Box, J.; Figueira, P.; Leleu, A.; Acuña, L.; Faria, J.P.; Hara, N.; Santos, N. C.; Correia, A. C. M; Robutel, P.; Deleuil, M.; Barrado, D.; Sousa, S.; Bonfils, X.; Mousis, O.; Almenara, José Manuel; Astudillo Defru, Nicola; Marcq, E.; Lovis, C.; Pepe, F. (2020-10-15)
    Context. LHS 1140 is an M dwarf known to host two transiting planets at orbital periods of 3.77 and 24.7 days. They were detected with HARPS and Spitzer. The external planet (LHS 1140 b) is a rocky super-Earth that is ...