Now showing items 1-12 of 12

    • A 1.9 Earth radius rocky planet and the discovery of a non-transiting planet in the Kepler-20 system 

      Buchhave, Lars A.; Dressing, Courtney D.; Dumusque, Xavier; Rice, Ken; Vanderburg, Andrew; Mortier, Annelies; Lopez-Morales, Mercedes; Lopez, Eric; Lundkvist, Mia S.; Kjeldsen, Hans; Affer, Laura; Bonomo, Aldo S.; Charbonneau, David; Cameron, Andrew Collier; Cosentino, Rosario; Figueira, Pedro; Fiorenzano, Aldo F. M.; Harutyunyan, Avet; Haywood, Raphaëlle D.; Johnson, John Asher; Latham, David W.; Lovis, Christophe; Malavolta, Luca; Mayor, Michel; Micela, Giusi; Molinari, Emilio; Motalebi, Fatemeh; Nascimbeni, Valerio; Pepe, Francesco; Phillips, David F.; Piotto, Giampaolo; Pollacco, Don; Queloz, Didier; Sasselov, Dimitar; Ségransan, Damien; Sozzetti, Alessandro; Udry, Stéphane; Watson, Chris (2016-11-11) - Journal article
      Kepler-20 is a solar-type star (V = 12.5) hosting a compact system of five transiting planets, all packed within the orbital distance of Mercury in our own Solar System. A transition from rocky to gaseous planets with a ...
    • The chemistry of protoplanetary fragments formed via gravitational instabilities 

      Ilee, J. D.; Forgan, D. H.; Evans, M. G.; Hall, C.; Booth, R.; Clarke, C. J.; Rice, W. K. M.; Boley, A. C.; Caselli, P.; Hartquist, T. W.; Rawlings, J. M. C. (2017-11) - Journal article
      In this paper, we model the chemical evolution of a 0.25 M⊙ protoplanetary disc surrounding a 1 M⊙ star that undergoes fragmentation due to self-gravity. We use smoothed particle hydrodynamics including a radiative transfer ...
    • A comparison of simulated JWST observations derived from equilibrium and non-equilibrium chemistry models of giant exoplanets 

      Blumenthal, Sarah D.; Mandell, Avi M.; Hébrard, Eric; Batalha, Natasha E.; Cubillos, Patricio E.; Rugheimer, Sarah; Wakeford, Hannah R. (2018-01-30) - Journal article
      We aim to see if the difference between equilibrium and disequilibrium chemistry is observable in the atmospheres of transiting planets by the James Webb Space Telescope (JWST). We perform a case study comparing the dayside ...
    • Equlibrium chemistry down to 100 K : impact of silicates and phyllosilicates on carbon/oxygen ration 

      Woitke, Peter; Helling, Christiane; Hunter, G.H.; Millard, J.D.; Turner, G.E.; Worters, M.; Blecic, J.; Stock, J.W. (2018-06) - Journal article
      We have introduced a fast and versatile computer code, GGchem, to determine the chemical composition of gases in thermo-chemical equilibrium down to 100 K, with or without equilibrium condensation. We have reviewed the ...
    • Eyes on K2-3 : a system of three likely sub-Neptunes characterized with HARPS-N and HARPS★ 

      Damasso, M.; Bonomo, A. S.; Astudillo-Defru, N.; Bonfils, X.; Malavolta, L.; Sozzetti, A.; Lopez, E.; Zeng, L.; Haywood, R. D.; Irwin, J. M.; Mortier, A.; Vanderburg, A.; Maldonado, J.; Lanza, A. F.; Affer, L.; Almenara, J.-M.; Benatti, S.; Biazzo, K.; Bignamini, A.; Borsa, F.; Bouchy, F.; Buchhave, L. A.; Cameron, A. C.; Carleo, I.; Charbonneau, D.; Claudi, R.; Cosentino, R.; Covino, E.; Delfosse, X.; Desidera, S.; Di Fabrizio, L.; Dressing, C.; Esposito, M.; Fares, R.; Figueira, P.; Fiorenzano, A. F. M.; Forveille, T.; Giacobbe, P.; González-Álvarez, E.; Gratton, R.; Harutyunyan, A.; Johnson, J. Asher; Latham, D. W.; Leto, G.; Lopez-Morales, M.; Lovis, C.; Maggio, A.; Mancini, L.; Masiero, S.; Mayor, M.; Micela, G.; Molinari, E.; Motalebi, F.; Murgas, F.; Nascimbeni, V.; Pagano, I.; Pepe, F.; Phillips, D. F.; Piotto, G.; Poretti, E.; Rainer, M.; Rice, K.; Santos, N. C.; Sasselov, D.; Scandariato, G.; Ségransan, D.; Smareglia, R.; Udry, S.; Watson, C.; Wünsche, A. (2018-07) - Journal article
      Context. M-dwarf stars are promising targets for identifying and characterizing potentially habitable planets. K2-3 is a nearby (45 pc), early-type M dwarf hosting three small transiting planets, the outermost of which ...
    • K2-291b : a rocky super-Earth in a 2.2 day orbit 

      Kosiarek, Molly R.; Blunt, Sarah; Lopez-Morales, Mercedes; Crossfield, Ian J. M.; Sinukoff, Evan; Petigura, Erik A.; Gonzales, Erica J.; Poretti, Ennio; Malavolta, Luca; Howard, Andrew W.; Isaacson, Howard; Haywood, Raphaelle D.; Ciardi, David R.; Bristow, Makennah; Cameron, Andrew Collier; Charbonneau, David; Dressing, Courtney D.; Figueird, Pedro; Fulton, Benjamin J.; Hardee, Bronwen J.; Hirsch, Lea A.; Latham, David W.; Mortier, Annelies; Nava, Chantanelle; Schlieder, Joshua E.; Vanderburg, Andrew; Weiss, Lauren; Bonomo, Aldo S.; Bouchy, Francois; Buchhave, Lars A.; Coffinet, Adrien; Damasso, Mario; Dumusque, Xavier; Lovis, Christophe; Mayor, Michel; Micela, Giusi; Molinari, Emilio; Pepe, Francesco; Phillips, David; Piotto, Giampaolo; Rice, Ken; Sasselov, Dimitar; Segransan, Damien; Sozzetti, Alessandro; Udry, Stephane; Watson, Chris (2019-02-13) - Journal article
      K2-291 is a solar-type star with a radius of R-* = 0.899 +/- 0.034 R-circle dot and mass of M-* = 0.934 +/- 0.038 M-circle dot. From the K2 C13 data, we found one super-Earth planet (R-p = 1.589(-0.072)(+0.095)R(circle ...
    • The Kepler-19 system : a thick-envelope super-Earth with two Neptune-mass companions characterized using radial velocities and transit timing variations 

      Malavolta, Luca; Borsato, Luca; Granata, Valentina; Piotto, Giampaolo; Lopez, Eric; Vanderburg, Andrew; Figueira, Pedro; Mortier, Annelies; Nascimbeni, Valerio; Affer, Laura; Bonomo, Aldo S.; Bouchy, Francois; Buchhave, Lars A.; Charbonneau, David; Collier Cameron, Andrew; Cosentino, Rosario; Dressing, Courtney D.; Dumusque, Xavier; Fiorenzano, Aldo F. M.; Harutyunyan, Avet; Haywood, Raphaëlle D.; Johnson, John Asher; Latham, David W.; Lopez-Morales, Mercedes; Lovis, Christophe; Mayor, Michel; Micela, Giusi; Molinari, Emilio; Motalebi, Fatemeh; Pepe, Francesco; Phillips, David F.; Pollacco, Don; Queloz, Didier; Rice, Ken; Sasselov, Dimitar; Ségransan, Damien; Sozzetti, Alessandro; Udry, Stéphane; Watson, Chris (2017-04-24) - Journal article
      We report a detailed characterization of the Kepler-19 system. This star was previously known to host a transiting planet with a period of 9.29 days, a radius of 2.2 R⊕ and an upper limit on the mass of 20 M⊕. The presence ...
    • The mass of Kepler-93b and the composition of terrestrial planets 

      Dressing, Courtney D.; Charbonneau, David; Dumusque, Xavier; Gettel, Sara; Pepe, Francesco; Cameron, Andrew Collier; Latham, David W.; Molinari, Emilio; Udry, Stephane; Affer, Laura; Bonomo, Aldo S.; Buchhave, Lars A.; Cosentino, Rosario; Figueira, Pedro; Fiorenzano, Aldo F. M.; Harutyunyan, Avet; Haywood, Raphaelle D.; Johnson, John Asher; Lopez-Morales, Mercedes; Lovis, Christophe; Malavolta, Luca; Mayor, Michel; Micela, Giusi; Motalebi, Fatemeh; Nascimbeni, Valerio; Phillips, David F.; Piotto, Giampaolo; Pollacco, Don; Queloz, Didier; Rice, Ken; Sasselov, Dimitar; Segransan, Damien; Sozzetti, Alessandro; Szentgyorgyi, Andrew; Watson, Chris (2015-02-20) - Journal article
      Kepler-93b is a 1.478 ± 0.019 R ⊕ planet with a 4.7 day period around a bright (V = 10.2), astroseismically characterized host star with a mass of 0.911 ± 0.033 M ☉ and a radius of 0.919 ± 0.011 R ☉. Based on 86 radial ...
    • Masses and radii for the three super-Earths orbiting GJ 9827, and implications for the composition of small exoplanets 

      Rice, K.; Malavolta, L.; Mayo, A.; Mortier, A.; Buchhave, L. A.; Affer, L.; Vanderburg, A.; Lopez-Morales, M.; Poretti, E.; Zeng, L.; Cameron, A. C.; Damasso, M.; Coffinet, A.; Latham, D. W.; Bonomo, A. S.; Bouchy, F.; Charbonneau, D.; Dumusque, X.; Figueira, P.; Martinez Fiorenzano, A. F.; Haywood, R. D.; Johnson, J. Asher; Lopez, E.; Lovis, C.; Mayor, M.; Micela, G.; Molinari, E.; Nascimbeni, V.; Nava, C.; Pepe, F.; Phillips, D. F.; Piotto, G.; Sasselov, D.; Ségransan, D.; Sozzetti, A.; Udry, S.; Watson, C. (2019-04-11) - Journal article
      Super-Earths belong to a class of planet not found in the Solar system, but which appear common in the Galaxy. Given that some super-Earths are rocky, while others retain substantial atmospheres, their study can provide ...
    • Precise masses in the WASP-47 system 

      Vanderburg, Andrew; Becker, Juliette C.; Buchhave, Lars A.; Mortier, Annelies; Lopez, Eric; Malavolta, Luca; Haywood, Raphaëlle D.; Latham, David W.; Charbonneau, David; López-Morales, Mercedes; Adams, Fred C.; Bonomo, Aldo Stefano; Bouchy, François; Collier Cameron, Andrew; Cosentino, Rosario; Di Fabrizio, Luca; Dumusque, Xavier; Fiorenzano, Aldo; Harutyunyan, Avet; Johnson, John Asher; Lorenzi, Vania; Lovis, Christophe; Mayor, Michel; Micela, Giusi; Molinari, Emilio; Pedani, Marco; Pepe, Francesco; Piotto, Giampaolo; Phillips, David; Rice, Ken; Sasselov, Dimitar; Ségransan, Damien; Sozzetti, Alessandro; Udry, Stéphane; Watson, Chris (2017-11-17) - Journal article
      We present precise radial velocity observations of WASP-47, a star known to host a hot Jupiter, a distant Jovian companion, and, uniquely, two additional transiting planets in short-period orbits: a super-Earth in a ≈19 ...
    • So close, so different : characterization of the K2-36 planetary system with HARPS-N 

      Damasso, M.; Zeng, L.; Malavolta, L.; Mayo, A.; Sozzetti, A.; Mortier, A.; Buchhave, L. A.; Vanderburg, A.; Lopez-Morales, M.; Bonomo, A. S.; Cameron, A. C.; Coffinet, A.; Figueira, P.; Latham, D. W.; Mayor, M.; Molinari, E.; Pepe, F.; Phillips, D. F.; Poretti, E.; Rice, K.; Udry, S.; Watson, C. A. (2019-04-08) - Journal article
      Context. K2-36 is a K dwarf orbited by two small (Rb = 1.43 ± 0.08 R⊕ and Rc = 3.2 ± 0.3 R⊕), close-in (ab = 0.022 AU and ac = 0.054 AU) transiting planets discovered by the Kepler/K2 space observatory. They are representatives ...
    • An ultra-short period rocky super-Earth with a secondary eclipse and a Neptune-like companion around K2-141 

      Malavolta, Luca; Mayo, Andrew W.; Louden, Tom; Rajpaul, Vinesh M.; Bonomo, Aldo S.; Buchhave, Lars A.; Kreidberg, Laura; Kristiansen, Martti H.; Lopez-Morales, Mercedes; Mortier, Annelies; Vanderburg, Andrew; Coffinet, Adrien; Ehrenreich, David; Lovis, Christophe; Bouchy, Francois; Charbonneau, David; Ciardi, David R.; Collier Cameron, Andrew; Cosentino, Rosario; Crossfield, Ian J. M.; Damasso, Mario; Dressing, Courtney D.; Dumusque, Xavier; Everett, Mark E.; Figueira, Pedro; Fiorenzano, Aldo F. M.; Gonzales, Erica J.; Haywood, Raphaëlle D.; Harutyunyan, Avet; Hirsch, Lea; Howell, Steve B.; Johnson, John Asher; Latham, David W.; Lopez, Eric; Mayor, Michel; Micela, Giusi; Molinari, Emilio; Nascimbeni, Valerio; Pepe, Francesco; Phillips, David F.; Piotto, Giampaolo; Rice, Ken; Sasselov, Dimitar; Ségransan, Damien; Sozzetti, Alessandro; Udry, Stéphane; Watson, Chris (2018-02-09) - Journal article
      Ultra-short period (USP) planets are a class of low mass planets with periods shorter than one day. Their origin is still unknown, with photo-evaporation of mini-Neptunes and in-situ formation being the most credited ...